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

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

----- Original Message ----- 
From: "Geoff Powers" <astropix@att.net>

> > 5-10 min without trailing the comet?
>
>  Q4 is moving about 5 degrees per day in declination alone... any
significant focal length

Pentax 67 165mm; how significant is that?

> and/or exposure time will require tracking the comet itself to prevent
trailing.

What do you think time-wise with the Pentax 165? At f/2.8 I can get decent
density at 5 min.
Bobby



>
>  Best...
>
> --
>  Geoff
>
> http://home.att.net/~astropix/
>
>
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