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Rob S
professor emeritus
Reged: 03/16/07
Posts: 502
Loc: NZ
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Re: Strange Results in Eyepiece FOV Comparisons
05/21/08 03:30 PM
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I was thinking about this this morning. Assuming the figures we see on the Tele Vue website for field stops are real dimensions, and not effective/virtual, when they decided to make the 8mm Ethos, would they have to start with the requesite sized hole in lets say a piece of metal, that gives a 100 degree AFOV (lets assume no distortion) for an 8mm focal length - and then build around that?
Regards,
Rob.
--------------------
8" f5 Dob with Feathertouch
Brandon: 16
Pentax: 7, 10 & 20XW
TMB: 30 Paragon
TV: 8 & 13 Ethos;
5 & 13 NaglerT6;
24 Panoptic
Leica Trinovid 8x50 BN
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