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ENR CTIO Blanco 4-m 2014-06-18

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Date: 
Wednesday, June 18, 2014
Telescope: 
CTIO Blanco 4-m
Submitter: 
Will Clarkson
Submitter Email: 
wiclarks@umich.edu
Observer Support: 
Kathy Vivas
Night Assistant: 
Claudio Aguilera
Problems: 

1. SISPI Interlock "broken" at 03:20am local time, image 326291 missing. Action taken: in observer console --> system control --> reset --> Go . This caused the sequence of exposures to resume. 

2. Pipeline became noticeably slower after this event. Before, a sequence of 24 images took 13 minutes to conduct (judging by file-creation dates). After, the same sequence took closer to 23 minutes. Guiding was not engaged since all exposures were less than or equal to 30 seconds. 

Because of variable thin cloud, only the short exposures in the survey program were conducted during this night, leading to a high number of images (1072 non-calibration images in total were taken during this night). I do not know if the high volume caused item #1 then #2 above.

Comments: 

RASICAM's pointing-overlay on the cloud map is extremely helpful in nights like this, since it allows some visual judgement of cloud presence in the direction the telescope is pointing. 

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Partially cloudy
Wind: 
Low
Seeing Value: 
0.90
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky : 
6
2nd Quarter
Clouds: 
Thin Clouds
Wind: 
Medium
Seeing Value: 
0.90
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
4
3rd Quarter
Clouds: 
Thin Clouds
Seeing Value: 
1.00
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
4
4th Quarter
Clouds: 
Thin Clouds
Wind: 
Low
Seeing Value: 
0.90
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
4
Program: 
Proposal: 
2014A-0480
Target of Oportunity: 
No
Time Observed: 
11.5
Time Engineering: 
0.0
Time lost technical: 
0.0
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
Total Program Time: 
11.5
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2014-06-18 11.5 0.0 0.0 0.0 0.0 11.5