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Subject: Re: [M]: Re: Polar Alignment Devices
From: Bill Arnett
Reply To: mapug@shore.net
Date: Wed Oct 08 00:16:55 1997

At 4:13 PM -0700 10/7/97, Emery Hildebrand wrote:
>... Maybe I've been lucky, but I have _never_
>drift aligned and I can't even remember the last photo that showed any
>signs of bad alignment...

But later you say you're guiding the photos so the only ill effects of
misalignment would be due to field rotation. You will get a little arc
instead of a point for each star. The radius of the arc will be determined
by the amount of misalignment and where in the sky you're pointing. (I'm
sure someone could calculate it, but not me :-) If the arc turns out to be
smaller than the blob that the seeing produces then you won't see it.

---
Bill Arnett billa@znet.com http://www.seds.org/billa/
"Science is a way of trying not to fool yourself." -- Richard Feynman





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