Subject: 2.5m obslog 20080601 (MJD 54619)
Date: Mon,  2 Jun 2008 04:48:29 -0600 (MDT)
From: dmbiz@apo.nmsu.edu (Dmitry Bizyaev)
                       APACHE POINT OBSERVATORY SDSS 2.5M
                                 OBSERVING LOG
                              Sunday June  1, 2008
                                  (MJD 54619)
---=== OBSERVING TEAM ===---
Shannon Watters (observer)
Dmitry Bizyaev (observer)
---=== OBSERVING PLAN ===---
        Science!
---=== OBSERVING SUMMARY ===---
Mostly clear sky in the evening, but we noticed a lot of pine pollen
in the air and closed telescopes.
We started imager calibrations and completed Linearity or u 1,2,3, and 4.
We are leaving LN2 spectro dewar really low after fill at ~ 4:15 MST. Please
check it!
Please check the mirror for the pollen.
---=== OBSERVING LOG ===---
Partly clear sky in the evening with numerous scattered contrails.
We were concerned about pine pollin and opened later when pollen could be seen
in the light of flashlights.
02:20Z Dome opened; started ventilation
Cart. 3 plate 2927 is on (seguefaint)
 GSOGTF
After sunset we noticed growing pollen particles population in the air.
Cleaned windshield got noticeable layer of pollen. There are polen
particles in the air. We managed to close the telescope and dome.
It's a pity, seeing looks perfect, sky is mostly clear.
03:09Z dome closed.
We set up imager for calibrations.
---
run 7536
03:55Z bias fr.1
03:57Z  u 1 Linearity  fr. 2 --
        03:54Z MSP bias - Frame 1
---------------------
        02:37Z Linearity on u 1 w/ stageX = 2310
                First Frame - idR-7536-u1-2.fit
                        Last Frame - idR-7536-u1-21.fit
----------------
        05:56Z Linearity on u 2 w/ stageX = 11410
                First Frame - idR-7536-u2-22.fit
                Last Frame - idR-7536-u2-40.fit
---------------
        07:17Z Linearity on u 3 w/ stageX = 20510
                First Frame - idR-7536-u3-41.fit
Warning! too low flux on photodiode! aflux  0.   No change
Coll_motor_A 7285 01P0000007285
Coll_motor_B 7478 02P0000007478
Coll_motor_C 7585 01P0000007585
Coll_motor_A_status 133 01S0133
Coll_motor_B_status 133 02S0133
Coll_motor_C_status 133 01S0133
Temp_Median 16.4
Temp_Hartmann_Top 16.0 (0xFD64)
Temp_Red_Cam_Bot 16.1 (0xFD5E)
Temp_Red_Cam_Top 16.5 (0xFD4E)
Temp_Blue_Cam_Bot 16.3 (0xFD54)
Temp_Blue_Cam_Top 16.4 (0xFD53)
sp2> No change
Coll_motor_A 12016 01P0000012016
Coll_motor_B 11369 02P0000011369
Coll_motor_C 11552 01P0000011552
Coll_motor_A_status 133 01S0133
Coll_motor_B_status 133 02S0133
Coll_motor_C_status 133 01S0133
Temp_Median 14.4
Temp_Hartmann_Top 15.0 (0xFD8C)
Temp_Red_Cam_Bot 14.9 (0xFD90)
Temp_Red_Cam_Top 14.3 (0xFDA8)
Temp_Blue_Cam_Bot 14.0 (0xFDB4)
Temp_Blue_Cam_Top 14.4 (0xFDA4)
IDL 5.5a> collimate, 53186
Reading /data/spectro/54619/sdR-b1-00053186.fit
Reading /data/spectro/54619/sdR-b1-00053187.fit
 COLLIMATE: Min offset = -0.63 pix
 COLLIMATE: Max offset =  0.38 pix
 COLLIMATE: RMS across CCD =  0.25 pix
 COLLIMATE: Mean offset = -0.08 pix
 COLLIMATE: Camera b1 appears to be IN-FOCUS (|mean|  Focus 15.8C
sp2: (-147 - 900) ~ -1100 & T_sp2=14.4
==> Focus 15.5C
FOCUS SET TO ~15.5C
---- -----------------------------------------------
23:40Z id4 does not respond. Photo crates rebooted.
no gang transfer (19: 2008-06-02 00:24:21Z)
no gang transfer (19: 2008-06-02 00:26:19Z)
Teamster restarted
no gang transfer (19: 2008-06-02 00:29:29Z)
Teamster re-restarted
----
We got a message of secondary dewar pressure low at ~9:46Z.
We checked LN2 dewar and opened dewar valve wider. It started filling
after that.