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 Equipment Discussions >> Binoculars Previous   Index   Next   Flat   cosmic camper member Reged: 06/12/08 Posts: 22 Loc: Santa Cruz, CA Re: Mirror Source       06/21/08 01:59 PM Edit   Reply   Quote   Quick Reply:   Thanks, Glenn. I follow your argument, and it's the best I've seen yet. I'm just thinking though that since there is only a single reflection there might be no doubling of the wavefront error as with a secondary, i.e. there is zero error to start. So does that then make it 1/1.414 = 0.71 lambda? -------------------- Paul, the Cosmic Camper __________________________________ 2005 Ford Econoline camper van 16" Astro Sky/Swayze truss tube dob DGM 5.5" off-axis dob Celestron Nexstar 5SE Post Extras       Entire thread Subject Posted by Posted on Mirror Source cosmic camper 06/13/08 01:48 PM Re: Mirror Source EdZ   06/13/08 02:02 PM Re: Mirror Source cosmic camper   06/14/08 12:53 PM Re: Mirror Source OBERWERK   06/14/08 01:20 PM Re: Mirror Source GlennLeDrew   06/18/08 08:40 PM Re: Mirror Source Wes James   06/19/08 07:15 AM Re: Mirror Source EdZ   06/19/08 09:03 AM Re: Mirror Source cosmic camper   06/20/08 11:49 AM Re: Mirror Source GlennLeDrew   06/20/08 07:58 PM Re: Mirror Source GlennLeDrew   06/20/08 08:02 PM Re: Mirror Source cosmic camper   06/21/08 01:59 PM Re: Mirror Source GlennLeDrew   06/21/08 09:31 PM Re: Mirror Source KennyJ   06/22/08 04:29 AM Re: Mirror Source cosmic camper   06/22/08 01:11 PM Re: Mirror Source GlennLeDrew   06/22/08 07:06 PM Re: Mirror Source rodelaet   06/23/08 04:36 PM Re: Mirror Source GlennLeDrew   06/23/08 07:23 PM Extra information 7 registered and 20 anonymous users are browsing this forum. Moderator:  EdZ  Forum Permissions       You cannot start new topics       You cannot reply to topics       HTML is disabled       UBBCode is enabled Rating: Thread views: 769 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

Cloudy Nights Sponsor: Astronomics