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 >> Eyepieces Previous   Index   Next   Flat   BillP Carpal Tunnel Reged: 11/26/06 Posts: 2212 Loc: Vienna, VA Re: Trying to "modify" baader hyperions, help!       08/06/08 06:29 PM Edit   Reply   Quote   Quick Reply:   I have used the FTRs on the 13, 8, and 5mm Hyperions to make each of them 10mm, 6mm, and 4mm respectively and if the AFOV or eye relief changed, it was not readily obvious. As far as adding the rings while in the field at night, I never had any problem...you just have to be careful to not drop anything while you have it apart of course (so a 3rd hand or a table top makes it a bit safer, but you can manage with just 2 hands and no place to put things down as well - the latter was the most often used method). My only caution would be that if you plan to add both the 14 and 28 FTRs to say the 13mm or shorter FL Hyperions, then you will end up which quite a large EP! So if ergonomics are a consideration then something to think about....I doubt with both FTRs on that they will fit in the typical tray under the tripod as they will be a bit long. Finally, I don't know about the longer FLs, but I felt that the 5mm Hyperion deteriorated some with the FTRs attached and off-axis CA was a bit more pronounced when the 5mm was pushed to 4mm. I don't recall this with the 13 or 8mm when the FTRs were attached. -------------------- 250mm f/4.7 Orion XT10i Dobsonian 102mm f/8.0 Tak TSA Super-APO 66mm f/5.9 WO ZenithStar SD APO 40mm f/10 Coronado P.S.T. Post Extras       Entire thread Subject Posted by Posted on Trying to "modify" baader hyperions, help! Brooklyn 08/06/08 01:23 AM Re: Trying to "modify" baader hyperions, help! BillP   08/06/08 06:29 PM Re: Trying to "modify" baader hyperions, help! Brooklyn   08/06/08 06:42 PM Re: Trying to "modify" baader hyperions, help! BillP   08/06/08 10:06 PM Re: Trying to "modify" baader hyperions, help! Brooklyn   08/06/08 11:10 PM Re: Trying to "modify" baader hyperions, help! BillP   08/06/08 11:32 PM Re: Trying to "modify" baader hyperions, help! Phillip Creed   08/07/08 09:10 AM Re: Trying to "modify" baader hyperions, help! Gaz O'C   08/08/08 12:33 PM Re: Trying to "modify" baader hyperions, help! Brooklyn   08/08/08 07:05 PM Re: Trying to "modify" baader hyperions, help! BillP   08/07/08 05:01 PM Re: Trying to "modify" baader hyperions, help! Brooklyn   08/07/08 06:39 PM Re: Trying to "modify" baader hyperions, help! BillP   08/07/08 09:37 PM Re: Trying to "modify" baader hyperions, help! Brooklyn   08/08/08 01:28 AM Re: Trying to "modify" baader hyperions, help! Lawrence Sayre   08/06/08 06:47 PM Re: Trying to "modify" baader hyperions, help! Brooklyn   08/06/08 07:08 PM Re: Trying to "modify" baader hyperions, help! Lawrence Sayre   08/06/08 07:26 PM Re: Trying to "modify" baader hyperions, help! NGC6144   08/06/08 06:59 PM Re: Trying to "modify" baader hyperions, help! Lawrence Sayre   08/06/08 07:21 PM Re: Trying to "modify" baader hyperions, help! Brooklyn   08/06/08 01:39 AM Re: Trying to "modify" baader hyperions, help! Wobrak   08/06/08 06:47 AM Re: Trying to "modify" baader hyperions, help! DSalters   08/06/08 01:41 PM Re: Trying to "modify" baader hyperions, help! Brooklyn   08/06/08 01:53 PM Re: Trying to "modify" baader hyperions, help! Lawrence Sayre   08/06/08 04:43 PM Re: Trying to "modify" baader hyperions, help! Brooklyn   08/06/08 05:42 PM Re: Trying to "modify" baader hyperions, help! Lawrence Sayre   08/06/08 05:48 PM Re: Trying to "modify" baader hyperions, help! Lawrence Sayre   08/06/08 01:40 PM Extra information 8 registered and 7 anonymous users are browsing this forum. 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