FINAL REPORT 

NASA Grant NGR 21-001-001 

November 1, 1968-February 28, 1983 

Prepared by 

Paul D. Feldman, Principal Investigator 

Department of Physics 

The Johns Hopkins University 

Baltimore, Maryland 21218 

December 15, 1983 
TABLE OF CONTENTS 

Final Report 

Sounding Rocket Launches 

Graduate Degrees Awarded 

Summary Bib li o g r aphy 

- IUE BTbliography 

Instrumentation Development 

Faculty and Post-doctoral Research 

Associates supported by grant 

NGR 21-001-001 

1 

Appendix A 

Appendix B 

Appendix C 

Appendix D 

Appendix E 

Appendix F 
-1- 

FINAL REPORT 

This is the final report for NASA Grant NGR 21-001-001 and 

covers the period from November 1, 1968 to February 28, 1983. 

William G. Fastie was Principal Investigator until September 1981, 

when Paul Do Feldman took over that responsibility. This grant 

was a continuation of a program in rocket and laboratory studies 

of ultraviolet astronomy and aeronomy which was supported by NASA 

grant NsG 193-62 from August 1, 1961 to September 30, 1968, with 

Go H. Dieke as P. I. until his death in the summer of 1965 when 

William G. Fastie assumed principal investigator responsibilities. 

As of March 1, 1983, this program is continuing under grant 

NAG5-619 

During the period of the grant, semi-annual status reports have 

been subm5tted detailing the scientific achievements and current 

objectives of each six-month period, These will not be repeated here; 

instead a compilation of data extracted from these reports is attached 

in the form af several appendices. 

sounding rocket launches performed under NASA sponsorship (Appendix A), 

a list of Ph.D. and MA. degrees awarded to students who worked in 

these programs (Appendix B), and a summary bibliography of all 

These include a list of all 

publications through 1983 (Appendix C) e 

The rocket program also spawned a number of related NASA programs 

at Johns Hopkins University including the Apollo 17 Ultraviolet 

Spectrometer Experiment (W. G. Fastie, P.I.) and observing programs 

using the Copernicus and E satellite observatories. The most recent 

b 
*I -2- 

project to develop from the sounding rocket program is the Hopkins 

Ultraviolet Telescope (A. F. Davidsen, P. I.) which is part of the 

ASTRO astronomy payload to be flown on Space Shuttle in 1986, 

list of the publications from the E program, which has had a 

'significant impact on planetary astronomy, is included in Appendix D. 

A 

A summary of instrument development supported by the Johns Hopkins 

sounding rocket program was prepared by W. G. Fastie in 1979 and 

is reproduced in Appendix E. 

and post-doctoral research associates whose work was supported by 

this grant. 

Appendix F is a list of faculty 

A separate financial statement is being forwarded by the 

Office of Accounting Services of The Johns Hopkins University. 
1 

”i 

APPENDIX A 

SUMMARY OF ROCKET LAUNCHES 

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- APPENDIX A3 - 

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APPENDIX B 

GRADUATE DEGREES AWARDED 
- APPENDIX B1 - 

THE JOHNS HOPKINS UNIVERSITY 

DEPARTMENT OF PHYSICS 

HOMEWOO0 UMWS 

BALTIMORE, MARYLAND 21218 

STUDENTS TRAINED IN GRADUATE SPACE SCIENCE PROGRAMS 

1969 -19 82 

RODNEY C. ANDERSON 

EDWARD J. BEITING, 111 

WILLIAM H. BRUNE 

JAY L. BUCKLEY 

JOHN T. CLARKE 

PATRICIA DAVEY 

Ph.D. 1979 

Dissertation: "Interstellar Matter and Extragalactic 

Present Address: Hughes Aircraft Co., Culver City, 

Light " 

CA 

Ph.D. 1978 

Dissertation: 

Last Known Address: 

"Laboratory and Auroral Studies of 

Molecular Nitrogen" 

Physics Dept., Mississippi State 

University, Mississippi State , MS 

Ph.D. 1978 

Dissertation: "Ultraviolet Observations of Hot Stars 

and Diffuse Nighttime Line Emissions" 

Present Address: Eng, Sci. Lab., Harvard University, 

Cambridge, MA 

Ph.D. 1970 

Dissertation: "Observation and Interpretation of Far 

Ultraviolet Emissions in the Late 

Evening Twilight" 

Present Address: General Electric Company, Space 

Division, Valley Forge Space Ctr,, 

Philadelphia, PA 

Ph.D. 1980 

Dissertation: "Far Ultraviolet Spectral and Spatial 

Present Address: Space Astrophysics Group, Space 

Sciences Laboratory, University 

of California, Berkeley, CA 

Imaging of Jupiter and Saturn" 

MA 1979 

Master's Essay: 

Present Address: Computer Science Corporation, 

"The Production of CO in Comet West 

(1979 VI)" 

Silver Spring, MD 
ROBERT J. DAVIDSON 

THOMAS G. FINN 

JOHN W. GILES, JR. 

- APPENDIX B2 - 

MA 1979 

Master's Essay: 

Present Address: Hewlett-Packard, Boise, Idaho 

"Measurement of the X-ray Flux 

of sco x-1" 

Ph.D. 1973 

Dissertation: "Electron Impact Excitation of Nitrogen: 

Absolute Cross Sections for the LymanBirge-Hopfield System and Elastic 

Scattering; and a High Energy-Resolution 

Investigation of the Second Positive 

Sys tem" 

Present Address: Naval Research Laboratory, 

Washington, DC 

Ph.D. 1974 

Dissertation: 

Present Address: 

"The Far Ultraviolet Spectrum of 

Jupiter" 

The Johns Hopkins University 

Applied Physics Laboratory 

Laurel, MD 

GEORGE F. HARTIG, JR. Ph.D. 1978 

Dissertation: "The Faint Object Telescope: A First 

Look at the Far Ultraviolet Spectra 

of Extragalactic Sources" 

Present Address: AURA, C.T.I.O., Chile 

ROBERT D. KOEHLER 

ROBERT L. LUCKE 

DAVID MANDELBAUM 

MA 1981 

Master's Essay: 

Thermosphere'' 

Present Address: Computer Science Corporation, 

"Excited Oxygen Ions in the 

Silver Spring, MD 

Ph.D. 1975 

Dissertation: "The far Ultraviolet Albedo of the 

Present Address: Naval Research Laboratory, 

Moon" 

Washington, DC 

+ Ph.D. 1974 

Dissertation: 

Electron Impact Excitation" 

Present Address: Departamento de Fisica 

"Infrared Emission Spectra of N2 by 

Universidad Simon Bolivar 

Apartado Postal f5354 

Caracas 108, Venezuela 

WILLIAM E. McCLINTOCK Ph.D. 1976 

Dissertation: 

Present Address: 

"Chromospheres of K-Type Stars and 

Local Interstellar Matter" 

Laboratory for Atmospheric and 

Space Physics, University of 

Colorado, Boulder, CO 
- APPDENIX B3 - 

;: 

... I 

WAYNE McKINNEY 

CHET B. OPAL 

HONGWOO PARK 

RUSSELL PARKS 

GARY ROTTMAN 

ROBERT L. SCHAF 

Ph.D, 1974 

Dissertation: 

Present Address: Bausch and Lomb, Rochester, NY 

"The Far Ultraviolet Spectrum of 

Arc turus " 

Ph.D. 1969 

Dissertation: "Measurements of Nighttime 02 Densities 

in the Upper Atmosphere from Farultraviolet Absorption" 

Washington, DC 

Present Address: Naval Research Laboratory, 

Ph.D, 1977 

Dissertation: 

Present Address: 

"A Rocket Study of Vacuum Ultraviolet 

Auroral Emis s ions I' 

Systems and Applied Science Corp., 

Riverdale, MD 

MA 1979 

Master*s Essay: "The Application of Bit Slice 

Microprocessors to High Performance 

Ultraviolet Detector Systems" 

Last Known Address: Advanced Micro Devices, San Jose, CA 

Ph,D 1972 

Dissertation: 

Present Address: 

"The Far Ultraviolet Spectrum of Venus" 

Laboratory for Atmospheric and 

Space Physics, Univers'ity of 

Colorado, Boulder, CO 

MA 1979 

Master's Essay: 

Present Address: 

"An Instrument for the Design of 

Optical Systems 

Johnson Space Center, Houston, TX 

GULAMABAS G. SIVJEE Ph.D. 1970 

Dissertation: 

Present Address: NSF , Washington , DC (Temporary) 

"Spectro-photometry of the Night Airglow 

and the Aurorae" 

University of Alaska, Fairbanks , Alaska 

WILLIAM SNYDER 

JAMES SWANDIC 

Ph.D. 1982 

Dissertation: 

Present Address: Naval Research Laboratory, 

"X-ray Variability of BL Lacertae 

Ob j ects" 

Washington DC 

Ph.D, 1998 

Dissertation: 

No Known Address 

"Some Problems in Time-Dependent and 

Nonlinear Particle Transport Theory'' 
- APPENDIX B4 - 

PETER Z. TAKACS Ph.D. 1974 

Dissertation: 

Present Address: TRW, Los Angeles, CA 

"Far Ultraviolet Atomic and Molecular 

Nitrogen Emissions in the Day Airglow" 

ROBERT C. VITZ Ph.D. 1977 

Dissertation: "A Rocket Observation of the Far 

Ultraviolet (1160-1700 1) Emission 

Spectrum of Capella" 

Present Address: General Electric Company, Space 

Division, Valley Forge Space, Ctr., 

Philadelphia, PA 

HAROLD A. WEAVER, JR. Ph.D, 1981 

Dissertation: "Ultraviolet Spectra of Comets Observed 

with the International Ultraviolet 

Explorer Satellite Observatory" 

