Re: [APML] 2 More ST-4 questions

[Alan Voetsch <critter12952@yahoo.com>]

Hi Steve,

--- steve banbury <banburys@sonic.net> wrote:
> There is only one power connection--what would you do different?
> I've never done anything else either, but then I've only had my ST4
> for 10
> years. Maybe some other autoguiders are more picky about how you 
operate them.

I won't pretend to be an expert on this subject (or most others
either), but I know the Meade guiders have a thermal shutdown routine.
The SBIG cameras have an automatic routine when you disconnect from the
operating software (CCDOps, CCDSoft, etc...). The Meades take about a
minute, SBIGs 15-30 seconds. To the best of my knowledge, the
explanation is that the chips need to return to ambient temperature
before voltage removal. If you've used it for ten years, then I think
we can assume that a thermal shutdown, for whatever reason, is
irrelevant. But I do want to know why. That's why I've already e-mailed
SBIG asking for an explanation.

Alan

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