HDTenEightyP/NetNews huggingface dataset:
From: Cynedd@cup.portal.com (Kenneth W Durham)
Newsgroups: sci.astro
Subject: Co-ordinate Systems
Date: Mon, 28 Sep 92 17:31:20 PDT
Organization: The Portal System (TM)
Distribution: world

I'm looking for the various coordinate systems used in Astronomical
coordinate calculations; I've noticed Galactic and Super-Galactic coord.
systems, but have yet to come across conversion routines.
Conversion routines that enable one to transfer 'tween the various systems,
as appropriate.

Thanks in advance.
                      Ken Durham
 ____________________________                            _________________
| Facilis descensus Avernii; |______                    |An it Harm None, |
| Noctes atque dies patet atri janua|____            ___|  Do as Ye Will. |
| Ditis; Sed revocate gradum, superaque  |_____     |   |-----------------|
| evadere ad auras, Hoc opus, hic labor est.   |__  |o  |Death is But A   |
|                                   Virgil        |_|___|   DoorWay to    |
|_______________________________________________________|Ultimate Reality.|
| Cynedd@cup.portal.com  | loreli!cynedd@solar.nova.edu |||||||||||||||||||
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
From: omf@tiamat.hacks.arizona.edu (Oscar Fowler)
Newsgroups: sci.astro
Subject: Meteor Showers ...
Date: 6 Oct 92 20:12:47 GMT
Reply-To: omf@tiamat.hacks.arizona.edu
Distribution: world,local
Organization: Sirius Cybernetics Corporation
News-Software: VAX/VMS VNEWS 1.4-a4

Hi all, I apologize if this is the wrong place to post this, but
where can I get information on upcoming meteor showers?  I'm an
absolute neophyte, but very interested in learning by observing...

Thanks! 

#############################################################################

               "If you can't lick'em, put 'em on with a big piece of tape."

Oscar Fowler
omf@hacks.arizona.edu
Xref: sparky sci.astro:10218 sci.bio:3411 sci.chem:3747 sci.geo.fluids:355 sci.math:12392 sci.physics:15619 sci.research:1122 sci.geo.meteorology:3135
From: elliottb@cnsvax.uwec.edu
Newsgroups: sci.astro
Subject: P/SWIFT-TUTTLE Observation
Date: 2 Oct 92 11:46:34 -0600
Organization: University of Wisconsin Eau Claire

CCD IMAGE OF COMET P/SWIFT-TUTTLE ON SEPT 29 CDT SHOWED A COMA 3 ARC MIN
IN DIAMETER OFFSET FROM THE NUCLEUS TOWARD THE NORTH. THE COMET WAS 26 
DEGREES ABOVE THE HORIZON FROM OUR LATITUDE OF 45 DEGREES NORTH LONGITUDE
91.5 WEST.  THE EXPOSURE WAS 95 SECONDS WITH A 24 INCH F/5 REFLECTOR.
From: ronnie@cisco.com (Ronnie B. Kon)
Newsgroups: sci.astro
Subject: Re: Help.Analemma question???
Date: 1 Oct 1992 02:44:13 GMT
Organization: cisco Systems, Incorporated
Distribution: world
NNTP-Posting-Host: lager.cisco.com

In article <1992Sep29.124748.244252@ns1.cc.lehigh.edu>, f004@ns1.cc.lehigh.edu writes:
|> I am looking for the answer to a basic question regarding the analemma.
|> If you look at a picture of the analemma you notice that the top part of
|> the figure eight is smaller than the bottom part. This top part represents
|> when the sun reaches its highest point in this part of the sky during the
|> summertime. However, summertime is the longest season lasting 94 days. Why
|> isn't this shown in the analemma as a larger part of the figure eight??
|> Please try to keep explanation basic (I am probably overlooking something,
|> anyhow) this is for high school astronomy students.
|> Thanks... Bill

Well, I don't claim to know anything, but it seems to me that:


This is directly related to Kepler's Law of Planetary Orbits (or
some such title).  It states that planets orbit in elipses, and sweep out
equal areas over any given period of time (which means that when planets
are close to the sun they move faster than when they are far away from
the sun).

