(Shneor Sherman) wrote in message . com...
(Jon Isaacs) wrote in message ...
My experience with Burgess has been excellent value for the money. But
I do wonder about the optical characteristics of this eyepiece.

Clear skies,
Shneor Sherman

Probably best to take the wait and see attitude if something isn't currently
yet available. Burgess Optical has been somewhat optimistic in the past about
delivery dates...

Jon

Here's some more info from Bill Burgess: It's a 7-element design, all
ED glass,"broadband multicoatings on all air-to-glass surfaces", and
pinpoint stars to the edge down to f/3.5. Availability is at least 60
days out.

The part about pinpoint stars to the edge of a 90° apparent field 29mm
eyepiece sounds very attractive. Maybe some of our eyepiece design
mavens can tell us why this is either impossible or comes at the price
of field curvature, loss of contrast or some other desirable optical
characteristic. Or not.

So, all you have to wonder about a
-distortion
-lateral colour
Like most widefields.
-Rich

-Rich