· Get a Cloudy Nights T-Shirt · Submit a Review / Article    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] Forum Archives · Entrance · Main Index · Search · New user · Who's Online FAQ · Calendar Equipment Discussions >> Refractors Previous   Index   Next   Threaded   Pages: 1 | 2 | 3 | (show all) John Wall III member Reged: 03/07/08 Posts: 73 Loc: Angleton, Texas USA Re: Startest of Astro Tech AT 111 EDT [Re: John Wall III]       #2360876 - 04/29/08 11:19 PM Edit   Reply   Quote Quick Reply   Also I forgot to mention that I used a 2X Barlow for the low power pix making it about 80X. http://www.pbase.com/lightstuff/testing&page=3 -------------------- Wishing you Clear Skies, JVWIII http://www.pbase.com/lightstuff Post Extras:       Planetarius member Reged: 04/17/08 Posts: 23 Loc: Karlsruhe, Germany Re: Startest of Astro Tech AT 111 EDT [Re: John Wall III]       #2364898 - 05/01/08 05:55 PM Edit   Reply   Quote Quick Reply   Excellent John. No color fringes in any picture, perfect round, intra- and extrafocal pictures identical. Looking critical, there is a slight "feature" sometimes between 9 and 10 and sometimes between 3 and 4 o´clock. Unless you mixed up intra- and extrafocal partly, there is no correlation of feature position and i-/e focal position. I don´t know what this could be, but I can´t imagine this works out negatively to the picture quality even a bit, it might not even derive from the objective. Congrats to your scope and thanks for your help with this Volker Post Extras:       Pages: 1 | 2 | 3 | (show all) Previous   Index   Next   Threaded   Extra information 19 registered and 14 anonymous users are browsing this forum. Moderator:  desertstars, Remy Bosio, Jason B, LLEEGE  Print Thread Forum Permissions       You cannot start new topics       You cannot reply to topics       HTML is disabled       UBBCode is enabled Thread views: 3253 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 and Intermediate Imaging   Film Astrophotography   DSLR & Digital Camera Astro Imaging & Processing   CCD Imaging & Processing   Solar System Imaging & Processing   Sketching   Astro Imaging/Sketching Contest *Observing* -----   NEO   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 CN Forums Home

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