Present Address: NASA Goddard Space Flight Center, 

Greenbelt, MD 

ARTHUR WEINSTEIN Ph.D. 1976 

Dissertation: "A High Sensitivity Sounding Rocket 

Observation of the Far Ultraviolet 

(1160-1700 1) Spectrum of Arcturus" 

Last Known Address: Bell Telephone Labs., Murray Hill, 

NJ 

Ph.D. 1978 

Dissertation: 

Present Address: Harvard College Observatory, 

"Far Ultraviolet Spectrum of Saturn" 

Cambridge, MA 

HEINZ WEISER 

ALBERT J. WILLIAMS I11 Ph.D. 1969 

Dissertation: "High-Resolution Low-Energy Electron 

Scattering from Molecular Nitrogen" 

Last Knm Address: Woods Hole Oceanographic Institute, 

Woods Hole, MA 

JOSEPH R. WOODWORTH Ph.D. 1974 

Dissertation: "Determination of the Spontaneous 

Radiative Transition Rate of the 

23S1 - llSa Transition in Neutral 

Helium" 

Present Address: Sandia Labs., Albuquerque, NM 

9 
- APPENDIX B5 - 

,- 

;* 

STUDENTS TRAINED IN GRADUATE SPACE SCIENCE PROGRAMS 

1983 

RICHAD P. CEBTJLA Ph,D. 1983 

Dissertation: "Morning Twilight Observations of the 

Zodiacal Light and Terrestrial Airglow'' - 

Present Address: Systems & Applied Sciences, Corp., 

Hyattsville, MD 

PETER D. TENNYSON Ph.D. 1983 

Dissertation: "The Diffuse Ultraviolet Background: 

Present Address: 

1700 1-2900 8" 

Department of Physics, The Johns 

Hopkins University, Baltimore, MD 
I 

J 

APPEJTDIX C 

SUMMARY BIBLIOGRAPHY 
- APPEJmIX ClS-Y BIBLIOGRAPW 

(19 6 3- 19 8 3) 

This list contains papers of research done entirely or partially under NASA grants 

NsG 193-62 and NGR 21-001-001 but does not contain papers of related work supported 

entirely by other NASA programs, e,g, Copernicus, Voyager, IUE and Apollo 17, 

E. C. Zipf, Jr,, A Measurement of the Diffusion Coefficient and Radiative 

Lifetime of Nitrogen Molecules in the A 3Z: State, J. Chem. Phys. 38, 2034 

(1963) 

E. C. Zipf, Jr. and Wm. G. Fastie, An Observation of Day Airglow Emission at 

6300 A, J. Geophys. Res. 68, 6208 (1963) e 

Wm. G. Fastie, Instrumentation for Far Ultraviolet Rocket Spectrometry, 

J. Quant. Spectrosc. Radiat. Transfer 2, 507 (1963). 

E 

N2 in the Dayglow, J. Geophys. Res. 69, 2357 (1964) 

C. Zipf, Jr. and W. G. Fastie, Observation of the (0,O) Negative Band of * 

W. G. Fastie, H. M. Crosswhite and D. F. Heath, Rocket Spectrophotometer 

Airglow Measurements in the Far Ultraviolet, J, Geophys. Res. - 69, 4129 (1964). 

W. G. Fastie and H. M. Crosswhite, Far W Dayglow Measurements: Atomic Oxygen, 

Planet. Space Sci. l2, 1021 (1964). 

T. M. Donahue and W. G. Fastie, Observation and Interpretation of Resonance 

Scattering of Lyman a and 01 (1300) in the Upper Atmosphere, in Space Research IV: 

Proceedings of the Fourth International Space Science Symposium, P. Muller, ed., 

North-Holland Pub. Co., Amsterdam, 1964, p. 304. 

R. Isler and W. G. Fastie, An Observation of the Lyman-Birge-Hopfield System in 

an Aurora, J. Geophys. Res. - 70, 2613 (1965). 

R. E. Miller, High Resolution Emission Vegard-Kapfan Bands of Nitrogen, J. Chem. 

Phys. 43, 1695 (1965). 

D. F. Heath and 6. H. Dieke, Vacuum Ultraviolet Instrumentation (High 

Resolution Vacuum Spectrograph) , Jap J. Appl. Phys 4, 455 (1965) 

R, E, Miller, The Absolute Energy of the A 31z State of Nitrogen, J. Mol. Spectry. 

- 19, 185 (1966). 

J, P, Doering and We G. Fastie, Experimental Measurements of the Energy 

Distribution of Secomdary Electrons in an Aurora, Can. J. Phys. 44, 2948 (1966). 

R. E. Miller, A Method for Obtaining Ultrapure Nitrogen, 3. Vac. Sci. and Tech. 

- 3, 227 (1966). 
- APPENDIX c2 - 

i 

"i 

W. G. Fastie, Ultraviolet Measurements in Planetary 

387 (1967). 

Atmospheres, Appl. Opt. 6, 

H. W. Moos and W. G. Fastie, Rocket PIiotometry of the Far W Twilight Airglow, 

J. Geophys. Res. 72, 5165 (1967). 

R. E. Miller, W. G. Fastie and R. C. Isler, Rocket Studies of Far-Ultraviolet 

Radiation in an Aurora, J. Geophys. Res. 73, 3353 (1968). 

T. M. Donahue, T. Parkinson, E. C. Zipf, J. P. Doering, W. G. Fastie and R. E. 

Miller, Excitation of the Auroral Green Line by Dissociative Recombination of 

the Oxygen Molecular Ion: Analysis of Two Rocket Experiments, Planet. Space 

Sci. l6, 737 (1968). 

W. G. Fastie, Far Ultraviolet Day Airglow Studies, Planet. Space Sci. 16, 929 

(1968) 

C. B. Opal, H. W. Moos, W. G. Fastie, M. Bottema and R. C. Henry, The FarUltraviolet Spectral Intensity of a B3 V Star, Astrophys. J. - 153, L179 (1968). 

H. W. Moos, W. G. Fastie and M. Bottema, Rocket Measurement of Ultraviolet 

Spectra of Venus and Jupiter between 1200 1 and 1800 1, Astrophys. J. 155, 

887 (1969). 

C. B. Opal and H. W. Moos, Nighttime Molecular Oxygen Densities in the 100 to 

130 km Region. from Schmann-Runge Absorption, J. Geophys. Res. - 74, 2398 (1969). 

A. J. Willfams, I11 and J. P. Doering, An Experimental Survey of the Low Energy 

Electron Scattering Spectrum of Nitrogen, Planet. Space Sci. 17, 1527 (1969). 

A. J. Williams, I11 and J. P. Doering, Low-Energy Electron-Impact Study of the 

12-14-eV Transitions in Nitrogen, J. Chern. Phys. 5l, 2859 (1969). 

M. Bottema, W. G. Fastie and H. W. Moos, A Rocket Telescope-Spectrometer with 

High Precision Pointing Control, Appl. Opt. 8, 1821 (1969). 

K. A,, Dick and W. G. Fastie, Up-Down Photometers for Auroral Profile Studies, 

Appl. Opt. 8, 2457 (1969). 

W. G. Fastie, Absolute Radiometry in Space Astronomy, in Optical Telescope 

Technology. NASA SP-233, 1970. 

C. B. Opal, H. W. Moos and W. G. Fastie, Far-Ultraviolet Altitude Profiles and 

Molecular Oxygen Densities in an Aurora, J. Geophys. Res. 75, 788 (1970). 

H. W. Moos, R. C, Vitz, J. R. Barry and J. L. Buckley, Small LiF Prism 

Spectrometer for Space Applications, Appl. Opt. 2, 601 (1970). 

T. D. Parkinson, E. C. Zipf and K. A. Dick, An Observation in situ of an 

Auroral Pulsation, J. Geophys. Res. 75, 1334 (1970). 
- APPENDIX c3 - 

K. A. Dick, G. G. Sivjee and H. M. Crosswhite, Aircraft Airglow Intensity 

Measurements: 

J. P, Doering, W. G. Fastie and Po D. Feldman, Photoelectron Excitation of N2 

in the Day Airglow, J. Geophys. Res. - 75, 4787 (1970). 

K. A. Dick, Some Spectrometric Results from the NASA 1968 Airborne Auroral 

Expedition, J. Geophys. Res.’ - 75, 5605 (1970). 

K. A. Dick, Tentative Identification of Several N2 c’ ’G; -+ a ’TIg Bands in 

Auroras, J. Geophys. Res. 75, 5609 (1970). 

Variations in OH and OI(5577), Planet Space Sci. - 18, 887 (1970). 

K. A. Dick, Spectrophotometer Measurements, in Barium Releases at Altitudes 

between 200 and 1000 Kilometers. NASA SP-264, 1971. 

P. D. Feldman, J. P. Doering and J. H. Moore, Rocket Measurement of the 

Secondary Electron Spectrum in an Aurora, J. Geophys. Res. - 76, 1738 (1971). 

J. L. Buckley, H. W. Moos and R. R. Meier, Rocket Twilight Observations of 

H I1216 8 Horizon Brightening near 150 Kilometers, J. Geophys. Res. - 76, 2437 

(1971). 

P. D. Feldman, J. P. Doering and E. C. Zipf, Excitation of O(’S) Atoms in the 

Day Airglow, J. Geophys. Res. - 76, 3087 (1971). 

Re C, Schaeffer, P. D. Feldman and W. G. Fastie, Photodissociative Excitation 

of O(’D) Atoms in the Day Airglow, J. Geophys. Res. 76, 3168 (1971). 

G. J. Rottman, H. W. MOOS, J. R. Barry and R. C. Henry, Lyman-Alpha Emission 

from Arcturus, Astrophys. J. 165, 661 (1971). 

J. L. Buckley, Use of a Tungsten Filament Lamp as a Calibration Standard in 

the Vacuum Ultraviolet, Appl. Opt. 10, 1114 (1971). 

