HDTenEightyP/NetNews huggingface dataset:
From: oler@rho.uleth.ca (Cary Oler)
Subject: Daily Solar Geophysical Data Broadcast for 12 April
Organization: University of Lethbridge
Date: 13 Apr 92 06:11:08 GMT

!!BEGIN!! (1.0) S.T.D. Solar Geophysical Data Broadcast for DAY 103, 04/12/92
10.7 FLUX=143.9  90-AVG=194        SSN=079      BKI=0111 0201  BAI=002
BGND-XRAY=B4.6     FLU1=1.9E+06  FLU10=8.2E+03  PKI=1122 2222  PAI=006
  BOU-DEV=001,006,008,009,003,015,004,006   DEV-AVG=006 NT     SWF=00:000
 XRAY-MAX= B6.9   @ 0322UT    XRAY-MIN= B4.3   @ 2343UT   XRAY-AVG= B5.1
NEUTN-MAX= +001%  @ 2305UT   NEUTN-MIN= -003%  @ 1100UT  NEUTN-AVG= -0.4%
  PCA-MAX= +0.2DB @ 2220UT     PCA-MIN= -0.9DB @ 1905UT    PCA-AVG= -0.0DB
BOUTF-MAX=55284NT @ 1455UT   BOUTF-MIN=55255NT @ 1957UT  BOUTF-AVG=55272NT
GOES7-MAX=P:+118NT@ 1602UT   GOES7-MIN=N:+002NT@ 0517UT  G7-AVG=+094,+035,+011
GOES6-MAX=P:+126NT@ 1853UT   GOES6-MIN=E:-022NT@ 1855UT  G6-AVG=+105,-001,+027
 FLUXFCST=STD:145,145,150;SESC:145,145,150 BAI/PAI-FCST=010,015,015/010,010,010
    KFCST=2224 4332 3335 5332  27DAY-AP=013,021   27DAY-KP=2223 3343 3233 4444
 WARNINGS=
   ALERTS=
!!END-DATA!!
Newsgroups: sci.astro
From: ron@mlfarm.com (Ronald Florence)
Subject: Re: Save Palomar Observatory!
Organization: Maple Lawn Farm, Stonington, CT
	<1226@blue.cis.pitt.edu.UUCP>
	<1992Apr6.034240.11025@maccs.dcss.mcmaster.ca>
Date: Tue, 7 Apr 1992 11:44:45 GMT

Phil Fischer writes:

   At the risk of incurring a lot of wrath, perhaps astronomers should
   begin to accept that telecopes should not be expected to last 100
   years or more. The technology since Hale was built has changed
   radically, and telescopes like Hale were not designed for modern
   instrumentation (i.e. CCD's).  

The Hale model (massive equatorial mount, Pyrex disc) may have
retarded innovation in the construction of large telescopes in the
years after the 200-inch was finished, but I'm not sure I would write
off the 200 so soon.  The telescope was not designed for contemporary
detectors, but it works very well indeed with a variety of CCD
instrumentation; the sheer massiveness of the mounting makes it
possible to hang large instruments (like the Norris spectrograph) off
the Cassegrain focus with relatively little effect on the balance of
the telescope.  The equatorial mounting of an older telescope like the
200 also means the instrument packages don't have to be rotated during
exposures.  Years of use have also provided invaluable baselines for
the Palomar instruments, and the recent programs to improve the local
seeing have been successful.

The 200 is an extremely productive instrument, and could remain so for
a long time if the site is not jeopardized by unnecessary light
pollution.  Great telescopes don't have to be a throw-away technology. 
-- 

				Ronald Florence
				ron@mlfarm.com
From: Jeff.Cook@FtCollinsCO.NCR.COM (Jeff Cook)
Newsgroups: sci.astro
Subject: Re: sci.astro.amateur?
Date: 8 Apr 92 14:21:16 GMT
	<1992Apr7.150110.7927@nsisrv.gsfc.nasa.gov>
Organization: none
In-reply-to: dsc@gemini.tmc.edu's message of 7 Apr 92 15:01:10 GMT

In article <1992Apr7.150110.7927@nsisrv.gsfc.nasa.gov> dsc@gemini.tmc.edu (Doug S. Caprette Bldg. 28 W191 x3892) writes:

>In article <1992Apr7.001540.20151@mnemosyne.cs.du.edu> jcastner@isis.cs.du.edu (John Castner) writes:
>>
>>   I was wondering if anyone else out there saw a need for a new
>>newsgroup, devoted to amateur astronomy, and containing primarily
>>the many discussions on telescopes and telescope making presently
>>found in this group.  I feel that as someone interested in astronomy,
>>...
>
>Since amateur astronomy is a recreation activity, even when 'real' science is
>being done (its still fun) how about:
>
>rec.astro
>
>?

