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Re: Alternatives to Drift Alignment?



Chris L Peterson wrote:
> Sorry, I meant 5 arcminute- just confused myself using "arcsecond"
> earlier in the same sentence <g>. Field rotation will be negligible
> for typical exposure times if the polar alignment error is only 5
> arcminutes (Andrea used the symbol, and it is her assertion I am
> disagreeing with).

You're right--Andrea used the symbol.  I thought he had just copied it
from you, but in looking over your post, you did write it out.

What do you consider a typical exposure time?  I guess the amount of
field rotation also depends on how far the target is from the pole.

Brian Tung <[EMAIL PROTECTED]>
The Astronomy Corner at http://astro.isi.edu/
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