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ENR CTIO Blanco 4-m 2016-07-23

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Date: 
Saturday, July 23, 2016
Telescope: 
CTIO Blanco 4-m
Submitter: 
Alistair Walker
Submitter Email: 
Observer Support: 
Rodrigo Hernandez
Night Assistant: 
Claudio Aguilera
Also Present: 
Humberto Orrego, Adam Bolton
Problems: 

(i) Recovering from DECam ICS stoppage at 4.20 pm meant we started 20 min late

(ii) Dome encoder lost communication to the TCS, lost 45 min rebooting computers etc.  JIRA written.

Comments: 

No afternoon calibrations taken due to DECam ICS failures.  Thanks to Humberto and Rodrigo for leading the revival.   CCD temperaturee stable by 0100 UT.  Apparent vapor lock on the LN2 supply side of the Imager clared at the time of the dome shutters being opened.  If the LN2 pump needs to be restarted iat any time in the future, best to have the telescope at the NW platform and not at the zenith.  

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Cirrus
Wind: 
Medium
Seeing Value: 
1.50
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky : 
3
2nd Quarter
Clouds: 
Cirrus
Wind: 
High
Seeing Value: 
1.30
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
2
3rd Quarter
Clouds: 
Cirrus
Wind: 
High
Seeing Value: 
1.00
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky: 
2
4th Quarter
Clouds: 
Cirrus
Wind: 
High
Seeing Value: 
0.90
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
3
Program: 
Proposal: 
2016A-0190
Target of Oportunity: 
No
Time Observed: 
11.0
Time Engineering: 
0.0
Time lost technical: 
1.0
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
DECam Legacy Survey Extension
Primary Investigator: 
Arjun Dey
Institution: 
NOAO
Instrument: 
CTIO 4m DECam
Organization: 
NOAO
Total Program Time: 
12
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2016-07-23 11.0 0.0 1.0 0.0 0.0 12