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ENR CTIO Blanco 4-m 2013-06-04

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Date: 
Tuesday, June 4, 2013
Telescope: 
CTIO Blanco 4-m
Submitter: 
R. Michael Rich
Submitter Email: 
rmr@astro.ucla.edu
Observer Support: 
Mauricio Rojas
Night Assistant: 
Claudio Aguilera
Also Present: 
A. Kunder (by Polycomm)
Problems: 

Failure of mirror bag system causes jumps in tracking, leding to dramatic loss of guiding.  Huge excrusions in the DECam guide box;
trails and multiple images on frames.  Began as subtle effect with intermittent loss of guiding; progressed to much worse.
Night crew was able to recover but we were advised after 3rd occurrence that the telescope would have to be safed for the night;
this did nappen.

Comments: 

Guider problem as described above.  Occasional failure to set up guide stars in some fields.

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Clear
Seeing Value: 
1.00
Seeing Variability: 
0
Seeing Source: 
The Telescope I used
Sky : 
0
2nd Quarter
Clouds: 
Clear
Seeing Value: 
1.00
Seeing Variability: 
0
Seeing Source: 
The Telescope I used
Sky: 
0
3rd Quarter
Clouds: 
Clear
Seeing Value: 
1.00
Seeing Variability: 
0
Seeing Source: 
The Telescope I used
Sky: 
0
4th Quarter
Clouds: 
Clear
Seeing Value: 
1.00
Seeing Variability: 
0
Seeing Source: 
CTIO Seeing monitor
Sky: 
0
Program: 
Proposal: 
2013A-0529
Target of Oportunity: 
No
Time Observed: 
8.0
Time Engineering: 
0.0
Time lost technical: 
3.5
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
Blanco DECam Bulge Survey
Primary Investigator: 
R. Michael Rich
Email: 
rmr@astro.ucla.edu
Institution: 
UCLA
Instrument: 
CTIO 4m DECam
Organization: 
NOAO
Total Program Time: 
11.5
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2013-06-04 8.0 0.0 3.5 0.0 0.0 11.5