Subject: Re: [sdss3-25mlog 67] 2.5m obslog 20110331 (MJD 55652)
From: Kaike Pan
Date: Fri, 1 Apr 2011 09:08:22 -0600
On Apr 1, 2011, at 6:07 AM, asimmons@apo.nmsu.edu wrote:
>=20
>                       APACHE POINT OBSERVATORY SDSS 2.5M
>=20
>                                 OBSERVING LOG
>                          Thursday March 31, 2011
>=20
>                                  (MJD 55652)
>=20
> ----  Observing Team ----
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> Daniel Oravetz
> Audrey Simmons
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> ---- Observing Summary ----
>=20
>=20
> We lost some science time due to hartmanns failing on numerous =
occasions.
>=20
> We adjusted b1 by +11 degrees at the beginning of the night (it was =
much warmer=20
> tonight) and at the end of the night we needed to adjust it back by =
-11 degrees,=20
> when the temperature only changed by a few degrees. The camera was =
basically in=20
> focus all observations in between.
  Yes, there is some inconsistence at beginnings of nights =
(spectrographs are not in equilibrium?).
But overall, the relationship is okay. In last night case, when =
collimations is checked, temperature
was at ~14C, it asked for +11 degrees. Temperature dropped to 10~ C at =
the time of gotoField for
the first cartridge of the night. At that time, b1 ring asked for -1 =
degree adjustment. We had problem
on gotoField of cartridge 14, at that time temperature was + 7C.  The =
temperature change was only
about 3C during the night, but it was 7C from the time when collimation =
was checked to the morning.
Dan and Audrey did fellowed the current procedure last night.  I think =
we should consider to add one=20
more step in the procedure. During the twilight, we check collimation =
again, make sure that required=20
b1 adjustment is 3 to 6 degree.=20
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> Another problem: We filed a ticket #1266 relating to inconsistencies =
with failed=20
> hartmanns.
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> Another problem: Once we came across a hartmann sequence that failed =
and gave no=20
> reason for it. A timeout issue? See problem section.
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   I think that we may still have timeout issue. Thanks to Elena who =
write the logFun script. Please
run the script during observations, monitor BOSS status window, make =
sure two things: collimator
motors get to their destinations, and all calibrations was taken, decide =
what the nest step should be.
I found in most cases, we have anything (failed for no reason), we just =
need to start guider. Hope it
can fixed. Currently, we just need to carefully monitor logFun window =
and BOSS status during=20
gotoField.
 =20=