Re: [APML] st-4 acting up

["Jim Janusz" <jjanusz@dc.rr.com>]

Hi Bobby,

My best guess is that you overwhelmed the cooler in the ST-4.  It seems like
it took a long time to get down to temperature and then started working.

Just a guess....

Jim
----- Original Message ----- 
From: "Bobby Middleton" <bobm@koyote.com>
To: "Discussion of Film Astrophotography" <astro-photo@seds.org>
Sent: Wednesday, July 14, 2004 8:03 PM
Subject: [APML] st-4 acting up


> It looks like my st-4 is needing several dark frames to settle down where
it
> can make true readings. This is after a 30 min+ start-up. It's warm here
in
> TX (90 deg at sundown) if that has anything to do with it. It's never been
a
> problem before during the heat.
> Anybody seen this behavior and can you tell me what's going on?
> I had this problem the other night and finally got it settled down where
it
> worked OK all night. I took 3-4 dark frames tonight beforte it settled
down
> to good readings.
> Bobby Middleton
>
>
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