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ENR CTIO Blanco 4-m 2014-04-20

Date: 
Sunday, April 20, 2014
Telescope: 
CTIO Blanco 4-m
Submitter: 
Rhiannon Griffin
Submitter Email: 
rhiannong@gmail.com
Observer Support: 
Leonardo Paredes
Night Assistant: 
Claudio Aguilera
Problems: 

The digitizing step took longer than usual for image taken tonight, making the process from 1 exposure to the next last 3-4 times longer than normal (assuming normal read out of ~30 s, so for tonight read out ~1.5-2 min). Server1 performed an unscheduled systems check in the evening and this was blamed for the delay.  I was told the check would last ~5 hours then the read out time would return to normal but I noticed the read out delay all night.  Also, because of this, we got started 20 minutes late.  Total time lost: approximately 3 hours, 20 minutes. 

The digitizing step worked properly for the second to last image of the night.  And then went back to delay for the last image.

Clear skies, albeit a bit hazy, with light winds all night.

Comments: 

Described above.

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
0.80
Seeing Variability: 
0.4
Seeing Source: 
CTIO Seeing monitor
Sky : 
0
2nd Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
0.78
Seeing Variability: 
0.4
Seeing Source: 
CTIO Seeing monitor
Sky: 
0
3rd Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
0.89
Seeing Variability: 
0.6
Seeing Source: 
CTIO Seeing monitor
Sky: 
0
4th Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
0.88
Seeing Variability: 
0.4
Seeing Source: 
CTIO Seeing monitor
Sky: 
0
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Program: 
Proposal: 
2014A-0306
Target of Oportunity: 
No
Time Observed: 
7.0
Time Engineering: 
0.0
Time lost technical: 
3.25
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
Redshift measurements of galaxy clusters from Swift Serindipitous Cluster Survey
Primary Investigator: 
Xinyu Dai
Email: 
xdai@ou.edu [1]
Institution: 
University of Oklahoma
Instrument: 
CTIO 4m DECam
Organization: 
N/A
Total Program Time: 
10.25
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2014-04-20 7.0 0.0 3.25 0.0 0.0 10.25
Source URL (modified on 04/21/2014 - 07:23): http://www.ctio.noao.edu/noao/node/5461

Links
[1] mailto:xdai@ou.edu
[2] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/1503/delete?destination=print/content/enr-ctio-blanco-4-m-2014-04-20
[3] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/1503/edit?destination=print/content/enr-ctio-blanco-4-m-2014-04-20
[4] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/add/node/5461?destination=print/content/enr-ctio-blanco-4-m-2014-04-20