K. A. Dick and G. G. Sivjee, 02 Herzberg I Bands in the Night Airglow: 

Covariation with 01 (5577), J. Geophys. Res. - 76, 6987 (1971). 

H. W. Moos and G. J. Rottman, 01 and HI Emissions from the Upper Atmosphere 

of Venus, Astrophys, J. - 169, L127 (1971). 

J. L. Buckley and H. We Moos, Vacuum Ultraviolet Spectra of the Late Twilight 

Airglow, J. Geophys. Res, - 76, 8378 (1971). 

G. G. Sivjee, K. A. Dick and P. D. Feldman, Temporal Variations in Night-Time 

Hydroxyl Rotational Temperature, Planet, Space Sci, 20, 261 (1972). 

P. Do Feldman, Rocket Measurements of Low Energy Electrons and Optical Emissions 

in the Dayglow and Aurora, Ann. Geophys, - 28, 489 (1972). 

P. D. Feldman, Resonance Scattering of the First Positive System of E92 in the 

Dayglow, Planet. Space Sci. 20, 549 (1972). 
- APPENDIX C4 - 

D. E. Kerr, G. G. Sivjee, W. McKinney, P. Takacs and W. G. Fastie, Brightness 

of Forbidden 01 Lines and Properties of Shadow Bands during the Eclipse of 

7 March 1970, J. Atmos. Terr. Phys. 34, 585 (1972). 

R. C. Schaeffer and W. G. Fastie, Tilting-Filter Measurements in Dayglow 

Rocket Photometry, Appl. Opt. - 11, 2289 (1972). 

H. W. Moos and G. J. Rottman, The Far-Ultraviolet Emission Spectrum of the 

K2 111 Star, Arcturus, Astrophys. J. - 174, L73 91972). 

T. G. Finn, J. F. M. Aarts and J. P. Doering, High Energy-Resolution Studies 

of Electron Impact Optical Excitation Function. I: The Second Positive 

System of N2, J. Chem. Phys. 56, 5632 (1972). 

W. G. Fastie, Exit Slit Mirrors for the Ebert Spectrometer, Appl. Opt. 11, 

1960 (1972). 

R. C. S.chaeffer, P. D. Feldman and E. Zipf, The Dayglow [OI] AX6300 and 5577 

A Lines in the Early Morning Ionosphere, J. Geophys. Res. 77, 6828 (1972). 

R. C. Henry, Ultraviolet Background Radiation, Astrophys. J. - 179, 97 (1973). 

G. J. Rottman, P. D. Feldman and H. W. Moos, Far Ultraviolet Spectra and 

Altitude Profiles of the Dawn Airglow, J. Geophys. Res. _. 78, 258 (1973). 

H. W. Moos and J. R. Woodworth, Observation of the Forbidden z3S1 -+ llSo 

Spontaneous Emission Line from Helium and Measurement of the Transition Rate, 

Phys. Rev. Letters _. 30, 775 (1973). 

P. D. Feldman, Daytime Ion Chemistry of N2, J. Geophys. Res. - 78, 2010 (1973). 

G. J. Rottman, H. W. Moos and C. S. Freer, The Far-Ultraviolet Spectrum of 

Jupiter, Astrophys. J. - 184, L89 (1973). 

G. J. Rottman and H. W. Moos, The Ultraviolet (1200-1900 8) Spectrum of Venus, 

J. Geophys. Res. - 78, 8033 (1973). 

+ 0 

H. W. Mooss Comparison of the Far Ultraviolet Spectra of Venus and Mars, 

J. Geophys. Res. Letters - 79, 685 (1974). 

P. D. Feldman, P. Z. Takacs, W. G. Fastie and B. Donn, Rocket Ultraviolet 

Spectrophotometry of Comet Kohoutek (1973f), Science 185, 705 (1974). 

P. D. Feldman and P. Z. Takacs, Nitric Oxide Gamma and Delta Band Emission at 

Twilight, J. Geophys. Res. Letters - 1, 169 (1974). 
- APPENDIX C5 - 

I 

*I 

! .~ 

W. G. Fastie and D. E. Kerr, Spectroradiometric Calibration Techniques in 

the Far Ultraviolet: 

Molecular Hydrogen, Appl. Opt. - 14, 2133 (1975). 

A Stable Emission Source for the Lyman Bands of 

W. G. Fastie, H. W. Moos, R. C. Henry and P. D. Feldman, Rocket and Spacecraft 

Studies of Ultraviolet Emissions from Astrophysical Targets, Phil. Trans. Roy. 

SOC. Lond. A 2, 391 (11975). 

P. D. Feldman and J,'P. Doering, Auroral Electrons and the Optical Emissions 

of Nitrogen, J. Geophys. Res. _. 80, 2808 (1975). 

J. W. Giles, W. R. McKinney, C. S. Freer and H, We Moos, An Image-Stabilized 

Telescope-Ten Channel Ultraviolet Spectrometer for Sounding Rocket Observations, 

Space Sci. Instrumentation L, 51 (1975). 

P. D. Feldman and P. Z. Takacs, A Search for Molecular Hydrogen Fluorescence. 

near 100 h, J. Atmos. Sci. 32, 2209 (1975). 

P. D. Feldman, P. Z. Tabes, W. G. Fastie and 3. DOM, Rocket Ultraviolet 

Spectrophotometry of Comet Kohoutek (1973f), in Comet Kohoutek, NASA SP355 (1975), P. 109. 

J. R. Woodworth and H. W. Moos, Experimental Determination of the SinglePhoton Transition Rate between the Z3S1 and PISO States of He 1, Phys. Rev. 

A p2, 2455 (1975). 

T. G. Finn and J. P. Doering, Elastic Scattering of 13 to 100 eV Electrons 

From N2, J. Chem. Phys. 63, 4399 (1975). 

R. C. Henry, A. Webstein, P. D. Fefdman, W. 6. Fastie and H. W. Moos, Low 

Resolutbon Ultraviolet Spectroscopy of Several Hot Stars Observed form Apollo 

17, Astrophys. J. 201, 613 (1975). 

P. D. Feldman and P. Z. Takacs, Twilight Observation of the Forbidden 0 

(2P-4S) Transition at 2470 H, J. Geophys. Res. - 81, 260 (1976). 

0 

+ 

P. D. Feldman, Nitric Oxide Gamma Band Emission in an Aurora, Geophys. Res. 

Letters - 3 , 9 (1976). 

R. C. Henry, W. G. Fastbe, Re L. Lucke arid B, W. Hapke, A Far-Ultraviolet 

Photometer for Planetary Surface Analysis, The Moon - 15, 51 (11976). 

i 
- APPENDIX C6 - 

W. R. McKinney, H. W. Moos and J. W. Giles, The Far-Ultraviolet (1180-1950 i) 

Bnission Spectrum of Arcturus, Astrophys. J. 205, 848 (1976). 

R. C. Vitz, H. Weiser, H. W. Moos, A. Weiytein and E. S. Warden, Spectroscopic 

Survey of the Far-Ultraviolet (1160-1700 A) Emissions of Capella, Astrophys. J. 

(Letters) 205, L35 (1976). 

P. D. Feldman, C. B. Opal, R. R. Meier and K. R. Nicolas, Far Ultraviolet 

Excitation Processes in Comets, in The Study of Comets, Part 2, Proceedings 

of IAU COllOqUiUm NO. 25, NASA SP-393, 1976, p. 773. 

T. G. Finn and J. P. Doering, Measurement of the 13 to 100 eV Electron Impact 

Excitation Cross Section for the X1+g + lIIg Transition in N2, J. Chem. Phys. 

- 64, 4490 (1976). 

P, D. Feldman and W. H. Brune, Carbon Production in Comet West (1975x11, 

AstroPhYs- J* (Letters) - 209, L45 (1976). 

D. Mandelbaum and P. 1). Feldman, Electron Impact Excitation of the Meinel 

Band System of N2+, J. Chem. Phys. 65, 672 (1976). 

D. F. Strobel, E. S. Oran and P, D. Feldman, The Aeronomy of Odd Nitrogen in 

the Thermosphere. Twilight Emissions, J. Geophys. Res. - 81, 3745 (1976). 

J. W. Giles, H. W. Moos and W. R. McKinney, The Far Ultraviolet (1200-1900 ;i> 

Spectrum of Jupiter Obtained with a Rocket-Borne Multichannel Spectrometer, 

J. Geophys. Res. 81, 5797 (1976). 

R. C. Henry, W. G. Fastie, R. L. Lucke, B. W. Hapke'and W. R. Hunter, FarUltraviolet Prospecting of the Entire Lunar Regolith, in Lunar Utilization 

Abstracts of Papers Presented at 7th Annual Lunar Science Conference, March 16, 

1976. Lunar 'Science Institute, Houston, 1976, p. 152. 

2. 

R. C. Henry, P. D. Feldman and W. G. Fastie, Apollo 17 Far-Ultraviolet Spectra 

in the Large Magellanic Cloud, Astron. and Astrophys. 53, 317 (1976). 

H. Weiser, R. 6, Vitz, H. W. Moos and A. Weinstein, Sensitive Far W Spectrograph with a Multispectral Element Microchannel Plate Detector for Rocketborne Astronomy, Appl. Opt. IS, 3123 (1976). 

R. Lo Lucke, R. C. Henry and W. G. Fastie, Far-Ultraviolet Albedo of the Moon, 

Astronom. J. 81, 1162 (1976). 

H, Park, P. D. Feldman and W. G. Fastie, The Extreme Ultraviolet (750-1230 1) 

Spectrum of an Aurora, Geophys. Res. Letters 2, 41 (1977). 

D. A. Edmonson, W. K. Peterson, J. P. Doering and P. D. Feldman, High 

Resolution Electron Energy Spectra in an Active Aurora at the Onset of the 

Magnetic Storm of March 26, 1976, Geophys. Res. Letters - 4, 75 (1977). 

