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   Brooklyn scholastic sledgehammer Reged: 07/24/08 Posts: 870 Loc: Central New Jersey Trying to "modify" baader hyperions, help!       08/06/08 01:23 AM Edit   Reply   Quote   Quick Reply:   So I have a 5mm and 8mm baader hyperion eyepiece from optcorp on the way to my house. The 8mm will give me 250x, while the 5mm offering 400x (which ends up being my max at 50x per inch of aperture). I did some extensive research on these eyepieces and it turns out that you can change the focal length in different ways. http://www.alpineastro.com/Hyperion-Eyepieces_com/Images_and_Docs/HyperionandZoomInstructions-Version2.pdf By taking apart the baader hyperion eyepieces you can change the focal length and stop field in small or larger quantity depending on what you do. There is a 14mm FTR and 28mm FTR which can be used singularly or together. It will give even smaller focal lengths of a given eyepiece. For example I can take a 8mm baader hyperion and... with 14mm FTR: 6.0mm with 28mm FTR: 5.0mm using both FTR together: 4.3mm All this info and more can be seen on the chart from the link above. Do you think I made a mistake getting the 8mm AND 5mm? I ask this because I could have turned my 8mm into a 6, 5mm or even 4.3 using these two modification inserts. Has anyone here personally had any experience with these eyepieces and using the optional threads to mod them into different lengths? Is it worth modding the eyepiece? or does the performance suffer at all? I know some people have bought the ENTIRE baader hyperion set which leads me to believe that modding these eyepieces isn't such a good idea? Anyone with knowledge of this subject, educate us!! -------------------- Meade 8.25"(209.55mm) LX-90 EMC (SCT) Albert Einstein => “Intellectual growth should commence at birth and cease only at death.” “If you can't explain it simply, you don't understand it well enough.” 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 5 registered and 5 anonymous users are browsing this forum. 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