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Thanks guys, reall appreciate the help! I am travelling to New York soon, and was thinking that the Denk Big Easy might be a good idea.
I read somewhere that with UWA EPs you cant go longer than 25mm focal lengths. Is this true?

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Even in the denk, the maximum UWA you could use without getting vignette would be a 19mm. Everything larger than that will vignette and will not show any wider fov than a 19mm.

Eyepiece FS Diameters for Binoviewers

here's a guide chart


Also read this to help clear up any confusion about the actual aperture of most of the binoviewers on the market, including the Denks.


What they are sold as
Burgess C 20
Stellervue B3 22
Denkmeier Big Easy or Standard 26

Actual Exit aperture
Burgess C 20
Stellervue B3 20
Denkmeier Big Easy or Standard 25.4

A broad selection of other entry level binoviewers on the market under a wide variety of names is the same body as the Burgess C and the Stellervue B3.

Binoviewers and Clear Aperture
If selecting one of the 20mm CA binoviewers on the market, not only is there a light loss at the outer edges of the field stops, but also the Maximum True Field of View that you can get will be restricted to eyepieces with field stops about 22-23mm max.




edz

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Edited by EdZ (05/19/08 12:49 PM)

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