R. C. Henry, Far-Ultraviolet Studies. I. Predicted Far-Ultraviolet Interstellar Radiation Field, Astrophys. J. Suppl. - 33, 451 (1977). 
- APPENDIX C7 - 

I 

R. C. Henry, J. R. Swandic, S. D. Shulman and G. Fritz, Zar-Ultraviolet 

Studies. 11. Galactic-Latitude Dependence of the 1530 A Interstellar 

Radiation Field, Astrophys. J. - 212, 707 (1977). 

J. E. Hesser, W. E. McClintock and R. C. Henry, Scanner K-Line Photometry 

of Orion Stars, Astrophys. J. 213, 100 (1977). 

E. J. Beiting I11 and P. D. Feldman, Fabrication and Performance of Intrinsic 

Germanium Photodiodes, Appl. Opt. l6, 800 (1977). 

P. D. Fefdman, The Composition of Comets, her. Scientist - 65, 299 

(1977) 0 

R. C. Henry!, R. Anderson and J. E. Hesser, Metal Abundance in the Praesepe 

and Piyades Clusters, Astrophys. J. - 214, 742 (1977) 

Be bl.Ilaisch, J. L. Linsky, A. Weinstein and R. A Shine, Analysis of the 

Chromospheric Spectrum of 0 I in Arcturus, Astrophys. J. 214, 785 (1977). 

Pi8 Weiser, R. C. Vitz and H. W; Moos, Detection of Ly ci Emission from the 

Saturnian Disk and from the Ring System, Science -’ 197 755 (1977). 

A. F. Davidsen, G. F. Hartig and W. G. Fastie, Ultraviolet Spectrum of QuasiStellar Object 3C 273, Nature 2, 203 (1977). 

A. Weinstein, H. W, Moos and J. L. Linsky, A Sensitive Observation of the 

Far Ultraviolet (1160-1700 1) Spectrum of Arctuns and Implications for its 

Outer Atmosphere, Astrophys, J. - 218, 195 (1977) e 

P. D, Feldman, Ultraviolet Spectroscopy of the Zodiacal Light at 20° 

Elongation, Astron. and Astrophys. 6p, 635 (1977). 

P. %. Takacs and P. D. Feldman, Far Ultraviolet Atomic and Molecular Nitrogen 

Ebafssions in the Dayglow, J. Geophys. Res. -’ 82 5011 (1977). 

W. MClintock and R. C. Henry, High-Resolution Optical Observations of Ca 

I1 I(: in Deneb and Aldebaran, Astsophys. J. - 218, 205 (1977). 

H. W, Moos, W. G. Fastie and A. F. Davidsen, Techniques for Ultraviolet 

Astrophysical Studies from Space Vehicles, in COSPAR: New Instrumatation 

for Space Astronomy, edited by K. Van Der Hucht and G. S. Vaiana (Pergamon 

Press, Oxford and New York, 1978) 

A. F, Davidsen, We G. Fastie and G. F. Hartig, The Faint Object Telescope: 

A Rocket Instrument for Far-Ultraviolet Spectrophotometry of Galaxies and 

Quasars, in COSPBB: New Instrumentation for Space Astronomy, edited by KO 

Van Der Hucht and G. S, Vaiana (Pergamon Press, Oxford and New Pork, 1978). 

E. J. Beiting III and P. D, Feldman, A Search ~OP Nitric Oxide Gamma Band 

Emission in an Aurora, Geophys. Res. Letters 5, 51 (1978). 

W. Benesch, C. C, Jones, E. J. Beiting I11 and P. D. Feldman, High-Resolution 

Electronic Emission Spectrum of Molecular Nitrogen at 15 300 A, Jo Opt. Soc. 

Am. - 68, 432 (1978). 
- APPENDIX 68 - 

E. J. Beiting 111, C. C. Jones and W. Benesch, Energy Levels of Low Lying 

Triplet States of N2 from Infrared Emission Studies, J. Mol. Spectrosc. 70, 

108 (1978). 

C. C. Jones, W. Benesch and E. J. Beiting 111, Analysis of the B' 3Ci -+ B3Ug 

(0,O) Emission Band of Molecular Nitrogen, J. Mol. Spectrosc. 70, 95 (1978). 

H. Weiser and H. W. Moos, A Rocket Observation of the Far-Ultraviolet Spectrum 

of Saturn, Astrophys. J. 222, 365 (1978). 

W. H. Brune, P. D. Feldman, R. C. Anderson, W. G. Fastie and R. C. Henry, 

Midlatitude Oxygen Ultraviolet Nightglow, Geophys Res. Letters 5, 383 (1978). 

P. D. Feldman, Auroral Excitation of Optical Emissions of Atomic and Molecular 

Oxygen, J. Geophys Res. 83, 2511 (1978) e 

R. C. Henry, R. C. Anderson, P. D. Feldman and W. G. Fastie, Far-Ultraviolet 

Studies. 

Astrophys. J. 222, 902 (1978). 

P. D. Feldman, A Model of Carbon Production in a Cometary Coma, Astron. 

Astrophys. 70, 547 (1978). 

111. A Search for Light Scattered at Large Angles by Dust, 

W. H. Brune, P. D. Feldman and G. H. Mount, A Search for Far-Ultraviolet 

Emission from Sirius B, Astrophys. J. - 225, L67 (1978). 

G. H. Mount and H. W. Moos, Photoabsorption Cross Sections of Methane and 

Ethane, 1380-1600 1, At T = 295 K and T = 200 K, Astrophys J. 2, L35 

(1978). 

R. C. Henry, P. D. Feldman, W. G. Fastie and A. Weinstein, Far-Ultraviolet 

Studies. IV. Spectroscopy of North and South Galactic Pole Regions 

Observed from Apollo 17, Astrophys. J. 223, 437 (1978). 

W. H. Brune, G. H. Mount and P. D. Feldman, Vacuum Ultraviolet Spectrophotometry and Effective Temperatures of Hot Stars, Astrophys. J. 227, 

884 (1979). 

E. J. Beiting I11 and P. D, Feldman, Ultraviolet Spectrum of the Aurora 

(2000-2800 A), J. Geophys. Res. - 84, 1287 (1979) . 

C. B. Opal, P. D. Feldman, H. A. Weaver and J. A. McClintock, Two-Dimensional 

Ultraviolet Imagery with a Microchannel-Plate/Resistive-Anode Detector, SPIE 

I_ 172, (Instrumentation in Astronomy III), 317 (1979). 

E. P. Gentieu, P. D. Feldman and R. R. Meier, Spectroscopy of the Extreme 

Ultraviolet Dayglow at 6.5 d Resolution: 

530 and 1240 8, Geophys. Res. Letters 5, 325 (1979). 

R. C. Anderson, W. H. Brune, R. C. Henry, P. D. Feldman and W. G. Fastie, 

Spectrum of the Diffuse Cosmic Ultraviolet Background, Astrophys. J. (Letters) 

- 233, L39 (1979). 

Atomic and Ionic Emissions Between 

i 
- APPENDIX C9 - 

i p. 

I 

i 

I 

6% 

i 

R. C. Andersong W. H. Brune, R. C. Henry, P. D. Feldman and W. G. Fastie, 

Far Ultraviolet Studies. V, Rocket Observations of the Diffuse Cosmic 

Background, Astrophys. J. - 234, 415 (1979) e 

R. R. Meier, D. J. Strickland, P. D. Feldman and E. P. Gentieu, The 

Ultraviolet Dayglow: 

_. 85, 2177 (1980). 

G. I?. Hartig, W. 6. Fastie, A. F. Davidsen, A Rocket Instrument for Far 

Ultraviolet Spectrophotometry of Faint Astronomical Objects, Applied Optics 

- 19 , 729 (1980) 

R. C. Henry and W. McClintock, Ca I1 K Line in Deneb, Astrophys. J. 238, 

220 (1980) 

1, Far W Emissions of N and N2, J. Geophys. Res. 

R. C. Henry, R. C. Anderson and W. G. Fastie, Far Ultraviolet Studies. 

VII. 

J. 2, 859 (1980). 

P, D, Feldman, Ultraviolet Albedo of Comet West (1976 VI), in Solid 

Particles in the Solar System, I. Halliday and B. A. McIntosh (eds.), 

IAU 1980, p. 263. 

The Spectrum of the Local Interstellar Radiation Field, Astrophys. 

R. C. Henry, R. C. Anderson and W. G. Fastie, Far Ultraviolet Studies. 

VIII. Apollo 17 Search for Zodiacal Light, in Solid Paritcles in the 

Solar System, I. Halliday and B. A. McIntosh (eds.), IAU 1980, p. 41. 

D. E. Anderson, Jr., P. D. Feldman, E. P. Gentieu and R. R. Meier, The 

W Dayglow 2, Ly a and Ly f3 Emissions and the H Distributions in the 

Mesosphere and Thermosphere, Geophys. Res. Lett. L, 529 (1980). 

D. E. Anderson, Jr., R. R. Meier, P. D. Feldman and E. P. Gentieu, The 

Lett. L, 1057 (1980). 

A. F. Davidsen, Some Implications of Ultraviolet Observations of Quasars 

and Active Galaxies, in Objects of High Redshift, G. 0. Abell and P. J. E. 

Peebles (eds.) , IAU 1980, p. 235. 

Dayglow 3, 01 Emissions at 989, 1027, 1304, and 1356 b, Geophys. Res. 

J. T. Clarke, H. A. Weaver, P. D. Feldman, He W. MOOS, W. G. Fastie and 

C. B. Opal, Spatial Imaging of Hydrogen Lyman a Emission from Jupiter, 

Astrophys. J. E, 696 (1980). 

H. Warren MOOS, Ultraviolet Emissions from the Upper Atmospheres of the 

Planets, Adv. Space Res. L9 155 COSPAR, 1981. 

