· 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 >> Binoviewers Previous   Index   Next   Threaded   Pages: 1 Hermit member Reged: 10/26/08 Posts: 49 Loc: Northern California Better focus method for individual eye diopter.       #2719710 - 10/26/08 10:01 PM Edit   Reply   Quote Quick Reply   Wow, the new Bahtinov focus mask I made works great! When I saw this on a forum, I grabbed the nearest cardboard (a priority mail box), and went after it. Yep, I usually wear glasses, but don't when I am observing so I can get the full field of view. My eyes don't need much correction, but diopter correction is different for each eye. I have a Denk II binoviewer that has individual diopter adjustment for each eye, but I had a lot of trouble using just an open scope or even a Hartmann mask to match the focus for each eye. With the diffraction spikes on the Bahtinov mask, I can just dial in the focus . . . so easy! Lots of info about this mask here on the Cloudy Nights forums here: Revolutionary new way of focusing! No less! I used the pattern generator here: Bahtinov Focusing Mask Generator Best regards, Rob Crockett -------------------- Meade LX90 LNT 8" Schmidt-Cassegrain Standard Wedge, LX90 fork, LX200 tripod Alan Gee II telecompressor f/5.6 Baader short 1.5cm T-adapter/T-ring Astronomik CLS-CCD clip filter Self modified Canon XSi with Baader UV/IR filter. Meade Model 277 60mm refractor with Orion SSAG Losmandy V-dovetails for balance and guide scope. Post Extras:       dvb different Syndrome. Reged: 06/18/05 Posts: 3022 Re: Better focus method for individual eye diopter. [Re: Hermit]       #2720805 - 10/27/08 01:56 PM Edit   Reply   Quote Quick Reply   A very nice piece of work, Rob! Welcome to Cloudy Nights. -------------------- "But seeing through a telescope is 50% vision and 50% imagination." - Chet Raymo Skywatcher 10" f/4.7 Newt on Matilda Celestron CF 9.25" Vixen CF 8" f/4 Newt Meade 8" SN f/4 Celestron C6 SCT Skywatcher ED100 Skywatcher ED80 EQ6 Pro "Matilda" AT Voyager Canon 15x50is Mallincam HyperColor Plus Post Extras:       Hermit member Reged: 10/26/08 Posts: 49 Loc: Northern California Re: Better focus method for individual eye diopter. [Re: dvb]       #2721904 - 10/27/08 11:59 PM Edit   Reply   Quote Quick Reply   Thanks! I'm absolutely loving having a binoviewer on my scope. The only difficulty has been tracking down some eye-to-eye disparity issues. The big one was having the eyepieces firmly fixed in place straight so that the images line up right. The other was difficulty with finding sharp focus . . . turned out to be a sligtht difference in focus between my two eyes, now resolved as well with this focus mask. Best regards, Rob Crockett -------------------- Meade LX90 LNT 8" Schmidt-Cassegrain Standard Wedge, LX90 fork, LX200 tripod Alan Gee II telecompressor f/5.6 Baader short 1.5cm T-adapter/T-ring Astronomik CLS-CCD clip filter Self modified Canon XSi with Baader UV/IR filter. Meade Model 277 60mm refractor with Orion SSAG Losmandy V-dovetails for balance and guide scope. Post Extras:       Pages: 1 Previous   Index   Next   Threaded   Extra information 0 registered and 2 anonymous users are browsing this forum. 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