Re: [APML] 2 More ST-4 questions

["Chris Cook" <ccjd@ix.netcom.com>]

Hi Joe -
There is no difference.
You're right in that once turned on, the chip is being cooled, tracking or
idle.

Chris

----------------------------------
Chris Cook
Astronomical & Nightscape Photography
www.abmedia.com/astro

-----Original Message-----
From: Joseph Schaefer <schaefer@htva.net>
To: Discussion of Film Astrophotography <astro-photo@seds.org>
Date: Saturday, April 26, 2003 4:37 PM
Subject: Re: [APML] 2 More ST-4 questions


>Hi Chris,
> I don't understand the difference between running the ST-4 for 4-8 hours
or
>4-8 hours plus 10 minutes.
>The only way I know to not cool the CCD ship is to power down the unit. I
>think (I know I shouldn't hurt myself)
> the chip is being cooled if the unit is tracking or in standby (or as long
>as power is applied).
>I have been using my ST-4 for over three years and I am also interested in
>what SBIG has to say.
>Thanks,
>Joe Schaefer
>
>
>----- Original Message -----
>From: "Chris Cook" <ccjd@ix.netcom.com>
>To: "Discussion of Film Astrophotography" <astro-photo@seds.org>
>Sent: Saturday, April 26, 2003 3:25 PM
>Subject: Re: [APML] 2 More ST-4 questions
>
>
>> At the end of a nights shooting (4-8hrs), I don't immediately power down
>the
>> ST-4.  Its usually on for about 5-10 minutes after I finish with the last
>> exposure, during which I start covering up the scope, cameras etc.... I
>> never intended it or thought of it as a thermal shutdown.
>> Let us know what SBIG says.
>>
>> Chris
>>
>> ----------------------------------
>> Chris Cook
>> Astronomical & Nightscape Photography
>> www.abmedia.com/astro
>>
>> -----Original Message-----
>> From: Alan Voetsch <critter12952@yahoo.com>
>> To: Discussion of Film Astrophotography <astro-photo@seds.org>
>> Date: Saturday, April 26, 2003 3:05 PM
>> Subject: Re: [APML] 2 More ST-4 questions
>>
>>
>> >Hi Chris,
>> >
>> >--- Chris Cook <ccjd@ix.netcom.com> wrote:
>> >> You just unplug it from your power supply.  Don't unplug the power
>> >> cable
>> >> from the unit itself while on.  There is no thermal shutdown
>> >> procedure.
>> >> Always have all the cables pluged into the unit box before power up.
>> >
>> >I feel comfortable enough about connecting, operating, and using the
>> >ST-4. Other than the thermal shutdown thing. I don't think I'll have
>> >any problems with it. But, I'm not going to use it until I hear from
>> >SBIG about thermal shutdown, and/or the cold, miserable, damp, cloudy
>> >weather moves somewhere else. This has been one of the coldest, wettest
>> >Aprils on record, and it sucks.
>> >
>> >Thanks,
>> >Alan
>> >
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