A. F, Davidsen, Wm. G. Fastie, P. D. FePdman, G. F. Hartig and G. H. 

Fountain, The Johns Hopkins ultraviolet Telescope for Shuttle Astronomy, 

SPIE - 265, Shuttle Pointing of Electro-Optical Experiments, 375, 1981. 
- APPENDIX C10 - 

P. D. Feldman, D. E. Anderson, Jr., R. R. Meier and E. P. Gentieu, 

The Ultraviolet Dayglow 4. 

Oxygen, J. Geophys. Res. 86, 3583, 1981. 

The Spectrum and Excitation of Singly Ionized 

R. C. Henry, Far-Ultraviolet Diffuse Galactic Light, Astrophys. J. 

(Letters) - 244, L69, 1981. 

R. C. Henry and P. D. Feldman, Lifetime Constraints on Massive Neutrinos 

from Ultraviolet Observations of Clusters of Galaxies, Phys. Rev. Lett. 

- 47, 618, 1981. 

P. D. Feldman, W. H. Brune and R. C. Henry, Possible Detection of FarUltraviolet Line Emission from a Hot Galactic Corona, Astrophys. J. 

(Letters) 249, L51, 1981. 

P. D. Feldman, Ultraviolet Spectroscopy of Comets, in Comets and the Origin 

of Life, C. Ponnamperuma (ed.), D. Reidel, 1981, p. 31. 

E. P. Gentieu, P. D. Feldman, R. W. Eastes and A. B. Christensen, 

Spectroscopy of the Extreme Ultraviolet Dayglow During Active Solar 

Conditions, Geophys. Res. Lett. 8, 1242, 1981. 

R. C. Henry, Ultraviolet Background Radiation and the Search for Decaying 

Neutrinos, in Cosmology and Particles, J. Audouze, P. Crane, T. Gaisser, 

D. Hegyi and J. T. T. Van (eds.), Editions Frontieres, 1981, p. 211. 

P. D. Feldman, Ultraviolet Spectroscopy of Comets Using Sounding Rockets, 

IUE and Spacelab, in Modern Observational Tecliniques for Comets, JPL 

Publication 81-68, 1981, p. 139. 

€to C. Anderson, R. C. Henry and W. G. Fastie, Far Ultraviolet Studies. VI. 

Further Limits on Scattered Galactic Light, Astrophys. J. 259, 573, 1982. 

R. C. Henry, Summary of the Workshop on Far-Ultraviolet Background 

Radiation,- in Tenth- Texas Symposium- on Relative Astrophysics, R. Ramaty 

and F. C, Jones (eds.), Annals of the New York Academy of Sciences, 1982, 

p. 428. 

P. D. Feldman, Ultraviolet Spectroscopy of Comae, in Comets, L. L. Wilkening 

(ed.), University of Arizona Press, 1982, p. 461. 

’ R. R. Meier, R. R. Conway, P. D. Feldman, D. J. Strickland and E. P. Gentieu, 

Analysis of Nitrogen and Oxygen Far Ultraviolet Auroral Emissions, J. Geophys. 

Res. 87, 2444, 1982. 

P. D. Feldman and E. P. Gentieu, The Ultraviolet Spectrum of an Aurora 

530-1520 8, J. Geophys. Res. 87, 2453, 1982. 

R. C. Henry, Cosmic Far-Ultraviolet Background Radiation, in Progress in 

Cosmolopy, A. W. Wolfendale (ed.), 1982, p. 177. 
- APPENDIX C11 - 

A. B. Christensen, R. W. Eastes, P. Do Feldman and E. P. Gentieu, High 

Resolution Dayglow 0 I 

J. Geophys. Res, 89, 6317, 1982. 

R. P. Cebula and P. De Feldman, Ultraviolet Spectroscopy of the Zodiacal 

Light, Astrophys. J. - 263, 987, 1982. 

P. D. Feldman, Ultraviolet Spectroscopy and the Composition of Cometary Ice, 

Science, 28, 347, 1983. 

S. T. Durrance, P. D. Feldman and H. A. Weaver, Rocket Detection of 

Ultraviolet Emissions from Neutral Oxygen and Sulfur in the Io Torus, 

Astrophys. J. (Letters) 267, L125, 1983. 

E. P. Gentieu, P. Do Feldman, R. W. Eastes, A. Bo Christensen, EW Airglow 

During Active Solar Conditions 11: 

to J. Geophys. Res. 1983. 

(1304 8) and 0 I (989 A) Rocket Observations, 

Emission between 530 and 930 1, submitted 

R. Po Cebula and P. I). Feldman, Rocket Observations of the Ultraviolet 

Airglow During Morning Twilight, submitted to J. Geophys, Res. 1983. 
1 

i 

J 

i 

'i 

1 

L 

1 

APPENDIX D 

- ITJE BIBLIOGRAPHY 
- APPENDIX D1 - 

IUE BIBLIOGRAPHY 

3 

i 

f 

1 

i 

2i 

i 

*J 

1. P. D. Feldman, He We Moos, J. T. Clarke, and A. L. Lane, Identification 

of the W Nightglow from Venus, Nature, 279, 221 - (1979). 

2. H. W. Moos and Jo T. Clarke, Detection of Acetylene in the Saturnian 

Atmosphere Using the IUE Satellite, Ap.J. (Letters), - 229, L107, (1979). 

3. J. To Clarke, H. A. Weaver, P. Do Feldman, H. W. Moos, W. G. Fastie, 

and C. Be Opal, Spatial Imaging of Hydrogen Lyman-a Emission from 

Jupiter, Ap. J. - 240, 696 (1980). 

4. J. T. Clarke, H. W. Moos, S. K. Atreya and A. L. Lane, Observations 

from Earth Orbit and Variability of the Polar Aurora on Jupiter, 

Ap.J. (Letters) - 241, L179 (1980). 

5. Po D. Feldman, H. A. Weaver, M. C. Festou, Me F. A'Hearn, W. M. Jackson, 

Be Donn, J. Rahe, A. M. Smith and P. Benvenuti, NE Observations of the 

Ultraviolet Spectrum of Comet Bradfield, Nature 286, 132 (1980). 

6. Me F. A'Hearn and P. D. Feldman, Carbon in Comet Bradfield 197911 

- 

Ap.J. (Letters) - 242, L187 (1980). 

Planets, Adv. Space. Res., - 1, 155 (1981). 

7. H. We Moos, Ultraviolet Emissions from the Upper Atmospheres of the 

8. J. T. Clarke, H; W. Moos, S. K. Atreya and A. L. Lane, IUE Detection 

of H Lya Emission from Saturn, Nature 290, - 226 (1981). 

9. He W. Moos and J. T. Clarke, IUE Observations of the Io Torus from 

Earth Orbit Using the IUE Observatory, Ap.J. - 247, 354 (1981). 

10. J. T. Clarke, H. W. Moos, and P. D. Feldman, IUE Monitoring of the 

Spatial Distribution of the H Lya Emission from Jupiter, Ap.J. 

(Letters) - 245, L127 (1981). 

11. H. A. Weaver, P. D. Feldman, M. C. Festou and M. F. A'Hearn, Water 

Production Models for Comet Bradfield (1979X), ApoJo, - 251, 809 (1981). 

12. M. C. Festou and P. De Feldman, The Forbidden Oxygen Lines in Comets, 

Astron. & Ape, - 103, 154 (1981). 

13. H. A. Weaver, P. D. Feldman, M. C. Festou, M. F. A'Hearn and HI U. Keller, 

IUE Observations of Faint Comets, Icarus, - 47, 449 (1981). 

14. P. De Feldman, Ultraviolet Spectroscopy of Comets Using Sounding 

Rockets, IUE and Spacelab. Proceedings of Workshop on Modern Observational Techniques for Comets, JPL Publication 81-68, p.139, (1981). 

1 
- APPENDIX D2 - 

15. P. D. Feldman, Ultraviolet Spectroscopy of Comets, in Comets and the 

Origin of Life, ed. C. Ponnamperuma, Reidel, Dordrecht, 1981, p. 31. 

16. T. R. Ayres, J. L. Linsky and H. W. Moos, Far-ultraviolet Fluorescence 

of Carbon Monoxide in the Red Giant Arcturus, Ap.J. (Letters) - 148, 

L137 (1981). 

17 

18. 

19. 

20. 

21 

22. 

23 

24 

25 e 

26 

27 

28 * 

T. R. Ayres, J. L. Linsky, H. W. Moos, G. S. Basri, W. Landsman, 

R. C. Henry and R. E. Stencel, Outer Atmospheres of Cool Stars. XII. 

High-dispersion IUE Spectra of Five Latge-type Dwarfs and Giants, 

Ap.J.9 256, 550 (1982). 

P. D. Feldman, Ultraviolet Spectroscopy of Comae, in Comets, ed. 

L. L. Wilkening, University of Arizona Press, 1982, p. 461. 

W. M. Jackson, J. Halpern, P. D. Feldman, and J. Rahe, Production of 

CS and S in Comet Bradfield (1979X), Astron. & Ap., '107, - 385 (1982). 

M. C. Festou, P. D. Feldman and H. A. Weaver The Ultraviolet Bands 

of the co2+ Ion in Comets, A~.J., - 256, 331 (i982). 

J. T. Clarke, H. W. Moos and P. D. Feldman, The Far Ultraviolet Spectra 

and Geometric Albedos of Jupiter and Saturn, Ap.J., - 255, 806 (1982). 

S. T. Durrance, P. D. Feldman and H. W. Moos, The Spectrum of the 

Jovian Aurora 1150-1700 A, Geophys. Res. Letters, - 9, 652 (1982). 

S. T. Durrance and H. W. Moos, Intense Lya Emission from Uranus, 

Nature, - 299, 428 (1982). 

P e D. Feldman, Ultraviolet Spectroscopy and the Composition of 

Cometary Ice, Science, I 219, 347 (1983). . 

