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Colour of Mars by Dan McShane
Mick, More something like this? http://users.erols.com/dgmoptics/digital_mars_90ats.htm Dan McShane "Mick" wrote in...
July 30th 03 07:34 AM
by Chotechai Go to last post
8 1,003
Geomagnetic K-Index of 6 expected by Sam Wormley
Space Weather Message Code: WARK06 Serial Number: 77 Issue Time: 2003 Jul 30 0439 UTC WARNING: Geomagnetic K-Index of 6 expected Valid From: 2003 Jul 30 0450...
July 30th 03 05:44 AM
by Sam Wormley Go to last post
0 985
Good place to purchase coloured filters? by Rich McMahon
All Where is a good place to purchase a coloured filter set? I know orion has them any others? Tnx Rich
July 30th 03 04:55 AM
by Orion Go to last post
4 850
making a 8" mirror by heywood floyd
Hi, I am a college student and I am considering making my own mirror, I was wondering how hard it would be to create a 8" F/5 mirror from a pyrex blank, I...
July 29th 03 08:24 PM
by Bob May Go to last post
3 1,114
Orthoscopic eyepiece question by Joe S.
I was browsing around the WWW tonight and encountered the University Optics site and their Orthoscopic eyepieces. So, what's an Orthoscopic eyepiece versus...
(Multi-page thread 1 2 3 ... Last Page)
July 29th 03 07:51 PM
by Zane Go to last post
39 1,860
Maksutov Cassegrain question by Roger Hamlett
wrote in message ... I am just getting into astronomy and have already...
July 29th 03 07:09 PM
by andrea tasselli Go to last post
2 972
Kobe Bryant by My Word!
Just a blurb, I believe says it all. What do you call a black guy who has too much money, counts his crack in hotels, has 7 kids, doesn't pay child support,...
July 29th 03 06:45 PM
by Doogie Hoosier Go to last post
3 614
Kellner, Konig and Ortho by [email protected]
I was looking at adding some eyepieces to my collection. I currently have Meade Super Plossls, 6.4, 12, 15, 20, 26, 32, 40. I have a 2x barlow, and a televue...
July 29th 03 06:07 PM
by Edward Go to last post
1 682
Using 1.25" Filters with .965" Eyepieces? by Edward
Hello All, I'm hoping to find a 1.25" to .965" adapter that will allow use of 1.25" filters with .965 eyepieces. If I'm not successful with that, who's...
July 29th 03 05:53 PM
by Edward Go to last post
6 923
Letter to Congress on Near Earth Objects by Matt
This web page is a joke, right? --matt Steve Dufour wrote: I think this is important. Maybe even more important than WMD's. ...
July 29th 03 05:44 PM
by Bill Foley Go to last post
2 623
Homemade telescope by Red Green
I just built my first homemade telescope. I used a cement mixer for the tube and mount, a glass salad bowl for the lens, and duct tape for everything else....
July 29th 03 05:43 PM
by Bill Foley Go to last post
2 707
Past, Present and Future of the SCT by Rod Mollise
Hi Gang: The .ppt slides from my 2003 ALCON presentation, "The Past, Present and Future of the Schmidt Cassegrain Telescope" are now available for download...
(Multi-page thread 1 2 3 ... Last Page)
July 29th 03 03:36 PM
by Herm Go to last post
64 4,282
Field Flattener for 11" F10 SCT by Jose Suro
Hi, Is it theoretically possible to build a 48mm format field flattener for an 11-inch, F10 SCT that would not change the F-ratio of the scope? Would it have...
July 29th 03 03:27 PM
by Herm Go to last post
9 1,403
Fluorite vs. ED for film imaging by PJ
I was recently imformed that a fluorite refractor is bad for film imaging because the focus changes during long exposures, whereas an ED refractor will retain...
July 29th 03 02:29 PM
by Jb2269 Go to last post
8 1,093
Secondary size & CCD imaging by Rod Mollise
Considering all this, could one not replace the 4" secondary currently installed with something much smaller, such as a 2.6" or 3"? Hi: You could....
July 29th 03 02:12 PM
by Brian Go to last post
6 941
Short Tube Catadioptric Equatorial Reflector..help needed please by Dawson
Hi. We have just acquired a (2nd hand) short tube catadioptric equatorial reflector telescope, D=114mm F=1000mm. The maker, we assume, is G-Tech USA (written...
July 29th 03 01:21 PM
by Jon Isaacs Go to last post
1 3,399
My C8 Mars Gallery by Oldfield So
Dear all, This is the first opposition since I started imaging: http://oldfield.uhome.net/star/photo/c8/mars.html Tracked using motorized Giro mount, inside...
July 29th 03 01:20 PM
by Søren Kjærsgaard Go to last post
2 796
Re. Millennium Mount ll ? by Marc Zukoff
Hi, I am considering a few months for an observatory. I am also loooking at the Millennium mount-2. I have gotten a few reviews of this mount, and they were...
July 29th 03 12:19 PM
by Marc Zukoff Go to last post
0 866
Eyepieces and dew: question by JAS
I have spent the last few mornings observing Mars. I live near a creek in a wooded area and there is lots of moisture in the air. After about 30 minutes, the...
July 29th 03 10:13 AM
by Rich McMahon Go to last post
1 1,298
ALERT: Geomagnetic K-index of 6 -- Threshold Reached: 2003 Jul 29 0406UTC by Sam Wormley
Space Weather Message Code: ALTK06 Serial Number: 113 Issue Time: 2003 Jul 29 0408 UTC ALERT: Geomagnetic K-index of 6 Threshold Reached: 2003 Jul 29 0406...
July 29th 03 05:21 AM
by Sam Wormley Go to last post
0 1,040
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