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ENR CTIO Blanco 4-m 2015-12-26

Date: 
Saturday, December 26, 2015
Telescope: 
CTIO Blanco 4-m
Submitter: 
David James
Submitter Email: 
djj@ctio.noao.edu
Observer Support: 
None
Night Assistant: 
Claudio Aguilera
Also Present: 
Hernan Tirado, Carlos Corco, Humberto Orrega
Problems: 

00:31 local: After long slew from high airmass toward low mass, telescope brakes activated (and 4MAP failed at the same time --> causal ?). Intervention by T.O.s didn't work as normal, so they had to go upstairs and clean the tachometers. After this action, they recovered control of the TCS and I was able to continue observing. Time lost = 35-minutes.

 

DECal machine "failure" at 05:05 caused SISPI to fall over. Three minutes lost rebooting DECalS machine.

 

 

Comments: 

Apart from the small incident just past-midnight, 'twas a very smooth, stable Tololo night. We were accompanied by Mademoiselle Lune all night, but working in the z-filter, we were not too troubled by her brilliance. 

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
1.00
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: 
1.00
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
4th Quarter
Clouds: 
Clear
Seeing Value: 
0.90
Seeing Source: 
The Telescope I used
Sky: 
0
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Program: 
Proposal: 
2012B-0404
Target of Oportunity: 
No
Time Observed: 
6.75
Time Engineering: 
0.0
Time lost technical: 
0.5
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
The DECam Legacy Survey of the SDSS Equatorial Sky
Primary Investigator: 
David Schlegel/Arjun Dey
Institution: 
Lawrence Berkeley National Laboratory
Instrument: 
CTIO 4m DECam
Organization: 
NOAO
Total Program Time: 
7.25
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2015-12-26 6.75 0.0 0.5 0.0 0.0 7.25
Source URL (modified on 12/27/2015 - 05:47): http://www.ctio.noao.edu/noao/node/9073

Links
[1] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/2818/delete?destination=print/content/enr-ctio-blanco-4-m-2015-12-26
[2] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/2818/edit?destination=print/content/enr-ctio-blanco-4-m-2015-12-26
[3] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/add/node/9073?destination=print/content/enr-ctio-blanco-4-m-2015-12-26