T. E. Skinner, S. T. Durrance, P. D. Feldman, and H. W. Moos, Temporal 

Variation of the Jovian HI Lyman-Alpha Emission (1979-1982), Ap.J. Letters 

- 256, 123 (1983). 

M. F. A'Hearn, P. D. Feldman and D. G. Schleicher, The Discovery of S2 

in Comet IRAS-Araki-Alcock 1983d, to be published in Ap. J. (Letters), 

November 1983. 

P. D. Feldman, MI F. A'Hearn and D. G. Schleicher, M. C. Festou, 

M. K. Wallis, W. M. Burton, D. W. Hughes, H. U. Keller and P. Benvenuti, 

Evolution of the Ultraviolet Coma of Comet Austin (1982g), Astron. & 

Astrophys. in press. 

H. W. Moos, S. T. Durrance, T. E. Skinner, P. D. Feldman, J. L. Bertaux, 

and M. C. Festou, IUE Spectrum of the Io Torus: Identification of the 

5 S2 + 3P2 1 Transition of S 111, to be published in Ap. J. (Letters), 

December i983. 
- APPENDIX D3 - 

29. To E. Skinner, S. T. Durrance, P. D. Feldman and He W. Moos, IUE 

Observations of Longitudinal and Temporal Variations in the Jovian Auroral 

Emission, to be published in Ap.Jo, March 15, 1984. 

30. M. F. A'Hearn, D. G. Schleicher, P. De Feldman, R. L. Millis and 

Do T. Thompson, Comet Bowel1 1980b, submitted to A- J., September 1983. 

31. Pa Do Feldman, M. F. A'Hearn.and R. L. Millis, Temporal and Spatial 

Behavior of the Ultraviolet Emissions of Comet Iras-Araki-Alcock (1983d), 

submitted to Ap. J. (Letters), October 1983. 
J 

'* 3 

1 

APPENDIX E . 

INSTRUMENTATION DEVELOPMENT 
- APPENDIX El - 

i 

A Summary of Space Instrumentation 

Developments in Optics and Spectroscopy 

at The Johns Hopkins University 

Prepared by 

William G. Fastie 

Department of Physics 

The Johns Hopkins University 

March 1979 

I. Introduction 

ai 

During the past two decades a program of space science research 

in the field of Optics and Ultraviolet Spectroscopy ha5 been supported 

at JHU almost exclusively by the National Aeronautics and Space 

Administration. This research has covered a broad area including 

the aurora, the day and night time ionosphere, lunar, planetary and 

cometary spectroscopy, solar terrestrial relationships including 

zodiacal light, spectroscopy of stars, extra galactic objects and 

studies of the diffuse galactic background. 

has been to measure spectral emissions from astrophysical targets 

with the highest possible absolute photometric accuracy in the 

spectral region 900 to 3200 A. 

evolution of improved instrumentation -- optical, spectroscopic 

and photometric detecting systems for space research. 

facet of the program is the subject of this report which reviews 

the current status and our future plans with particular emphasis 

on the applicability of these developments to space research in 

the Shuttle era. 

One goal of our program 

Another goal has been the continual 

This latter 
- APPENDIX E2 - 

The responsibility for conducting our future rocket and 

shuttle experiments will be borne by Physics Department faculty 

members currently active in the astrophysics area, who in order 

of seniority are H. Warren Moos, Paul D. Feldman, Richard C. Henry 

and Arthur F. Davidsen. The above will act as principal investigators for the individual experiments. The writer's responsibility 

for these future experiments will be in the area of instrumentation 

particularly the evolution of improved instrumentation in cooperation with the above principal investigators. 

I1 Historical Review 

Our first space age effort began in 1959 under Air Force 

Cambridge Research Laboratory (AFCRL) support. We developed a 

rocket Ebert Scanning UV Spectrometer to study emissions from 

the aurora borealis in the spectral range 1750 to 3500 A. We 

performed one rocket flight under AFCRL support in early 1960 

which successfully observed the first auroral spectrum below 

3000 A. A follow-on program initiated under a NASA grant with 

the late G. H. Dieke, Physics Department Chairman, as principal 

investigator expanded the research effort to include studies of 

day time and night time ionospheric and exospheric emissions. 

During the early years of the NASA support instrumentation irnprovements included an increase in speed of the Ebert spectrometer 

from f/10 to f/5, which today still appears to be its optimum 

speed, and the use of LiF windowed photocathodes which are solar 
- APPENDIX E3 - 

blind to replace sodium salicylate fluorescing films on blue 

sensitive photomultiplier tubes. These tubes had much higher 

photon detection efficiency and in addition very effectively 

reduced sensitivity to scattered near UV and visible radiation. 

They were developed by Electromechanical Research, Inc. under 

the support of Dr. Laurence Dunkelman at Goddard Space Flight 

Center 

A parallel activity.which started in 1962 was the writer's 

consulting work with Jet Propulsion Laboratory which consisted 

of conceptual designs for the Mariner Far UV Ebert Scanning 

Spectrophotometers in cooperation with Dr. Charles Barth who later 

moved to the University of Colorado. 

Our very early daytime ionospheric studies were not understandable in terms of the extant theory. These results led to 

a rocket experiment by John P. Doering, Chemistry Department, JHU, 

to study the very low energy spectrum of ionospheric electrons 

with instrumentation which he had developed to study auroral 

electrons as part of our NASA research. The ionospheric electron 

rocket experiment during which simultaneous spectrophotometric 

observations were made, confirmed the earlier rocket results 

(C. A. Barth had performed one definitive rocket experiment in 

this area) and provided a much more complete understanding of 

ionospheric processes. The early electron studies of the aurora 

and daytime ionosphere by Doering led to his involvement in the 

Atmospheric Explorer Satellite. Doering's experiment on AE has 

produced a plethora of new data and much improved understanding 

of ionospheric physics. 
- APPENDIX E4 - 

The instrumentation for auroral and airglow studies was also 

used in several expeditions aboard NASA's airborne observatory 

(Convair 990) to study solar eclipses, auroral displays under 

constant solar angle and at local noon, and night airglow as a 

function of time and latitude. These studies were conducted in 

the visible and near ultraviolet region. Dr. Kenneth Dick, a 

postdoctoral fellow was responsible for much of this work. 

With the death of G. H. Dieke in the summer of 1965 the writer 

assumed principal investigator responsibilities. In the fall 

of 1965 the apparition of the sun grazing comet Ikeya Seki 

presented a new opportunity. We interfaced the two-mirror 

coronagraphic type telescope which C. A. Barth had developed for 

Mariner planetary flyby instruments with the 1/2 meter f/5 Ebert 

scanning spectrophotometer which had become the work horse of 

our program. 

of a pointing control system which had been developed by the 

Sounding Rocket Division at Goddard Space Flight Center. 

experimental equipment worked fine but scattered solar light 

completely inundated the comet signal. However, the experiment 

alerted us to the potential of pointing systems for astrophysical 

research. It also introduced H. W. Moos into the space program, 

We employed an Aerobee rocket with an early version 

The 

During the next few years Moos developed a 35 cm diameter 

astronomical telescope with a servocontrolled secondary mirror 

to provide sub second of arc pointing stability. This activity 

was enhanced by Murk Bottema who later joined Ball Brothers 

Research Corporation, 

i. 

1 I '3 

x j 

.. 
- APPENDIX E5 - 

Moos's further instrumentation contributions have included 

the introduction of photo-electron pulse counting techniques 

to lower the level of light detection and the use of multiple 

detectors in the focal plane of spectrographs to increase the 

tatal data yeild. This development was in several steps -- 

first the use of a gang of small photomultiplier tubes, each 

with a separate detector and then the use of far W sensitized 

microchannel plates with a resistive strip pulse position 

readout system of the type described by Bowyer, and finally and 

more recently the use of a microchannel plate with a resistive 

plate to provide two-dimensional pulse locating capability, also 

described by Bowyer. The resistive plate development has 

been a joint development with Paul D. Feldman and with Chet Be 

Opal, a former student in our program who is now at the Hulbert 

Center for Space Research of the Naval Research Laboratory. 

Although we anticipate that better two-dimensional systems for 

reading the outp.ut of microchannel plates will soon become available, the resistive plate readout is the only state-of-the-art 

system as of this writing. It should be noted that for some 

applications it can provide much better information than any 

one-dimensional system now available and can have a significant 

role in the near future, 

Moos has used the fine pointing telescope with focal plane 

spectrographs and pulse counting multiple element detector 

systems to study planetary far UT7 emissions (Venus, Jupiter, 

Saturn and Saturn's Rings) and far UV emissions from cool stars, 
- APPENDIX E6 - 

which exhibited much brighter line emissions than anticipated 

and led to a series of observations with the Copernicus Spectrometer/Telescope Satellite in cooperation with R. C. Henry, 

and J. B. Linsky at the Joint Institute for Laboratory 

Astrophysics at Boulder, Colorado. 

In 1975 Moos assumed the additional responsibility under 

Department of Energy support of conducting a laboratory study 

of far W, extreme W and soft x-ray emissions from large plasma 

machines. This new program was expedited by the initial use of 

our space instrumentation but currently feedback from the plasma 

program is providing new techniques for our space program. 

Paul Do Feldman joined our program in 1967. His intial 

interests were aurora and ionospheric emissions. At that time 

we had initiated a joint program with Edward E'. Zipf (a former 

student and post doctoral fellow insour program) and Thomas M. 

