Click here if you are having trouble logging into the forums Cloudy Nights - Official Forums of the 2009 International Year of Astronomy Privacy Policy | Please read our Terms of Service | Signup and Troubleshooting FAQ | Problems? PM a Red or a Green Gu.... uh, User   You are not logged in. [Login] Entrance · Main Index · Search · New user · Who's Online FAQ · Calendar Observing >> Deep Sky Observing Previous   Index   Next   Threaded   Pages: 1 novbabies Postmaster Reged: 06/05/05 Posts: 15678 Loc: Northern Georgia! A Fun Glitch       #948754 - 05/09/06 07:23 PM Edit   Reply   Quote Quick Reply   Go to this website. It is a very good one to calculate the limiting magnitude of your scope. HOWEVER.... The degrees from the zenith function is glitchy: if you enter 92 (ie, 2 deg BELOW the horizon), you get back a magnitude (in my case changes from 16.7 to 16.5). Sillier yet, if I enter 0 for my scope I get 16.7, while when I enter 7000 degrees from the zenith, I get back 9.9 as limiting magnitude... -------------------- Good Seeing! Mark Orion 12" XTi f/4.9 VERY old Edmund 6" f/8 reflector Assorted binoculars Post Extras:       Pages: 1 Previous   Index   Next   Threaded   Extra information 1 registered and 7 anonymous users are browsing this forum. Moderator:  matt, Olivier Biot  Print Thread Forum Permissions       You cannot start new topics       You cannot reply to topics       HTML is disabled       UBBCode is enabled Thread views: 178 Jump to *International Year of Astronomy 2009* -----   Global Coordination   Cornerstone Projects   Special Projects   Special Task Groups   Global Activities   National and Regional Activities   IYA 2009 in Africa   IYA 2009 in the USA*Announcements and News* -----   Cloudy Nights Announcements   Discussion of CN Articles, Reviews, and Reports   Beginners Forum   Celestial Events   Light Pollution*Equipment Discussions* -----   ATM, Optics and DIY Forum   Binoculars   Binoviewers   Cats & Casses   Classic Telescopes   Equipment   Eyepieces   Mounts   Observatories   Reflectors   Refractors    Celestron SkyScout and Meade mySky   Video and Electronically Assisted Astronomy*Astrophotography and Sketching* -----   Beginning Imaging   Film Astrophotography   DSLR & Digital Camera Astro Imaging & Processing   CCD Imaging & Processing   Solar System Imaging & Processing   Sketching   Astro Imaging/Sketching Contest *Observing* -----   General Observing   Planetary and Solar System Observing   Lunar Observing   Deep Sky Observing   Double Star Observing   Solar   Variable Star Observing and Radio Astronomy*Telescope Specific Forums* -----   Celestron NexStar    NexStar GPS / CPC Telescopes   Questar Forum   Meade ACF/RCX / LX / GPS    Meade ETX*Other* -----   Science of Astronomy & Space exploration   AstroWebsites   Space Rocks*Speciality Forums* -----   AstroArt   Astronomy Software & Computers   Stellar Media   Astro Outreach, Clubs and Star Parties*CN Feedback and Vendor Announcements* -----   Vendor and Group Announcements Home

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