The sun is above the equator in the summer, which by coincidence happens
when Earth is about as far away from the Sun as it can get (that is, this
is true for the civilized world--ie., that part north of the equator :-)).
Remember that summer has nothing to do with where Earth is in its orbit, 
only with how the Earth is tilted.

Now think of what is going to make the Sun move in the sky.  It can only
be Earth's movement around the Sun: everything else in constant.  When
Earth is (far from the Sun / moving slowly / seeing the Sun north of
the equator / enjoying summer in the Northern Hemisphere) the Sun will
move very slowly around the analemma.  When the Earth is (close to the
Sun / moving quickly / seeing the Sun south of the equator / enjoying
winter in the Northern Hemisphere) the Sun is moving quickly around the
analemma.

-------------------------------------------------------------------------------
Ronnie B. Kon           | "Boy, they were big on crematoriums, weren't they?"
ronnie@cisco.com        |
(415) 688-4592          |           -- George Bush at Auschwitz, Sept 1989
-------------------------------------------------------------------------------
Newsgroups: sci.astro
From: jeffp@netcom.com (Jeff Papineau)
Subject: Voyager 2.0 for the Mac.
Organization: Netcom - Online Communication Services  (408 241-9760 guest) 
Distribution: usa
Date: Wed, 30 Sep 1992 17:53:17 GMT

Voyager 2.0.....

I was interested in finding this program, but have not seen ads for it,
or have I seen it in MacWarehouse catalog, etc.

could someone please post the publishers name, as well as any reviews
that might have appeared here on the net?

thanks,

Jeff-

Newsgroups: sci.astro
From: frazerp@syma.sussex.ac.uk (Frazer R Pearce)
Subject: Aarseth's N-body Code
Summary: Aarseth's N-body code wanted.
Keywords: Simulation, N-body
Organization: University of Sussex
X-Newsreader: Tin 1.1 PL4
Date: Tue, 6 Oct 1992 13:18:27 GMT

Does anybody have a copy of Aarseth's N-body code (similar to the one in
the back of Binney and Tremaine 'Galactic Dynamics') that they are
prepared to e-mail me ?

Failing that any particle-particle code would be appreciated.

Frazer.

frazerp@uk.ac.sussex.central
From: pasc@sbustd.rz.uni-sb.de (Patrick Schmeer)
Newsgroups: sci.astro
Subject: Outburst of SS Cygni
Date: 5 Oct 92 14:27:59 GMT
Organization: Studenten-Mail, Rechenzentrum Universitaet des Saarlandes

Visual magnitude estimates by
Patrick Schmeer, Saarbruecken-Bischmisheim, Germany:
 
SS CYGNI  (UGSS)
Sep. 27.833 UT,  12.0 ;
Oct.  1.794 UT,   8.7 ;  3.868,   8.7
Instrument: 203-mm Schmidt-Cassegrain telescope
Sequence  : AAVSO
('Sequence' means 'List of comparison star magnitudes')
Xref: sparky sci.astro:10330 sci.bio:3436 sci.chem:3789 sci.geo.fluids:361 sci.math:12590 sci.physics:15772 sci.research:1129 sci.geo.meteorology:3157
From: jac@ds8.scri.fsu.edu (Jim Carr)
Newsgroups: sci.astro,sci.bio,sci.chem,sci.geo.fluids,sci.math,sci.physics,sci.research,sci.geo.meteorology
Subject: Re: Basic research in peril at NSF: Update
Date: 1 Oct 92 20:05:54 GMT
Reply-To: jac@ds8.scri.fsu.edu (Jim Carr)
Followup-To: sci.astro
Distribution: na
Organization: SCRI, Florida State University

In article <1992Sep29.101249.17256@meteor.wisc.edu> stvjas@meteor.wisc.edu (Stephen Jascourt) writes:
>
>**   BASIC  RESEARCH  IN  PERIL  at the  NATIONAL SCIENCE FOUNDATION (NSF)  **
>
>The Director of the National Science Foundation (NSF), Walter Massey, has
>expressed clear intent to redirect the NSF away from its mission in basic
>research toward a new mission to "accept a major role in fostering links
>between research and technology" to foster product development and assist
>industry.   ...

I have also heard a version that says Massey acted to coopt the action 
from Congress (which is clearly moving in this direction) and may 
want to use the committe to deflect congress from this path.  Massey 
also said "The starting point for anything we do must be strengthening 
the research and education enterprise."  