Donahue (an earlier JHU Ph.D. in Physics) at the University of 

Pittsburgh. The joint program combined our spectrometric and 

photometric instrumentation with the University of Pittsburgh 

developed mass spectrometers and with Doering's electron 

spectrometers to produce an integrated package to more broadly 

study auroral, ionospheric and exospheric phenomena. The use 

of multiple instruments in the then available rocket systems 

squeezed the Ebert spectrometer to smaller dimensions, at first 

1/4 meter focal length and culminating in a current version which 

is still f/5 but which has a 1/8 meter focal length, weighs 2 

pounds and required 2 watts to operate. This smaller instrument 
- APPENDIX E7 - 

‘5 

1 

1 

I 

I. , 

I 

“I 

i 

2, s 

is inherently less sensitive for observing terrestrial phenomena 

but improved optical and detector system efficiency has maintained 

the requisite sensitivity. A companion development has been to 

build a 1/4 meter focal length scanning concave grating spectrograph based almost entirely on the 1/8 meter hardware. This 

instrument has the great advantage that only one optical element 

is needed (the Ebert system requires three) to study auroral and 

ionospheric emissions in the EW region below 1150 A where lower 

optical reflectivity is achievable than at longer wavelengths. 

Feldman has participated less in instrumentation development 

than in concocting unique combinations of our instruments and 

their subsystems to perform new experiments and in using computer 

techniques to analyse the data and to develop theoretical models 

of atmospheres to compare with the experimental data. For 

example has has used the 1/8 meter spectrograph in the Solrad 

Satellite to monitor the sun in search of solar-terrestrial interactions. He has utilized the scanning concave grating system 

with a single element telescope to measure the absolute brightness of several stars in the spectral range 900 to 1250 A. He 

has adapted a 1/4 meter Ebert and a 1/8 meter Ebert to form a 

bore-sighted two barrel array of telescopes to study the spectra 

of comets Kouhoutek and West, He is currently studying 

cometary coma models from which an optimum observing program can 

be deduced and which will assist in defining cometary UV payloads 

for rocketp shuttle and rendezvous missions to study Eneke, 

Halley and cometary targets of opportunity. 
- APPENDIX E8 - 

R. C. Henry joined the group in 1968. His research 

interests include stellar atmospheres, particularly of cool 

stars, diffuse galactic background, lunar albedo and absolute 

calibration of stars in the far UV. Henry's role has been 

to propose advanced experiments which fall within our measuring 

capabilities rather than instrumentation per se, and to analyse 

the results from such experiments. For example he generated an 

observing program for our Apollo 17 experiment (to be described 

later) and directed the scientific analysis of the results in 

three areas -- the far W lunar albedo, absolute stellar 

calibrations and diffuse galactic background, This analytical 

work led to further rocket studies of stellar brightness and 

the diffuse galactic background. A two year tour of duty at 

NASA headquarters is now complete, and he is continuing experiments 

of the type described above. 

In 1969 our group was given the responsibility for conducting 

a far W spectroscopic experiment on Apollo 17 with the writer 

as principal investigator and with C. A. Barth, G. E. Thomas and 

C. F. Lillie at the University of Colorado and T. M. Donohue, 

The University of Pittsburgh, as co-experimenters. The prime 

purpose of the experiment was to search for a residual lunar 

atmosphere (which was not detected) but there were many other 

facets including a study of interplanetary hydrogen, fluorescence 

of gases discharged from the spacecraft, the lunear albedo, the 

measurement of the absolute spectral brightness of stars, and 

the measurement of the UV spectrum of the diffuse galactic 

background. 
i 

h 

I 

- APPENDIX E9 - 

i 

i 

*I 

3 

';i 

.J 

The instrumentation for the Apollo 17 experiment was 

substantially identical to the 1/2 meter focal length Ebert 

spectrometer developed at the outset of our NASA program except 

the the addition of a reflector system at the exit slit to 

enhance the sensitivity. The Applied Physics Laboratory of the 

Johns Hopkins University took the responsibility for preparing 

the flight hardware and managing the pre-launch program. 

By the late 1960's a need had developed for more precise 

measurement of the absolute brightness of UV and far W spectral 

emissions from astrophysical targets. In the earlier period 

discovery of new emissions, for which precise theory did not 

exist, was the area of emphasis. Accordingly, as part of the 

Apollo 17 program we devised and installed a calibration facility 

in our laboratory which for nearly a decade has permitted our 

laboratory (and several other laboratories which have used the 

facility) to make precision ultraviolet photometric observations 

on space vehicles to the limits which can be achieved in the 

laboratory. The late Donald E. Kerr of the Physics Department 

contributed to the calibration facility by developing a stable UV 

source, In the two year period prior to his death in 1975 Kerr 

also contributed to the space telescope program described below. 

In 1975 Arthur F, Davidsen came aboard, His activity has been 

the study of far UV emissions from extra galactic objects, in 

particular Quasars, For these studies we have developed a very 

advanced spectrometer-telescope rocket system which includes a dual 
- APPENDIX E10 - 

star finding system that can point the telescope to within one 

arc minute of any point in the sky (developed by the Sounding 

Rocket Division, GSFC), a TV camera to present an instantaneous 

picture of the star field to which the telescope is pointing, 

and ground command capability to make fine adjustments of the 

rocket pointing system so that the star field can be quickly 

centered on the desired target to within 5 arc seconds. 

The new telescope system has been flown on two rocket missions 

(both successful), the first flight producing the first far UV 

spectrum of a Quasar (3C 273) from which many very significant 

scientific results have been deduced, 

The success of Davidsen's telescope has inspired the development of a much larger telescope for future rocket and space 

shuttle astrophysical experiments. The new telescope, currently 

in the design phase will have a primary mirror diameter of 90 

cm and will be designed in a modular fashion so that new detecting 

systems, new spectrometers and new TV camera systems can be incorporated in the telescope package as they evolve from our 

ongoing instrumentation studies. 

These developments, along with the development of advanced 

specialized optical devices for studying planets, comets and 

diffuse emissions represent our current concept of our future 

program as outlined in Sec. IV. 

In 1975 George H. Mount accepted a three year appointment as 

a post doctoral fellow to study the W properties of diffraction 

gratings of potential interest to Space Telescope and to the 
- APPENI>IX Ell - 

International Ultraviolet Explorer. His work has resulted in 

a better understanding of grating properties which in turn has 

resulted in much better inflight performance than originally 

anticipated for IUE and will have a similar positive impact on ST, 

Mount also developed and studied the performance properties 

of a flight calibration lamp which is flying on IUE and will,be 

used on ST, The lamp work was performed in cooperation with 

Goddard Space Flight Center and the Westinghouse Corporation. 

Mount also conducted a laboratory study of the absorption 

3 

3 

i properties of gases of interest in the study of planetary 

al 

atmospheres and assisted in a rocket study of the absolute 

brightness in the W of bright stars 

There are several ancillary programs not supported or indirectly supported by NASA which have enhanced our space research 

program. The original Air Force support, consulting support by 

Jet Propulsion Laboratory and Department of Energy support, are 

described above. For a short time in the late 1960's the writer 

was a consultant to Ball Brothers Research Corporation and 

e$ 

contributed the conceptual design of a solar W rocket spectrograph which has been successfully flown several times by Harvard 

College Observatory. 

i 

1 

The writer has also provided consulting 

services to two Air Force Geophysical Research Laboratory 

(formerly AFCRL) experiments, one to study Iuv emissions in the 

ionosphere from a satellite, the other to study UV solar emissions 

from a high altitude balloon. Moos has provided consulting 
- APPENDIX E12 - 

f 

serivces to another Air Force experiment to study soft x-ray 

solar emissions. 

Research Center at the Naval Research Laboratory, notably in 

conducting the Solrad experiment described above. Both 

Henry and Davidsen have also participated in Hulburt Center 

Research in the area of scientific analysis of x-ray data from 

astrophysical targets. All of these extra curricular activities 

have provided extremely valuable feedback to our instrumentation 

program and to our space research studies, 

Feldman has consulted with the Hulburt Space 

Another activity of our astrophysics group, as it is generally 

referred to within the Physics Department, is to provide counsel 

to NASA through general committee work, scientific experiment 

selection committees, science working groups and direct administrative support. For example, the writer has served on committees 

to evaluate and/or select proposed experiments for four solar 

missions, for two interplanetary missions and for Space Lab 11, 

on the initial working group that defined the International 

Ultraviolet Explorer (IUE) which is a stellar telescope/ 

spectrometer system currently operating in geosynchronous orbit, 

was a member of an instrument identification team for the Space 

Telescope and is currently one of the two telescope scientists 

and a member of the science working group for the Space Telescope 

which will be launched in 1983. 

Moos was a rotating member of the International Ultraviolet 

Explorer and is currently a member of the Mission Operations 

Working Group, the top committee which advises the astronomy 

office at NASA headquarters. 
- APPENDIX E13 - 

Feldman has been a member of proposal evaluation teams, a 

member of the AMPS (Atmosphere, Magnetosphere and Plasmas in Space) 

Science Working Group and Definition team and a member of the 

CLIR (Cryogenic Limb-Scanning Interferometer/Radiometer) Definition 

team. 

Henry, as mentioned above was on leave of absence and 

completed a two-year tour of duty at NASA headquarters where he 

served as deputy to the director of the astrophysics division. 

This is the highest level administrative job to which NASA has 

appointed a research astronomer. 

Davidsen has served on a NASA investigative committee which 

made an on-site study of state-of-the-art multiple element 

detectors (one and two dimensional imaging detectors) which might 

be candidate detectors for cameras and spectrometers aboard the Space 

Telescope. The report of the detector committee had a major 

impact on the selection of experimental groups which will provide 

instruments for the Space Telescope. Davidsen is currently 

serving as a co-experimenter on the Faint Object Spectrograph 

team to which he was selected by NASA as a member at large, i.e., 

he was not an original member of any of the scientific instrument 

teams which the detector committee reviewed. Davidsen is also a 

member of the committee that is advising NASA on a permanent space 

x-ray observatory. 

- 

We have recently completed a special study for NASA to define 

the applicability of rocket experimentation for astronomical 

studies to use aboard the shuttle. In our report (NASA 

NAS 5-23695) we identify several aspects of the shuttle 

contract 

interface 
- APPENDIX E14 - 

with such experiments and propose generic solutions. 

particular, we have proposed that all such experiments should 

be carried in a sealed universal container which provides a 

thermal and mechanical interface with the shuttle system. 

