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ENR CTIO Blanco 4-m 2017-03-16

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Date: 
Thursday, March 16, 2017
Telescope: 
CTIO Blanco 4-m
Submitter: 
Arjun Dey
Submitter Email: 
dey@noao.edu
Observer Support: 
Hernan Tirado
Night Assistant: 
Claudio Aguilera
Problems: 

A power glitch in the computer room during the afternoon caused all sorts of problems. The afternoon calibrations were not taken, and the very first image on sky failed and caused interlock errors. Hernan ended up restarting SISPI 3 times (I think). Once the system was back up and running, we had a 4MAPS failure. Together, these problems caused us to lose 45 min of on-sky observation time. We were on sky by 00:30ut, 12 min after 18-deg twilight, and had no further problems.

Comments: 

Excellent support provided by Hernan Tirado and David Rojas to recover from all the SISPI issues, and by Hernan and Claudio during the night. Very nice night, once we got going! 

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
1.10
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky : 
0
2nd Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
1.00
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
3rd Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
0.90
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
4th Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
1.10
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
Program: 
Proposal: 
2014B-0404
Target of Oportunity: 
No
Time Observed: 
8.75
Time Engineering: 
0.0
Time lost technical: 
0.75
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
DECaLS
Primary Investigator: 
Schlegel
Email: 
DJSchlegel@lbl.gov
Institution: 
Lawrence Berkeley National Laboratory
Instrument: 
CTIO 4m DECam
Organization: 
NOAO
Total Program Time: 
9.5
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2017-03-16 8.75 0.0 0.75 0.0 0.0 9.5