Whichever way he is leaning, cogent arguments can have an effect. 

>A special commission was created to study how to integrate NSF efforts with
>the needs of industry. This "Special Commission on the Future of NSF" has 
>been given only 75 days from its first meeting to come up with a final report.

According to some infomation mailed out by a committee in the Nuclear 
Physics division, this group met 17 September (probably for organization) 
and will meet again on 16 October and 7 November.  The input deadline 
of 15 October is consistent with a guess that they will formulate 
the general content of their report on 16 October and act on the final 
version 3 weeks later.

>WHAT YOU MUST DO:            remember, input deadline is Oct 15

>2) WRITE TO THE COMMITTEE:
>Special Commission on the Future of NSF, Rm. 546
>National Science Foundation                     
>1800 G St., N.W.                               
>Washington, D.C. 20550    fax: (202)-357-7346

They can also be reached via E-mail at 

 nsbcomm@nsf.gov (internet)

or 

 NSBCOMM@NSF.BITNET 

--
J. A. Carr                                    |  "The New Frontier of which I  
jac@gw.scri.fsu.edu                           |  speak is not a set of promises
Florida State University  B-186               |  -- it is a set of challenges."
Supercomputer Computations Research Institute |   John F. Kennedy (15 July 60)
From: newberry@strato.as.arizona.edu (Mike Newberry)
Newsgroups: sci.astro
Subject: Re: Help with CCD buying
Date: 3 Oct 92 00:10:54 GMT
Organization: University of Arizona, Tucson, AZ

In article <1992Sep30.174454.28782@ccu.umanitoba.ca> youngs@ccu.umanitoba.ca (Scott D. Young) writes:
>
>   I highly recommend the ST-6 16-bit CCD from Santa Barbara Intrumnts 
>   Group.  It is an excellent choice for precision work. We have our
>   ST-6 up and running now, and have reached about 20th magnitude with
>   a 40cm scope without trying too hard.  The high digitization rate
>   should allow very precise photometry. Unfortunately, you need IRAF
>   or a similar package to do any aalysis of the 16-bit images.
>      We are doing a characteristic curve now, as well as tests of the
>      dark current and flat field properties, so we should know a bit about the
>      noise haracteristics soon.
>
    Try MIRA from Axiom Research, Inc, Tucson, AZ. Ir does much of what	
    IRAF does but is faster on a 486/33 that IRAF on a Sun Sparcstation.
    Nicer interface, much easier to use.  Supports 16 bit integer and
    32 bit real images in 1-d and 2-d. See ad in Sky and Telescope.	
Newsgroups: sci.astro,sci.geo.meteorology,rec.radio.amateur.misc,rec.radio.shortwave
From: oler@rho.uleth.ca (Cary Oler)
Subject: AURORA WATCH: Low Latitude Auroral Activity Watch
Organization: University of Lethbridge
Date: 29 Sep 92 07:18:00 GMT

                /\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\

                     LOW LATITUDE AURORAL ACTIVITY WATCH

                        ISSUED: 06:15 UT, 29 SEPTEMBER

                /\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\


MODERATE RISK PERIOD: 29 Sep - 30 Sep (UT days)

POTENTIAL MAGNITUDE OF LOW LATITUDE AURORAL ACTIVITY:  LOW - MODERATE

POTENTIAL EQUATORWARD POSITION OF AURORAL OVAL:  >43 North Latitude

POTENTIAL LUNAR INTERFERENCE:  LOW

OVERALL OPPORTUNITY FOR OBSERVATIONS FROM LOW LATITUDES:  FAIR

AURORAL ACTIVITY MAY BE OBSERVED APPROXIMATELY NORTH OF A LINE FROM...

        OREGON TO SOUTHERN IDAHO AND PARTS OF NORTHERN UTAH TO WYOMING TO
        NEBRASKA TO NORTHERN MISSOURI TO ILLINOIS TO INDIANA AND POSSIBLY
        PARTS OF KENTUCKY TO WEST VIRGINIA TO DELAWARE.


SYNOPSIS...

