Subject: Re: [sloan-25mlog 3811] 2.5m obslog 20171223 (SJD 58111)
From: Renbin Yan
Date: Sun, 24 Dec 2017 11:30:38 -0500
Hi Gordon and Dmitry,=20
On Dec 24, 2017, at 8:00 AM, gfreischlad@apo.nmsu.edu wrote:
> 2. During cart 4(plate 8722) observations petal #2 stopped responding. =
We waited
> to the end of exposure 257816 and fixed it quickly (see log) and were =
able to
> continue observations and still create a set. However, we don't know =
if that
> exposure is any good after exposing without guiding for ~10 min. Manga =
team
> please check this exposure, mark as bad if appropriate, and let us =
know if we
> need to patch tomorrow.=20
> We used less than 5min fixing the petal so if the exposure isn't bad =
then no
> significant time lost.
Thanks for alerting us of this. It seems this exposure only got 3 minute =
of guiding. For the=20
remaining 12 minutes, we have no guider exposures available. So, we have =
no easy way
to tell whether the tracking was accurate enough for this dither, or =
what is the average seeing
for this exposure. Given the lack of information, I think we have to =
declare it as Bad. I have
marked it as such in DOS. We need to patch it accordingly tomorrow.=20
Somehow this info is not propagated correctly to plateDB. We will figure =
it out and hopefully
fix this in the DB by tonight.=20
best,
-renbin
--
Renbin Yan
Assistant Professor
Department of Physics and Astronomy
177 Chemistry-Physics Building
University of Kentucky
Lexington, KY, 40506-0055
(1) 859-257-0795