I have to respectfully disagree with this.  Amateur astronomers serve
the scientific community through organizations such as the AAVSO and
IMO, and as individuals through new discoveries of such things as
comets, novae, asteroids and variable stars.

In addition, while it's true that amateur astronomers are doing it for
enjoyment, that doesn't mean it's not science.  (When did science stop
being fun?)  I suspect the professionals are doing it for fun, too.
Otherwise, they would have gotten jobs as accountants or car salesmen.
The main difference between the pros and the amateurs is that the pros
get paid for their efforts.  We don't.

Amateur astronomy encompasses many fields, such as optics, electronics,
mathematics, computer science, and mechanical engineering.  The serious
amateur has a broad range of interests, and a love of the science that
sometimes surpasses the professional.  How many astronomers get up at
3 AM every morning to sit out in the bitter cold in front of an eyepiece
to watch a star being occulted by an asteroid, or to look for a new
comet?  Amateur astronomers do this all the time, and have to find a way
to do it while holding down a regular job and family commitments.

To put amateur astronomy in the same category as rec.games.video or
rec.humor.funny would be terribly unfortunate, and would send the wrong
message to anyone with a budding interest in the subject.  Amateur
astronomy _is_ science, and IMHO it should stay in the science
heirarchy.
--

------------------------------------------------------------------------
Jeffrey L. Cook                            Jeff.Cook@FtCollinsCO.NCR.com
NCR Microelectronics                      uunet!ncrlnk!ncr-mpd!jeff.cook
2001 Danfield Court                             72506.237@compuserve.com
Fort Collins, CO 80525                            Compuserve:  72506,237
------------------------------------------------------------------------
From: richmond@flipper (Stupendous Man)
Newsgroups: sci.astro
Subject: Re: Hubble Guide Star Catalog on CDROM
Date: 9 Apr 92 20:35:16 GMT
Article-I.D.: agate.s29q4INN3i9
Organization: /etc/organization
NNTP-Posting-Host: flipper.berkeley.edu


  (Jim Sharpe) writes:
>
>I was just looking through a catalog from the Astronomical Society of the 
>Pacific and noticed a two volume cdrom set containing the Hubble space 
>telescope guide star catalog.  The copy says nifty things like "18,819,291 
>celestial objects" ... "15 million stars and 3 million nonstellar objects."

>    .. are cdrom drives for unix boxes (specifically Sun or HP, ISO-9660) 
>able to read this version of the Hubble guide star catalog on cdrom?  

   I use the Hubble GSC CD-Rom all the time on our Sun Sparc IPC and Sparc 2 
- but there's one catch: the change from SunOs 4.1.1 to 4.1.2 made 
the CD-Roms unreadable.  Evidently the driver for the cd player changed.
Anyway, there's a kernal patch you can make that fixes the problem.
If someone needs to know, send me mail and I'll try to dig it up.

   There's software in the latest version of the STSDAS package inside
IRAF to read the CD-Rom, but I wrote my own.  It's not very difficult -
the information in the catalog is stored in ASCII form (well, in 
ASCII FITS tables, but it's ASCII nonetheless).  The only hard part
is figuring out which of the 730-odd files you have to open to look in
a specfied direction (or, which several files).  

   My only complaint with the catalog is that it comes on 2 disks, so 
you have to switch CDs every time you go from above Dec = -7.5 to below,
or vice versa.  Our solution was to read in all the information and store
it in a compressed form on disk - if all you care about is 
                    Ra, Dec, magnitude
the entire catalog can fit in roughly 70 Megabytes.  Much easier to 
deal with.