     An intense burst of auroral activity has occurred over the last three
     hours.  The source of this disturbance is uncertain, but is likely
     related to a well placed solar coronal hole.  The equatorward edge of
     the auroral oval was observed at the zenith near geographic 115W48N at
     06:00 UTC.  Moderate levels of auroral activity may be observed over the
     lower latitude regions if this disturbance continues. Lunar phase will
     not inhibit attempts to view activity. Conditions are therefore optimum.

     This watch will remain active until 19:00 UT on 30 September when it
     will either be updated or allowed to expire.


**  End of Watch  **
Newsgroups: sci.astro
From: tholen@galileo.ifa.hawaii.edu (Dave Tholen)
Subject: Re: NASA CD-ROM (JPL Ephemeris)
Organization: Institute for Astronomy, Hawaii
Date: Thu, 1 Oct 1992 02:30:24 GMT

Gerard M. Foley writes:

>    The CD-ROMs labelled "Goddard Space Flight Center Selected
> Astronomical Catalogs - Vol. 1" Nos. 1 and 2 have what appear
> to be identical directories \ASTROM\JPLEPHEM.  These contain
> two large data files, with four files *.FOR which appear to
> be Fortran Source Code to be compiled to a program to run on
> a main-frame and read tape files and compose selected 
> ephemerises (ephemera?).

The plural is ephemerides.  And it's pronounced "EF-eh-MARE-ih-DEEZ", not
"eh-FEM-a-RIDES".
Newsgroups: sci.astro,sci.physics
From: fischer@physun.physics.mcmaster.ca (Phil Fischer)
Subject: Re: Progress with New Cosmologies (& discrete redshifts)
Organization: Dept. of Physics & Astronomy, McMaster University
Date: Mon, 5 Oct 1992 22:07:36 GMT

In article <BvL0H2.F1s@well.sf.ca.us> metares@well.sf.ca.us (Tom Van Flandern) writes:
>
>     The Meta Research Bulletin, issued quarterly, is currently distributed
>free to contributors of $25 or more in any year to support the astronomy
>research activities of Meta Research.  The organization is a tax-emempt,
>non-profit, scientific research group based in Washington, DC.  A sample copy
>of the Bulletin is available on request.  Address: P.O. Box 15186, Chevy
>Chase, MD 20815.
>
How about a free sample issue to a cash-strapped Grad student?

Phil
-- 
Phil Fischer                         | Hamilton, Ont.
fischer@crocus.physics.mcmaster.ca   | Canada
Dept. of Physics and Astronomy       | L8S 4M1
McMaster University                  | 416-525-9140 X 4574
Newsgroups: sci.astro
From: martin@space.ualberta.ca (Martin Connors)
Subject: Re: NASA CD-ROM (JPL Ephemeris)
Reply-To: martin@space.ualberta.ca (Martin Connors)
Organization: University Of Alberta, Edmonton Canada
Date: Fri, 2 Oct 1992 19:39:37 GMT

In article <3NyyRB4w165w@bluemoon.rn.com> gerry@bluemoon.rn.com (Gerard M.  
Foley) writes:
> tholen@galileo.ifa.hawaii.edu (Dave Tholen) writes:
>> Gerard M. Foley writes:
>> > >a main-frame and read tape files and compose selected 
> > >ephemerises (ephemera?).
>> The plural is ephemerides.  And it's pronounced "EF-eh-MARE-ih-DEEZ",  
not
>> "eh-FEM-a-RIDES".
> 
> I knew that!!!!
> 
I was kind of hoping someone would ANSWER Gerry's question but while we  
are on the topic of ephemera (it is a real word) here are all relevant  
definitions, all based on a Greek root having to do with time:

ephem er on \i-'fem-e-,ra n\ n,  pl ephem era \-'fem-(e-)re\
[NL, fr. Gk ephe mern mayfly, fr. neut. of ephe mers]
(1626)
1 pl also ephem.er.ons \-'fem-e-,ra nz\: an insect (as a mayfly) that  
lives only a very short time
2 pl: matter of no lasting significance; esp: collectibles (as posters,  
broadsides, and tickets) that were orig. intended to have only ephemeral  
value 

ephem er is \-e-res\ n,  pl eph e mer i des \,ef-e-'mer-e-,de z\
[L, diary, ephemeris, fr. Gk ephe meris, fr. ephe mers]
(1508)
1: a tabular statement of the assigned places of a celestial body for  
regular intervals
2: EPHEMERAL 