The committee work of the astrophysics group has been 

In 

extensive and can therefore be assumed to have been of significance to NASA. The feedback effect has provided the JHU 

astrophysics group with a much broader view of space astrophysics than would otherwise have occured and has therefore had 

a very positive effect on the JHU program. 

In concluding this historical review it is important to 

emphasize that in this research program, as in all others, the 

most important end product is the students (doctoral and post 

doctoral) that support it and emerge from it. Their names, not 

mentioned above are generously - distributed throughout-our 

scientific publications. 

above refer only to the highlights of our published 

It should be understood that the asterisks 

research. 

scientific journal publications. 

note of the following individuals whose names do not appear in 

the scientific publications and who have had a significant input 

The total publications'list totals over a hundred 

We make special 

to the program at the support level. 

Length of Service 

Through 1979 

Mrs, Elsa Clark, executive administrator 10 years 

Mrs, Linda Bihun-Werner, executive administrator 1 

Mr. 

Mr. 

Myron D. Chedester, research engineer 10 

Leo Hruskal research engineer. 3 
- APPENDIX E15 - 

Mr. Milton Nemec, Physics Dept. Shop 

foreman and instrument maker 

Mr. Bernard Lawrence, instrument maker 

Mr. Thomas Shipley, instrument maker 

Mr. Robert Crabbs, instrument designer 

Mr. Robert Richardson, research technician 

Mr. Kenneth Wolfram, research technician 

Mr. Russell Pelton, research technician 

l8 

PO 

7 

2 

3 

3 

l 

111. Current Instrumentation 

I 

i 

i , .r’ , 

In designing our latest instrumentation for rocket research 

we have incorporated modular design in our hardware subsystems 

and have employed space qualified components. This approach 

has provided flexibility, reliability and economy in assembling 

a rocket experiment and the samg advantages will accrue to our 

future shuttle program. 

of subcontractors, all. of whom have broad experience in providing 

components and subsystems for satellite experiments as shown 

This policy is reflected in our choice 

below 

I -/ 

I 

Sub Contractor 

‘P I 

Example of 

Product Satellite Experience 

Spacom Electronics System wiring Mariners 

H,V. Supplies Solrad 

Pulse Counting Units G%u, Satellites 

Servo Systems 

Ground Support Systems 

Electronic Design OGO 

! 
- APPEXDIX E16 - 

Sub Contractor Product 

Research Support Instru- Optical Mechanical 

Optical Mechanical 

Construction 

Field Support 

Laboratory Support 

mentation Design 

Equipment 

Muffolette Optical Co. Precision Optics 

Electromechanical 

Research (EMR) 

Westinghouse Corp. 

Applied Physics 

Lab/JHU 

P.M. Tubes 

Integrated P.M. 

Systems 

S.I.T. Vidicon 

W Calibration Lamps 

. Management Support 

Field Support 

System Design 

Environmental 

Data Analysis 

Testing 

Example of 

Satellite Experience 

Apollo 

Solrad 

GRL Satellites 

A.T.M 

Apollo XVII 

Mariners 

Apollo 

Mar hers 

OGO 

Apollo 

IUE 

Apollo 

Atmospheric 

Explorer 

Transit Satellites 

Explorers 

GEOS 

The best way to define our current space equipment is to 

describe a few of our latest rocket payloads. Because of modular 

design some subsystems are or can be used in several payloads as 

indicated. 
- APPENDIX E17 - 

i 

A. Auroral Package 

For general auroral research: 

1, 

2. 

3. 

4. 

5. 

6. 

% meter focal length Infra red scanning Ebert 

spectrophotometer 

a, No slit illuminator 

b. Cryocentrically cooled Lithium drifted germanium 

detector 

Concave grating EW scanning spectrophotometer 

a. No slit illuminator 

b. Scanning grating (near normal incidence) 

c. Osmium coating to provide sensitivity to 500 A 

d. Windowless PM tube-pulse counting electronics 

Narrow pass band multiple photometer 

a. Interference filters 

b. Wide dynamic range electronics 

c. Selected PM tubes (5 channels) 

d. Tilting interference filters (2 channels) 

Mass spectrometer (provided by E. Zipf, U. of Pittsburgh) 

a. Low level detection 

b. Detects ions and neutrals 

Dual electron spectrometer (J. P. Doering) 

a, 

b. 

Far 

a. 

b. 

Measures secondary electron spectrum to a few 

vo 1 t 1 imi t 

Measures primary electron spectrum of 40 kev 

W scanning Ebert spectrometer 

Measures auroral emissions in range 3100 A to 1100 A 

Employs pulse counting electronics to measure 

intensities 
- APPENDIX E18 - 

B. Comet Research Package 

(This payload has also been used to absolutely calibrate 

bright stars in the spectral range 900 A to 3100 A.) 

1. % Meter focal length (f/5) scanning Ebert spectrophotometer 

a, Employs f/5 off axis parabolic telescope 

(+ meter focal length) to illuminate entrance slit 

b. Photo-electron pulse counting electronics 

c, Covers 1700 to 3100 A range 

2. 1/8 Meter focal length scanning Ebert spectrophotometer 

a. Covers 1200 to 1700 A range 

b, Otherwise same as 1. 

3. % Meter focal length concave grating scanning spectrophotometer 

a. Covers 500 to 1300 A range 

b. Uses off axis parabolic osmium coated slit 

illuminator 

c. Otherwise same as A-2. 

4. BASD (Ball Aerospace Science Division) Startracker 

(provided by GSFC Sounding Rocket Division) 

a. Is boresighted with 1, 2 and 3 

b. Points rocket at target stars or comet 

c. Limited to 4th magnitude or brighter stars 

1 

I 

i Ai 

I 
- APPENDIX El9 - 

C. Fine Pointing Telescope 

I 

I 

*f 

1 

1. Employs BASD star tracker (see B-4)to bring targets 

into FOV of telescope 

2. Dahl-Kirkham 2 mirror optics (35 cm diameter primary, 

f/16 secondary image, 5.6 meter effective focal length). 

Invar structure provides thermal stability of focus 

3. Servo system articulates secondary mirror to provide 

image motion compensation to sub arc second stability; 

part of target light in telescope is used to actuate 

EMR quadrature star sensor system which controls 

secondary mirror position 

Focal plane compatible with most of our scanning 

spectrophotometer subsystems 

4. 

5. Prism spectrometer with microchannel plate detector 

at the focused spectrum provides high throughput 

with simultaneous detection of entire Far W spectrum 

6. Resistive strip pulse locating system reads out 

spectrum presented to 1-1 channel plate 

7. Resistive plate detector gives two dimensional 

read out capability for micro channel plates. This 

detector system is currently used in combination 

with an objective LiF prism to provide a monochroaatie image of Jupiter and its near environs 

at Ly a 
- APPENDIX E20 - 

D. Far W Diffuse Background Experiment 

1. Uses % meter focal length Ebert scanning spectrometer with oversize grating 

2. Uses EMR strip photocathode solar blind PM tube 

to provide very low dark current 

3. Uses very wide entrance slit (low resolution) to 

permit detection of very weak signals 

Needs boresighted BASD tracker or equivalent Pointing 

capability 

4. 

E. Faint Object Telescope 

1. 

2. 

3. 

Uses Dahl-Kirkham two mirrcxoptical system (40 cm 

diameter primary, f/16 secondary images, 5.6'meter 

effective focal length). Invar tower in central 

obscuration zone supports secondary mirror and 

provides thermal stability of focus 

Employs 

stars so that the telescope can be pointed at very 

kint objects. Rate integration gyros are used to 

reduce pointing system jitter. 

Division at GSFC provides the tracker and gyro system. 

The spectrometer entrance slit is ahole in a mirror 

weich directs the stellar field to a SIT Vidicon system 

which provides a real time star field image to the 

experimenter in the block house. The experimenter 

2 BASD star trackers to guide on two bright 

The Sounding Rocket 

i 

I 
- APPENDIX E21 - 

has a quick response "joy stick" to correct the 

rocket pointing from the ground if necessary 

4. A concave grating Rowland type spectrograph is used 

to record the spectrum. A microchannel plate with 

a resistive strip readout system (See C-6) is 

placed on the Rowland circle to provide simultaneous 

readout of each feature of the system 

1 

.. i 
APPENDIX F 

1 

FACULTY AND POST-DOCTORAL RESfiRCH ASSOCIATES 

SUPPORTED BY NASA GRANT NGR 21-001-001 
- APPENDIX F - 

FACULTY AND POST-DOCTORAL RESEARCH ASSOCIATES 

SUPPORTED BY NASA GRANT NGR 21-001-001 

FACULTY : 

Henry Me Crosswhite 

Paul J. Dagdigian 

Arthur F. Davidsen 

John P. Doering 

William G. Fastie 

Paul I). Feldman 

Richard C. Henry 

Donald E. Kerr (deceased) 

H. Warren Moos 

POST DOCTORAL RESEARCH ASSOCIATES: 

.! 

7 

Je F. M. Aarts 

Ronald A. Bell 

Kenneth A. Dick 

Sammuel T. Durrance 

Charles Freer, Jr. 

George F. Hartig, Jr. 

Frederick Herrero 

Joseph A. McClintock 

George He Mount 

Robert C. Schaeffer 

Ear1 Warden 

196 8-19 74 

19 74-19 7 7 

19 75-Present 

19 90-19 79 

19 6 8-P r es ent 

1968-Present 

1969-Present 

1969-1975 

196 8-Present 

19 71-19 72 

1983 

19 66-1969 

19 80-19 82 

1971-1972 

1978-1980 

19 70-19 72 

19 78 

1975-1978 

1970-1972 

19 75-19 77 

"I 

3