Re: [APML] st-4 looses guidestar

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

Hmmmm, seems to happen always with polar or southern targets; right where
the jet traffic lanes are for my area. Is this possible?
Bobby Middleton


----- Original Message -----
From: Ted Agos
> I have on occasion seen, while setting up satallites passing through the
field of view , this could could be the problem. Or even a passing hi thin
cloud could do it . As they say !!!! happens.
> Regards
> TED
>
> Ted Agos
> Acorn Hollow Obs.
> Sutton Ma.
> tagos@holycross.edu
> ASTRO Home page
> http://carver.holycross.edu/~tagos/astro.htm
> WEATHER LINKS
> http://carver.holycross.edu/~tagos/
>
> >>> bobm@koyote.com 04/05/00 08:27AM >>>
> 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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