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Re: [APML] Epsilon astrographs

Hi Russ:
I'm not sure why a diagonal would be wanted here---the Epsilon design is a
hyperbolic newtonian. Or am I missing something? I have the 160 model
myself, but have not yet used it except for a few experimental photos.
Bert

Bert Katzung
San Rafael, CA
----- Original Message -----
From: "Russ Johnson" <rcj05@home.com>
To: <astro-photo@seds.org>
Sent: Thursday, 22 June, 2000 7:18 AM
Subject: Re: [APML] Epsilon astrographs


> DBogan3220@aol.com wrote:
>
<snip>
>
> Did I see somewhere that the back focus isn't enough to use a diagonal
> visually?
>
> RJ
>
>
>
>
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