[APML] RC Field Flattener and AP Telecompressor

["Mike Cook, AF9Y" <mwcook@concentric.net>]

Maybe we could add a telecompressor with field flattening for the AP 130 F/6.
The AP telecompressor does not even provide good field coverage for the
ST-10 (1/4 of 35mm field) with off-axis astigmatism very evident at the corners.
I would throw in $500 for the effort to produce a 0.75x telecompressor that
could obtain good field coverage for at least the ST-10.

Mike Cook, AF9Y


From:           	Gil Shillcutt <astrocycle@yahoo.com>
Matt, 
Thanks for responding. I hadn't thought about Mr. Ceravolo. I'll give him a shout. 
I've had someexpressed interest in providing quotes for this work already from the scope's 
manufacturer, but that's not panning out. I guess either they're too busy, or perhaps I'm just kicking 
the tires. 
Does anyone know if Dave Rowe or Robert Bickel might be interested in helping? 
-- Gil 
 Matt BenDaniel <matt@starmatt.com> wrote: 
Date: Mon, 05 Nov 2001 21:55:07 -0500
To: astro-photo@seds.org
From: Matt BenDaniel 
Subject: Re: [APML] RC Field Flattener
Reply-to: astro-photo@seds.org

Gil,

Peter Ceravolo ceravolo@cyanogen.com does very high quality work and costs a pretty 
penny.

Matt

At 06:37 PM 11/5/2001 -0800, Gil Shillcutt wrote:

>I've recently acquired a RC scope (optics by Paul Jones), and thought I might try my hand 
at medium format. The scope shows some curvature of field at the corners of a 35mm 
frame, so will definitely need a field flattener to do decent medium format. I've not been able 
to evaluate the optics for astigmatism, though that may need to be corrected as well. 
>
>Does anyone know of an optical designer/fabricator that I might be able to work with to 
design an appropriate corrector?
>
>Thanks,
>
>-- Gil


Mike Cook, AF9Y
http://www.webcom.com/af9y
mwcook@cris.com




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