-- 
--                                          Michael Richmond
"This is the heart that broke my finger."   richmond@bkyast.berkeley.edu
From: baalke@kelvin.jpl.nasa.gov (Ron Baalke)
Newsgroups: sci.astro
Subject: Re: Ring arcs of Neptune
Keywords: Lagrangian points
Date: 15 Apr 92 05:51:53 GMT
Article-I.D.: elroy.1992Apr14.215541.27323
Reply-To: baalke@kelvin.jpl.nasa.gov
Followup-To: sci.astro
Organization: Jet Propulsion Laboratory
News-Software: VAX/VMS VNEWS 1.3-4

In article <1992Apr9.163440.5236@mailer.cc.fsu.edu>, cain@geomag.gly.fsu.edu (Joe Cain) writes...
> 
>	In the article by Joseph Burns in the New Solar System (Sky
>Publishing 1990, p. 163) a reference is made to a theory that the ring
>arcs are related to the (L4 and L5 I presume) Lagrangian locations of
>a sheparding satellite. If this is a viable theory for Neptune, why is
>some bunching not also seen around the other ringed planets>
> 

Check out the article in the March/April 1992 issue of The Planetary Report
written by Carol Porco, one of the Voyager scientists.  The most plausible
explanation for the acrs is gravitational resonances of small shephard moons.
Another possiblity is that the rings themselves contain a small moon. 
     ___    _____     ___
    /_ /|  /____/ \  /_ /|     Ron Baalke         | baalke@kelvin.jpl.nasa.gov
    | | | |  __ \ /| | | |     Jet Propulsion Lab |
 ___| | | | |__) |/  | | |__   M/S 525-3684 Telos | People will believe
/___| | | |  ___/    | |/__ /| Pasadena, CA 91109 | anything if you whisper it.
|_____|/  |_|/       |_____|/                     | 
Newsgroups: sci.astro,sci.geo.meteorology,rec.radio.amateur.misc,rec.radio.shortwave
From: oler@rho.uleth.ca (Cary Oler)
Subject: AURORA WATCH:  Extended for Middle Latitudes
Organization: University of Lethbridge
Date:  6 Apr 92 07:15:51 GMT

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

                    MIDDLE LATITUDE AURORAL ACTIVITY WATCH

                         EXTENDED: 07:00 UT, 06 APRIL

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

VALID UNTIL: 18:00 UTC ON 07 APRIL

MODERATE RISK PERIOD: 06 - 07 April (UT days)

POTENTIAL MAGNITUDE OF MIDDLE LATITUDE AURORAL ACTIVITY:  MODERATE

POTENTIAL LUNAR INTERFERENCE:  LOW

OVERALL OPPORTUNITY FOR OBSERVATIONS FROM MIDDLE LATITUDES:  FAIR - GOOD

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

        NORTHERN OREGON TO SOUTHERN IDAHO TO WYOMING TO SOUTH DAKOTA TO
        NORTHERN IOWA TO NORTHERN ILLINOIS TO NORTHERN INDIANA TO OHIO TO
        DELAWARE.


SYNOPSIS...

     Auroral activity has increased considerably over North America during
the last several hours.  This burst of activity may only be temporary and of
fairly short duration.  However, the extent of the equatorward migration of
the auroral oval together with the enhanced levels of activity is sufficient
to warrant extending the Watch for middle latitudes for the period 06 to 07
April.  Conditions should continue to be sporadically active over the next 24
hours at least.

     Moderate to high levels of auroral activity have been observed
throughout the northern tier of U.S. states.  Curtains, rays, and pulsing
sheets have been reported, particularly over the southern Canadian regions
and extreme northern U.S. states between approximately 06-07Z on 06 April.

     This watch will be allowed to expire at 18Z on 07 April unless
conditions warrant.

     Please note that automated hourly reports of auroral activity sightings
from North American regions are now available for anonymous FTP from the
site: xi.uleth.ca (IP number 142.66.3.29) in the directory
"pub/solar/Aurora/current".  The file to get is "current.obs".


**  End of Watch  **
Newsgroups: sci.astro
From: gill@physics.ubc.ca (Arnold Gill visiting astrophys phd std)
Newsgroups: sci.astro
Subject: help in identifying astro catalogues
Date: 12 Apr 92 16:24:08 GMT
Organization: University of British Columbia, Vancouver, B.C., Canada


     I was looking over the Palomar sky survey the other day around the Mon R2
     region in particular, and noticed a lot of identifying catalogue entries.
     Things like LDNnnnn, NGCnnnn, LBNnnnn, DGnnn, etc.  Now, I know what the
     first two stand for (Lynd's Dark Nebulae and New General Catalogue), but
     what are the LBN and DG catalogues??  Are they optical catalogues?  Any
     references to them?

     Thanks for any help.

