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CTIO Home > ENR CTIO Blanco 4-m 2013-04-18

ENR CTIO Blanco 4-m 2013-04-18

Date: 
Thursday, April 18, 2013
Telescope: 
CTIO Blanco 4-m
Submitter: 
David Herrera
Submitter Email: 
herrera@noao.edu
Observer Support: 
Hernan Tirado
Night Assistant: 
Claudio Aguilera
Also Present: 
C. Fuentes, J. Rajagopal , A. Earle
Problems: 

The beginning of the night (until 23:00) was lost due to 8 CCDs that were looking bad early in the day, very likely due to a overheating of MONSOON 3 that was over 34C during last night and then went all the way to 55C in the morning.

Initially these 8 CCDs were showing saturation. It was determined after great job from H. Tirado, J. Rojas and the team down in La Serena, that the controllers for this crate (MONSOON 3) were bad, not the CCDs, so it was better to turn this crate off and try to fix it up next morning, loosing so power to additional 9 CCDs, which required a great effort and dedication from the electronics and technical team. Therefore, CCDs  N13, N12, N11, N19, N19, N18, N17, N16, N24, N23, N22, N21, N28, N27, N26, N31, N30, N29 are not going to show up at all in this night data, covering then 2/3 of its usual area. Alarms were modified as well not to stop observations due to this. Similarly, the focus/donut CCDs were off, so we needed to calculate focus by hand, which for our project is not too critical. The guider CCds were working OK, and everything else did so through the rest of the night.

Comments: 

None.

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Clear
Wind: 
Medium
Seeing Value: 
0.00
Seeing Variability: 
0
Seeing Source: 
The Telescope I used
Sky : 
0
2nd Quarter
Clouds: 
Clear
Wind: 
Medium
Seeing Value: 
0.00
Seeing Variability: 
0
Seeing Source: 
The Telescope I used
Sky: 
0
3rd Quarter
Clouds: 
Clear
Wind: 
Medium
Seeing Value: 
1.10
Seeing Variability: 
0
Seeing Source: 
CTIO Seeing monitor
Sky: 
0
4th Quarter
Clouds: 
Clear
Wind: 
Medium
Seeing Value: 
1.00
Seeing Variability: 
0
Seeing Source: 
The Telescope I used
Sky: 
0
  • Delete
  • Edit
Program: 
Proposal: 
2013A-0724
Target of Oportunity: 
No
Time Observed: 
7.5
Time Engineering: 
0.0
Time lost technical: 
3.5
Time lost weather: 
0.0
Time lost other: 
0.5
Description: 
NEO Search
Primary Investigator: 
Lori Allen
Email: 
lallen@noao.edu [1]
Institution: 
NOAO
Instrument: 
CTIO 4m DECam
Organization: 
NOAO
Total Program Time: 
11.5
  • Delete [2]
  • Edit [3]
  • Add [4]
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2013-04-18 7.5 0.0 3.5 0.0 0.5 11.5

Source URL (modified on 04/19/2013 - 07:29): http://www.ctio.noao.edu/noao/content/ENR-CTIO-Blanco-4-m-2013-04-18

Links
[1] mailto:lallen@noao.edu
[2] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/863/delete?destination=print/node/3506
[3] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/863/edit?destination=print/node/3506
[4] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/add/node/3506?destination=print/node/3506