Scott Root Posted May 3, 2009 Share #1 Posted May 3, 2009 Advertisement (gone after registration) I am thinking about purchasing a Visoflex III to graft onto my astro physics 105 Traveler telescope and 2.7" Prime Focus Field Flattener (67PF462). Results should be spectacular with the CCD and infrared capability of the M8 and the Visoflex with vertical viewer should work great for preview. This telescope setup requires exactly 3.4 inches between the flattener and the focal plane. Does anyone know if the visoflex III is shorter than this so I can custom build an adaptor? If more than 3.4 inches it will not work, of course. Quote Link to post Share on other sites More sharing options...
Advertisement Posted May 3, 2009 Posted May 3, 2009 Hi Scott Root, Take a look here Visoflex III specifications needed for telescope advise. I'm sure you'll find what you were looking for!
giordano Posted May 3, 2009 Share #2 Posted May 3, 2009 (edited) According to Camera Mounts Sorted by Register the Visoflex 2/3 is 40mm thick, plus 27.95mm for the M lens register making 67.95. Edited May 3, 2009 by giordano accuracy Quote Link to post Share on other sites More sharing options...
perb Posted May 3, 2009 Share #3 Posted May 3, 2009 According to Camera Mounts Sorted by Register the Visoflex 2/3 is 40mm thick, plus 27.95mm for the M lens register making 67.95. I measured the flange-to-flange distance on my Visoflex III and it is 36.5 mm. With the additional lens register as mentioned by giordano you should have over 20 mm to spare for your 3.4". I have the following sequence of adapters: M-to-M39 M39-to-M42 M42-to-T2 T2-to-2" The last one is a tube that fits a standard 2" astro focusser and it works very well on my TV-85, however I have not yet bought the field flattener. The M42 thread allows me to attach the M8+Visoflex to my microscopes. Regards Per Quote Link to post Share on other sites More sharing options...
Scott Root Posted May 3, 2009 Author Share #4 Posted May 3, 2009 This is great news and thanks to everyone for sharing these measurements. Astro Physics makes an EOS bayonet adaptor with large ID that is better than than the traditional threaded adaptor with narrower ID that tends to create vignetting. The EOS bayonet is ideal if I can find an adaptor to put EOS lenses on a Visoflex III. Does such an adaptor exist? I measured the flange-to-flange distance on my Visoflex III and it is 36.5 mm. With the additional lens register as mentioned by giordano you should have over 20 mm to spare for your 3.4". I have the following sequence of adapters: M-to-M39 M39-to-M42 M42-to-T2 T2-to-2" The last one is a tube that fits a standard 2" astro focusser and it works very well on my TV-85, however I have not yet bought the field flattener. The M42 thread allows me to attach the M8+Visoflex to my microscopes. Regards Per Quote Link to post Share on other sites More sharing options...
perb Posted May 3, 2009 Share #5 Posted May 3, 2009 This is great news and thanks to everyone for sharing these measurements. Astro Physics makes an EOS bayonet adaptor with large ID that is better than than the traditional threaded adaptor with narrower ID that tends to create vignetting. The EOS bayonet is ideal if I can find an adaptor to put EOS lenses on a Visoflex III. Does such an adaptor exist? I got my adapters from SRB~Griturn Ltd and they have loads on the shelf, but they can also make anything you want. Regards Per Quote Link to post Share on other sites More sharing options...
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