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Subject: Re: [M]: 1616 and F/3.3 focal reducer
From: Andy Wallace
Reply To: mapug@shore.net
Date: Thu Apr 29 05:49:34 1999
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While you're here, how about checking out the
Astronomy Book
List ? |
Ralph--
Incredible field of view for CCD. Maybe someday these big chip cameras
will be more affordable.
Andy
"Ralph P. Pass III" wrote:
>
> I finally got an opportunity to use a 1616 with the new F/3.3 focal reducer on an
> F/6.3 telescope. I had to wait out some clouds and the images are not 'great' but
> it shows what can be done with this setup.
>
> I will post a more detailed report later, however, you can see the two images I
> took on my web site under the deep sky selection.
>
> http://rppass.com
>
> I will say that those images show that I need to improve my technique for getting
> flat fields: this setup is very sensitive to having a good flat field (and I tried
> twice no less to get a good one).
>
> The field of view is about 1.5 x 1 degrees with the scope running at F/2 (a 10" f/2
> system, not bad).
>
> Ralph
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