1ephem er al \i-'fem(-e)-rel\ adj
[Gk ephe mers lasting a day, daily, fr. epi- + he mera day]
(1576)
1: lasting one day only "an ephemeral fever"
2: lasting a very short time "ephemeral pleasures"
syn see TRANSIENT 
  ephem er al ly \-re-le \ adv 

2ephemeral n
(1817)
:something ephemeral; specif: a plant that grows, flowers, and dies in a  
few days 

  Thesaurus:

ephemeral  adj
   syn    TRANSIENT, evanescent, fleeting, fugacious, fugitive, momentary,  
passing, short-lived, transitory, volatile 
   rel    brief, short, temporary, unenduring; episodic 
   idiom  here today and gone tomorrow
   con    endless, enduring, eternal, everlasting, lasting
   ant    perpetual

I leave it to Dave to discover an asteroid and name it Ephemeron, simply  
so that someone who does a quickie chart for it, valid only for a short  
period, can claim to have made an "ephemeral ephemeris for Ephemeron".

Martin Connors
Bored in Great White North
Newsgroups: sci.astro
From: landsman@stars.gsfc.nasa.gov (Wayne Landsman (301)-286-3625)
Subject: Explanatory Supplement -- 1992 edition
News-Software: VAX/VMS VNEWS 1.4-b1  
Organization: NASA/GSFC-Laboratory for Astronomy and Solar Physics
Date: Fri, 2 Oct 1992 21:20:00 GMT


I just received today my long-awaited copy of the completely revised and
rewritten 1992 Explanatory Supplement to the Astronomical Almanac ($65 from
University Science Books, 20 Edgehill Road, Mill Valley, CA 94941,
FAX: (415)-383-3167).    The book is attractive looking and my first
impression of the 752 pages is that the text is well-written also.   I
am looking forward to working my way through it.

--Wayne Landsman                             landsman@stars.gsfc.nasa.gov
From: roelle@uars_mag.jhuapl.edu (Curtis Roelle)
Newsgroups: sci.astro
Subject: Seeking Cause of Neptunian Irregularities.
Summary: What causes Neptune's Orbit to Appear Irregular?
Keywords: Neptune irregularities
Date: 28 Sep 92 16:13:24 GMT
Organization: Johns Hopkins University


	Last week on p. 59 of the weekly news magazine _TIME_ was a piece on
the discovery of 1992 QB1, the recently found minor body beyond the orbit of
Pluto, entitled "BEYOND PLUTO".  At the end of the piece it stated:

	"Planet X was first dreamed up to explain apparent irregularities
	in Neptune's orbit.  Recent studies have shown those irregularities
	to be an illusion..."

I was aware that ephemerides of Neptune's motion relied on observations to
make adjustments for these irregularities, but was unaware that the cause 
of them was understood, nor that it was due to an illusion.  

Would someone explain what has caused these irregularities in Neptune's
observed motion?

Curt Roelle
From: mjb@mulka.ph.unimelb.edu.au (Michael Beeching)
Newsgroups: sci.astro
Subject: Shape of telescope mirror?
Date: 28 Sep 92 03:53:35 GMT
Organization: University of Melbourne, Australia


	Ok, so I am about to embark on grinding my own reflector
mirror (no this is not my problem!) and I thought I'd get the
process understood before I started. Well, everything seems ok
apart from the final stage of converting the spherical shape to
one of a parabola. In a number of sources that I have, it says that
you need to "...deepen the centre of the mirror" Now from all the
calculations that I have done, it seems clear that you need to grind
out the mirror more away from the centre! In fact a sphere and
parabola (with equal focal lengths) if placed on top of each other,
shows that the sphere is always higher! (ie you can place the sphere
into the parabold and just have the lowest points touching) So what
am I missing here? Any help before the I reach the final stages
(about 2 years :-) would be greatly appreciated.

Michael
From: j.jahn@abbs.hanse.de (Jost Jahn)
Newsgroups: sci.astro
Subject: Sunspots at 25.09.1992.
Reply-To: j.jahn@abbs.hanse.de
Date: 25 Sep 92 18:36:00 MESZ
Distribution: sci
Organization: ABBS AstroMail, D-W 2121 Dahlenburg / Germany
X-Version: ZerUU V6.45c

Sunspots at 25.09.1992., 0 h UT.

