Subject: 3.5m Night Log 20211125
From: ajt@apo.nmsu.edu
Date: Fri, 26 Nov 2021 12:53:53 +0000 (UTC)
                      Apache Point Observatory
                      3.5m Telescope Night Log
                      Thursday, November 25, 2021
PROG  PI ASTRONOMER      OBSERVER(S)
--------------------------------------------------------------------
GS03  D.Gies            K.Shepard
BY02  B.Boizelle        B.Boizelle
CU01  W.Waalkes         J.Libby-Roberts
                         ON-SKY
PROG  INSTRUMENT     START   FINISH
--------------------------------------------------------------------
GS03  ECHELLE        17:07   21:07
BY02  TSPEC          --:--   --:--
CU01  ARCTIC         --:--   --:--
   PROG       SCHEDULED      WEATH     EQUIP     OBS     NOT USED
 I/ROW/DTN  START  FINISH   D    B    D    B    D    B    D    B
-----------------------------------------------------------------
GS03/R      17:07  22:40   1.2  0.4   0    0   4.0  0.0   0    0
BY02/R      22:40  00:10    0   1.5   0    0   0.0  0.0   0    0
CU01/R      00:10  06:35    0   6.4   0    0   0.0  0.0   0    0
note: scheduled times listed include instrument change time
              ------------- ACTIVITY LOG --------------
Observing Specialist: A.Townsend
Humidity was high during afternoon checkouts (with a little fog) but improved before sunset, so we were able to open for a few hours. Around 21:00 we reached the dewpoint closure limit again and were unable to open again for the rest of the night.
Tertiary rotation error moving to NA2 from NA1 ("?LMSTOP clamp failed to fully close\""). I tried a move to TR2 instead (successfully) and then to NA2, which worked.
We gave up at 05:20 since the CU02 observer was trying to observe a transit.
Parked the telescope at alt=20 since the temperature was  1u per 0.1 cubic feet.
              ----------  TELESCOPE SOFTWARE  ----------
Current TCC version: 1.4.2
Current HUB version: v20171231_01
Current TUI version: 2.6.0