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   syed member Reged: 04/11/08 Posts: 75 Re: Pentax 20x60 PCF WP II (Prisms undersized)       06/07/08 10:27 AM Edit   Reply   Quote   Quick Reply:   Undersized prisms cause vignetting. Take a look at the exit pupil.If it is tending toward lozenge shape then that's an indication of undersized prisms.Undersized prisms are an indication of cost cutting during the manufacturing process. Post Extras       Entire thread Subject Posted by Posted on Pentax 20x60 PCF WP II (Prisms undersized) STEEL 06/07/08 07:26 AM Re: Pentax 20x60 PCF WP II (Prisms undersized) EdZ   06/07/08 08:45 AM Re: Pentax 20x60 PCF WP II (Prisms undersized) STEEL   06/07/08 09:24 AM Re: Pentax 20x60 PCF WP II (Prisms undersized) EdZ   06/07/08 10:17 AM Re: Pentax 20x60 PCF WP II (Prisms undersized) syed   06/07/08 10:27 AM Re: Pentax 20x60 PCF WP II (Prisms undersized) EdZ   06/07/08 10:44 AM Re: Pentax 20x60 PCF WP II (Prisms undersized) syed   06/07/08 10:54 AM Re: Pentax 20x60 PCF WP II (Prisms undersized) EdZ   06/07/08 03:31 PM Re: Pentax 20x60 PCF WP II (Prisms undersized) STEEL   06/08/08 02:52 PM Re: Pentax 20x60 PCF WP II (Prisms undersized) AV in CMH   06/09/08 08:54 AM Re: Pentax 20x60 PCF WP II (Prisms undersized) oneaudiopro   06/09/08 02:39 PM Re: Pentax 20x60 PCF WP II (Prisms undersized) STEEL   06/10/08 11:54 AM Re: Pentax 20x60 PCF WP II (Prisms undersized) oneaudiopro   06/10/08 02:20 PM Re: Pentax 20x60 PCF WP II (Prisms undersized) AV in CMH   06/10/08 02:31 PM Re: Pentax 20x60 PCF WP II (Prisms undersized) KennyJ   06/10/08 02:50 PM Re: Pentax 20x60 PCF WP II (Prisms undersized) STEEL   06/10/08 04:55 PM Re: Pentax 20x60 PCF WP II (Prisms undersized) patter1   06/10/08 07:30 PM Re: Pentax 20x60 PCF WP II (Prisms undersized) STEEL   06/11/08 04:02 PM Re: Pentax 20x60 PCF WP II (Prisms undersized) Wes James   06/11/08 04:21 PM Re: Pentax 20x60 PCF WP II (Prisms undersized) hallelujah   06/11/08 08:49 PM Re: Pentax 20x60 PCF WP II (Prisms undersized) oneaudiopro   06/10/08 08:52 PM Re: Pentax 20x60 PCF WP II (Prisms undersized) patter1   06/10/08 10:32 PM Re: Pentax 20x60 PCF WP II (Prisms undersized) oneaudiopro   06/10/08 11:23 PM Re: Pentax 20x60 PCF WP II (Prisms undersized) EdZ   06/11/08 01:07 PM Re: Pentax 20x60 PCF WP II (Prisms undersized) hallelujah   06/11/08 08:54 PM Re: Pentax 20x60 PCF WP II (Prisms undersized) KennyJ   06/11/08 01:15 PM Re: Pentax 20x60 PCF WP II (Prisms undersized) hallelujah   06/11/08 09:01 PM Re: Pentax 20x60 PCF WP II (Prisms undersized) EdZ   06/11/08 10:30 PM Re: Pentax 20x60 PCF WP II (Prisms undersized) mttafire   06/12/08 03:29 PM Re: Pentax 20x60 PCF WP II (Prisms undersized) EdZ   06/12/08 03:52 PM Re: Pentax 20x60 PCF WP II (Prisms undersized) Vincent33   06/13/08 05:46 AM Re: Pentax 20x60 PCF WP II (Prisms undersized) EdZ   06/13/08 09:29 AM Re: Pentax 20x60 PCF WP II (Prisms undersized) hallelujah   06/13/08 08:59 PM Re: Pentax 20x60 PCF WP II (Prisms undersized) EdZ   06/14/08 05:19 AM Re: Pentax 20x60 PCF WP II (Prisms undersized) EdZ   06/18/08 02:18 PM Re: Pentax 20x60 PCF WP II (Prisms undersized) AV in CMH   06/20/08 01:30 PM Re: Pentax 20x60 PCF WP II (Prisms undersized) Dave Hederich   06/30/08 06:57 PM Re: Pentax 20x60 PCF WP II (Prisms undersized) charen   06/30/08 07:36 PM Re: Pentax 20x60 PCF WP II (Prisms undersized) GlennLeDrew   06/30/08 08:00 PM Re: Pentax 20x60 PCF WP II (Prisms undersized) EdZ   07/21/08 10:54 AM Re: Pentax 20x60 PCF WP II (Prisms undersized) AV in CMH   06/12/08 11:38 PM Re: Pentax 20x60 PCF WP II (Prisms undersized) KennyJ   06/13/08 01:54 AM Re: Pentax 20x60 PCF WP II (Prisms undersized) STEEL   06/13/08 03:59 AM Re: Pentax 20x60 PCF WP II (Prisms undersized) Vincent33   06/13/08 05:15 AM Re: Pentax 20x60 PCF WP II (Prisms undersized) STEEL   06/13/08 05:35 AM Re: Pentax 20x60 PCF WP II (Prisms undersized) EdZ   06/11/08 01:35 PM Re: Pentax 20x60 PCF WP II (Prisms undersized) EdZ   06/11/08 01:39 PM Re: Pentax 20x60 PCF WP II (Prisms undersized) BillC   06/10/08 02:44 PM Re: Pentax 20x60 PCF WP II (Prisms undersized) syed   06/07/08 03:16 PM Re: Pentax 20x60 PCF WP II (Prisms undersized) RichD   06/07/08 03:22 PM Extra information 11 registered and 23 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: 3129 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