--
Arnold Gill --- astrophysician trainee in exile             gill@physics.ubc.ca
From: converse@cs.uchicago.edu (Tim Converse)
Newsgroups: sci.astro
Subject: when is the dark side of the moon visible to the naked eye?
Date: 6 Apr 92 03:03:39 GMT
Distribution: sci
Organization: University of Chicago Computer Science


	I'm no astronomer, and I don't read this group regularly, but 
I thought some of you more educated people might help satisfy my
curiosity.

	As I walked to work tonight, the moon was visible as a very
thin crescent.  As I looked at it, I realized that the _rest_ of it
(the unlit portion) was visible as a disc of gray, just barely (but
perceptibly) lighter than the surrounding sky.

	I generally imagine that only the sunlit portion of the moon
is visible, so this surprised me.  Is it unusual to be able to see
the "night" side of the moon with the naked eye?  It occurred to me
that, since this was only a couple of hours after sunset, the darker 
portion might be illuminated by more "earthshine" than it would be
later at night.  The moon was low in the western sky, which I guess
would mean that the earth might be nearly full at that point.

	And a spacier historical question:  at what point in
astronomical history was it figured out that the moon was a globe
that was lit from different directions at different times?  Is that 
just a post-Copernican idea?  I ask partly because it seems like it might
be an easier conclusion to arrive at if you had the sort of experience
that I just had.

	-- Tim Converse
--
-------------------------------------------------------------------------------
Tim Converse  U. of Chicago AI Lab   converse@cs.uchicago.edu  (312) 702-8584
From: rclark@lpl.arizona.edu (Richard Clark x4971)
Newsgroups: sci.astro
Subject: Re: Alien fingers and toes
Date: 10 Apr 92 10:31:42 GMT
Organization: Lunar & Planetary Laboratory, Tucson AZ.

>>	   Here's a good unanswered question: why 5 fingers? The genetic
>>   variability for more or less is known to be there, but 5 digits has real
>>   staying power: it goes way back into the fossil record as by far the most
>>   common number for anything without hooves.
>>
>>
>>For all you asking yourselves "This is astronomy?": There ought to be
>>a sci.origins group where this neat stuff could be discussed w/o all
>>the flames found in talk.origins, but there ain't.
>>
>
>Well, I would suggest sci.archaeology but we get "all those flames found
>in talk.origins"!  Unfortunately it's very difficult to weed out all the
>theological discussions.  Sometimes it gets to be an all out war between
>the creationists and the evolutionists.

This thread sounds like a natural for rec.arts.sf.science.
And there are no cretinists either!

--
Richard Clark
rclark@lpl.arizona.edu
Newsgroups: sci.astro
From: hagenl@opal.cs.tu-berlin.de (Lars Hagen)
Subject: Need Help, please
Summary: 1
Keywords: Help
Organization: Techn. University of Berlin, Germany
Distribution: fb20
Date: Wed, 15 Apr 1992 17:28:34 GMT

Hallo, 

at first - sorry my english is terrible !! But I need a little bit of help
and hope that one of you can help me.
I am a student in TU-Berlin (Germany) in Computer-Science. One of my famoust hobbys is the astro-physic. But I havent good programms for IBM-PC. 
When somebody of you can help my, please post a message in this group or send
me a email.

My adress is: hagenl@tu-berlin.de


Bye Lars
.

Newsgroups: sci.astro
From: beddow@ux.acs.umn.edu (Jeff Beddow)
Subject: archeoastronomy
Summary: references sought
Organization: University of Minnesota
Distribution: usa
Date: Sat, 11 Apr 1992 01:40:11 GMT

I am looking for information on american archeological sites
that might involve primitive observatories.  I am particularly
interested in anything in the midwest.
Thanks,
Jeff Beddow
612 348 3105
From: rbunge@access.digex.com (Robert Bunge)
Newsgroups: sci.astro
Subject: Re: sci.astro.amateur
Date: 11 Apr 92 13:58:08 GMT
Organization: Express Access Online Communications Service, Greenbelt, Maryland USA

In article <1992Apr8.235312.19456@cs.tulane.edu> harwood@cs.tulane.edu (Doug Harwood) writes:
>
>    I just started reading sci.astro a couple weeks ago, and I've enjoyed
>almost every article here, from the solar flare reports to general discussion
>and questions about astronomy, etc.  I don't think making a separate group
>for amateurs would be beneficial.  There's nothing that says that sci.astro
>-Doug


As a regular reader for the past couple of years (note, that once I 
got out of school, I was interested enough in sci.astro that I now
PAY -- $15 a month - to get it) I agree with the above.  