No.    Pos.  Cl.  Ar.  Mag. SF  F  M  X
---------------------------------------
7283 15S 50W Hsx   90   a    1
7287 08N 53W Bxo   30   b
7288 18S 34W Dao   60   b    3
7289 10S 11E Cso  200   b    2
7291 05S 13W Bxo   20   b
7292 19N 49E Axx   10   a
7293 07S 54E Cao   70   b    1
7294 11S 72E Hax  170   a

Explanations of spot columns:
No.  Running number of sunspot group.
Pos. Position in Latitude and Longitude.
     N - North, S- South, E - East, W- West.
Cl.  MacIntosh classification.
Ar.  Area in 10-6 of visible hemisphere.
Mag. Magnetic Classification.
     a - alpha, b - beta, bg - beta/gamma,
     g - gamma, bd - beta/delta, bg - gamma/delta
     bgd - beta/gamma/delta.
SF   Number of subflares.
F    Number of optical flares. (importance > 1).
M    Number of medium x-ray eruptions.
X    Number of strong x-ray eruptions.


No optical or x-ray flares yesterday observed.


 
--
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From: bafta@cats.ucsc.edu (Shari L Brooks)
Newsgroups: sci.astro
Subject: Re: ALTERNATIVE Comet Rendezvous Mission
Summary: Warning don't take this seriously
Date: 7 Oct 92 01:54:18 GMT
Organization: University of California - Santa Cruz, CA, USA
NNTP-Posting-Host: am.ucsc.edu


In article <1992Oct6.165819.1560@cnsvax.uwec.edu> mcelwre@cnsvax.uwec.edu 
writes:

>
>                      ALTERNATIVE Comet Rendezvous Mission
>
This is all I need to quote.  Warning!  This fella has been posting his
propaganda to sci.space as well.  There, he claimed that there was nothing
short of a full scale battle on the moon between the Russian and *Bolshevik*
American moon bases, with the Russians winning (because of their JUMBO
COSMOSPHERES).  So *please* don't take him seriously, he is more cracked
than Hannu ever dreamed...

-- 
If you blow fire against the wind, take care to not get the smoke in your eyes.
      Big & Growly Dragon-monster        |       bafta@cats.ucsc.edu
     ------> shari brooks <-------       |       bafta@ucscb.ucsc.edu
                             All opinions are my own.
Newsgroups: sci.astro
From: palmer@sfu.ca (Leigh Palmer)
Subject: Re: The color violet?
Organization: Simon Fraser University
Date: Thu, 1 Oct 1992 17:57:12 GMT

In article <1992Oct1.005612.23001@sfu.ca> palmer@sfu.ca (Leigh Palmer) writes:

>Those of us who do photometry have begun to evolve red-leak cones with
>phase inverting synapses for alias inhibition. We never confuse purlet
>with viople! :<)
>
>Seriously, filters used in Johnson UBV photometry have an analogous 
>"defect" in color discrimination. The Johnson R filter leaks a little 
>U light (or vice-versa; I can't recall which, and I don't have a 
>reference handy). It is fixed with a workaround which employs a fourth 
>filter which is all leak, the signal from which is subtracted from the 
>R signal.
>
>Leigh

Ben Zellner from the Space Telescope Science Institute was kind enough to
correct my error in the above posting, but he did not post the  correction,
which I think deserves notice here immediately, lest false impressions be
left otherwise. Here is the substance of his note to me:

>The Johnson U filter has a significant red leak, and a red filter
>is sometimes put in along with the U filter to measure it.  As I recall, 
>however, Harold Johnson himself never did that.  His point of view was that 
>the UBV colors were what he measured at the telescope, without any fudge
>factors.  
>
>Ben

The idea that percept aliasing of violet as purple might occur due to the
presence of the small violet peak in the red response of the eye was a new
one to me, and I'd like to thank the original poster (whoever he was) for
that idea, which must be correct. I guess I should have said I was evolving
"violet-leak" cones with phase inverting synapses!

As we age our eyes become less relatively sensitive to violet light due to
degradation of the transmission of the lens. Some people who have had
prosthetic lenses implanted report restored vision in the ultraviolet (the
ability to see more Balmer lines has been reported).

Leigh

Newsgroups: sci.astro