Re: [APML] st-4 looses guidestar

["August R. Orlandi" <walkabot@execpc.com>]

Sometimes,I think its the nature of the beast.
Also depends on how bright the star is and wind is a factor.
I have had this happen to me usally if the star is 15 or less as a value.
Other thing that could cause it are a weak battery,or some high cirrus.
Augie

Bobby Middleton wrote:

> I've had this a few times for no aparrent reason, but I'm inside the house
> catching naps between exposures so I really don't know if a small passing
> cloud might have been the culprit or not on the previous times. Last night
> when I arose from my naps to end exposures I found the st-4 beeping away on
> 2 of them with the guidestar being lost. On one I reset the find/focus and
> the star was still on the chip. Last night it was absolutly clear, so no
> passing clouds were a problem. My optics weren't dewed up at all. I've
> recently baked the dessicate ring (about December) so I think that is not a
> factor. Br readings were sensitive and consistant all night when I did
> set-ups; as well as were corrections: 2's-3's on average at 2200mm FL. This
> has happened more often as of late; anybody want to suggest possible causes?
> Bobby Middleton
>
>  http://www.koyote.com/users/bobm/word.htm
>
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