Also note that my Large Astronomical Project Listing would most likely
be MUCH different if the group had been split up a year ago.  And, of
course, another note is that many people can only recieve a limited
number of groups.  We'd lose these people.
 
Bob Bunge
From: yaron@astro.as.utexas.edu (Yaron Sheffer)
Newsgroups: sci.astro
Subject: Re: Clyde Tombaugh
Date: 16 Apr 92 17:39:35 GMT
Organization: University of Texas, McDonald Observatory

In article <1992Apr15.200800.3663@mercury.unt.edu> jx02@sol.acs.unt.edu (Benge Raymond Doyle Jr.) writes:
>This makes him the only living discoverer of a planet (unless you count
>discoverers of asteroids or the astronomers who claim to have found 
>planets around other stars).

And unless Pluto is not really a planet, but an escaped Neptunian moon
or a member of outer solar system asteroids. This matter has yet to be
settled, and has been discussed a lot in this group in the past.
Plus, of course, planets around pulsars are not the normal planets
that one sees in quietly evolving low-mass solar systems. We should
be aware of attaching PLANET labels to objects that are not deserving
them.
Newsgroups: sci.astro,rec.radio.amateur.misc,rec.radio.shortwave
From: oler@rho.uleth.ca (Cary Oler)
Subject: Daily Solar Geophysical Data Broadcast for 14 April
Organization: University of Lethbridge
Date: 15 Apr 92 05:01:25 GMT

!!BEGIN!! (1.0) S.T.D. Solar Geophysical Data Broadcast for DAY 105, 04/14/92
10.7 FLUX=154.2  90-AVG=193        SSN=125      BKI=0211 2222  BAI=005
BGND-XRAY=B4.7     FLU1=1.2E+06  FLU10=8.0E+03  PKI=2212 2333  PAI=010
  BOU-DEV=004,013,006,006,015,010,013,017   DEV-AVG=010 NT     SWF=00:000
 XRAY-MAX= C1.7   @ 1731UT    XRAY-MIN= B4.5   @ 2327UT   XRAY-AVG= B6.5
NEUTN-MAX= +003%  @ 1630UT   NEUTN-MIN= -001%  @ 2240UT  NEUTN-AVG= +0.4%
  PCA-MAX= +0.4DB @ 1800UT     PCA-MIN= -1.1DB @ 1335UT    PCA-AVG= +0.0DB
BOUTF-MAX=55434NT @ 0042UT   BOUTF-MIN=55242NT @ 1812UT  BOUTF-AVG=55269NT
GOES7-MAX=P:+133NT@ 2056UT   GOES7-MIN=N:-004NT@ 0759UT  G7-AVG=+087,+033,+009
GOES6-MAX=P:+145NT@ 2059UT   GOES6-MIN=E:-021NT@ 1848UT  G6-AVG=+101,-001,+025
 FLUXFCST=STD:155,160,165;SESC:155,160,165 BAI/PAI-FCST=015,010,010/015,010,010
    KFCST=3335 5443 2224 4221  27DAY-AP=013,006   27DAY-KP=4432 2222 2111 2221
 WARNINGS=
   ALERTS=**MAGSI:12NT@2025UT
!!END-DATA!!
From: davee@hpwrce.HP.COM (Dave Enos)
Date: Mon, 13 Apr 1992 23:27:35 GMT
Subject: Meade stepper motor replacement
Organization: the HP Mtn.View Resp. Cntr.
Newsgroups: sci.astro

Hello,
I need some help locating a replacement stepper motor for my Meade #784
motor drive.  Meade does not have replacements since it is long out of
production.  They did not have any specs either and there are no markings
on the motor.  If anyone knows the specifications of this motor or where a
replacement can be found i would be most grateful.  I have run out of
places to look.

