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Subject: Re: [M]: 35mm astrophotography
From: Ric L Ecker
Reply To: mapug@shore.net
Date: Mon Jan 12 17:28:06 1998
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While you're here, how about checking out the
Astronomy Book
List ? |
>The Orion is a good choice. Another scope you might want to
>consider is the Takahashi FC-60. This is a fantastic little
>scope that you can use for imaging on its own. See Todd Gross'
>review on <http://www.weatherman.com/SCOPEWAR.HTM>, Part 3.
A friend uses the Orion 80 but he shooting at f/3.9 or faster. A
couple of others have used the Celestron SP 80 which looks the same but
switched to 4" 2045's. If you are shooting at f/6.3, you should guide at
the highest possible magnification as possible. Using a barlow makes a
lot of flexure on the 80, I would guide at least a 1:1 ratio, i.e.
1300mm guider and 1300 main to get good guiding accuracies.
ric http://members.aol.com/rlecker/optas.html
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