Subject: Re: [sdss3-25mlog 467] 2.5m obslog 20120117 (MJD 55944)
From: Kaike Pan
Date: Wed, 18 Jan 2012 08:38:33 -0700
On Jan 18, 2012, at 6:09 AM, hjbrew@apo.nmsu.edu wrote:
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>                       APACHE POINT OBSERVATORY SDSS 2.5M
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>                                 OBSERVING LOG
>                          Tuesday January 17, 2012
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>                                  (MJD 55944)
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> ----  Observing Team ----
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> Dmitry Bizyaev=20
> Howard Brewington
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> ---- Observing Plan ----
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> 17 Jan 2012  55944.0  0.36  01:48 12:39  02:32 13:25  BOSS  10.9 hours
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> ---- Observing Summary ----
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> The sky was photometric; seeing was a bit variable.
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> Observed:
> ---------
> Cart 12, 4393, BOSS   DONE
> Cart 10, 4398, BOSS  =20
> Cart 18, 5697, BOSS   DONE
> Cart 13, 3647, BOSS=20
> Cart 15, 5149, BOSS   DONE
> Cart 14, 4639, BOSS   DONE
> Cart 11, 4872, BOSS   DONE
> Cart 17, 4768, BOSS   DONE
> Cart 16, 5397, BOSS   DONE
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> We lost about 25 minutes on cart 16 because we had to run collimate =
twice and
> then adjust XMID for sp2.
Looks like something happened recently on this cartridge. XMIDs offsets =
by 15 pixels
from its previous nominal values.  With the offsets, we can not put =
XMIDs of cart 16
within XMID yellow ranges. This says we will be enforced to adjust XMID =
EVERY night
if cart 16 is used.  I will work with Dan and French on this.
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> 08:20Z Started the APOGEE morningCals
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> Note to engCrew.
> Alt-01 motor had a very bad vibration while going to instChange for =
cart 10 and
> to the field for cart 18.
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> It took several tries to get the west door closed using the buttons. =
The buttons
> did not seem to be making contact.
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