Thanks,

davee@hpwrc03.mayfield.hp.com
Xref: sparky sci.astro:4811 sci.space:7310
From: ja_houser@vax.muskingum.edu (Vince Houser)
Newsgroups: sci.astro,sci.space
Subject: AURORAL REPOTS REQUEST
Date: 6 Apr 92 15:33:32 -0600
Organization: Muskingum College



       there is a watch out for the middle ladditudes i read off of SCI.NEWS

        please send your aurora reports  the WATCH is valid 'til 1800 ut on 
 
        the 4/7 

        lunar interferance is low
        
        auroral activity chance is moderate


         please mail to 

         ja_houser@vax.muskingum.edu

         
          thanks 

           jim


Xref: sparky sci.astro:5056 sci.space:7572 news.answers:1075
From: sichase@csa2.lbl.gov (SCOTT I CHASE)
Newsgroups: sci.astro
Subject: Re: Weight of Earth?
Date: 16 Apr 92 21:31:31 GMT
Organization: Lawrence Berkeley Laboratory - Berkeley, CA, USA
Distribution: na
Reply-To: sichase@csa2.lbl.gov
NNTP-Posting-Host: 128.3.254.197
News-Software: VAX/VMS VNEWS 1.3-4   

In article <1992Apr16.030725.4325@news2.cis.umn.edu>, rjg@umnstat.stat.umn.edu (Robert J. Granvin) writes...
>I know it's a strange question, and I know I can probably find it in
>a library (if I had the time to go there :-), but I'm in need of the
>approximate weight of the Earth (in tonnage?).
> 
>Does anyone have such a number on the tips of their fingers that they
>could email me?  Would appreciate it...
> 

The Earth weights "10 Moles of Kilograms", if I remember correctly.  That would 
be 6 x 10^24 Kg. 

--------------------
Scott I. Chase
SICHASE@CSA2.LBL.GOV

From: jackz@hpscit.sc.hp.com (Jack Zeiders)
Date: Mon, 13 Apr 1992 17:09:21 GMT
Subject: Re: Fluorite scope for sale
Organization: Hewlett-Packard, Santa Clara, CA
Newsgroups: sci.astro

> hpscit:sci.astro / degraaf@davidsys.com writes:

>VERY VERY GOOD TELECOPE FOR SALE

>7cm f:8 Celestron/Vixen FLOURITE APOCHROMATIC refractor
>   No central obstruction (unlike Questar)- higher contrast.
>   Better color corrected than ordinary refractors.
>Quad eyepiece holder and right angle mirror
>   No more dropping your eyepieces in the dark!
>Celestron 28mm Erfle eyepiece (20X and wide field of view)
>Meade 16.8mm orthoscopic eyepiece (33+X)
>Meade 7mm orthoscopic eyepiece (80X)
>   Yeah, you can go higher with even smaller eyepieces and/or a Barlow.
>6x35 finder
>   Even 560mm with 28mm (20X) needs a finder.
>RSuper PolarisS equatorial mount and tripod
>   Flexicables on both axes.
>RA drive with inverter
>   A bunch of AA cells drives this for a weekend.
>Polar finder with reticle
>   A nice luxury.
>Two piggyback mounts (one with dual axis slow motion)
>   Mount your camera or camcorder without irritation.
>Accessory plate
>   ...for the lunatic fringe
>Uranometria 2000 (volume one)
>   A detailed road map, pretty enough for a coffee table.

>Asking $1,500 (A new Celestron SP-C102F is over $2100!)

>Bruce (408)244-8146 San Jose, California
----------


	I had one of these for several years, it is indeed a very good
scope. During '88 Mars watch, I had one mounted on my C-8, the 70mm
fluorite gave better views easily! With the super Polaris mount it is
very stable and yet portable.

	I still have a 80mm Vixen Fluorite, and enjoy it often. I sold
a 102F to help gather a down payment for a house 6 years ago, it was a
great telescope! Vixen Fluorotes are lighter weight than Takahashis but
every bit their equal opticaly.

	The 70mm is no longer available in the U.S. as far as I know. Mine
would blow a Questar out of the water easily resolution wise. The f/8
vs f/15 of the Questar allowed a nice wide field as well.

	Whoever gets one of these will be the lucky owner of a rare piece.
I asked a guy at Orion, he said if they were available they would be around
$2k.


	Jack Zeiders
	

Newsgroups: sci.astro
From: jcj@tellabs.com (jcj)
Newsgroups: sci.astro
Subject: Nebular filters?
Keywords: Lumicon, Meade
Date: 14 Apr 92 22:01:58 GMT
Organization: Wazmodyne Industries
Originator: jcj@sunhc

I'd like to hear comments on the various brands of nebular filters
for visual observing.  Are Lumicon UHC and Deep Sky filters substantially 
better than Meade?  I'm also curious if anyone has had experience with
the Lumicon OIII filter.  Thanks.
-- 
		        jcj@tellabs.com