Re: [APML] Visual on C/2001 Q4 (NEAT)...

["Bobby Middleton" <bobm@koyote.com>]

3 minutes might be acceptable at f/2.8. I have never had much luck trying to
get a st-4 to guide on a comet. Maybe manual guiding would be more
practicle.
Thanks Wade,
Bobby

----- Original Message ----- 
From: "Thomas W. Earle" <twade@bmi.net>
To: "'Discussion of Film Astrophotography'" <astro-photo@seds.org>
Sent: Tuesday, May 04, 2004 9:34 PM
Subject: RE: [APML] Visual on C/2001 Q4 (NEAT)...


> Bobby,
>
> Oops, I miscalculated on the guiding tolerance for a 165 mm lens.
> It should be around 31" so you might be able to squeeze out 3
> minutes, assuming the comet is moving 12.5" per minute.
>
> Wade
>
>
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