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CTIO Home > ENR CTIO Blanco 4-m 2013-07-18

ENR CTIO Blanco 4-m 2013-07-18

Date: 
Thursday, July 18, 2013
Telescope: 
CTIO Blanco 4-m
Submitter: 
Christopher Klein and Chris Lidman
Submitter Email: 
cklein@berkeley.edu
Observer Support: 
Andrea Kunder
Night Assistant: 
Leonardo Paredes
Also Present: 
Mauricio Rojas
Problems: 

We had another interlock (shutter) error, but it was fixed with "configure". We lost about 7 minutes of observing time.

Images 220698 and onwards have larger, more eratic ellipticities.

Images on guide CCDs  for 220709  look like doughnuts. Problem is getting worse.  Called Andrea Kunder for support.

Restarted the system (3 times).

Stars in guider are no longer doughnuts. Image quality is in much better agreement with the seeing measured on the other telescopes.

The cause of the  poor image quality may have started  before image 220698.

Another shutter error. Leonardo fixed it. 4 minutes lost.

Comments: 

None.

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Clear
Wind: 
Medium
Seeing Value: 
1.40
Seeing Variability: 
0.4
Seeing Source: 
The Telescope I used
Sky : 
0
2nd Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
1.50
Seeing Variability: 
0.4
Seeing Source: 
The Telescope I used
Sky: 
0
3rd Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
1.60
Seeing Variability: 
0.6
Seeing Source: 
The Telescope I used
Sky: 
0
4th Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
1.30
Seeing Variability: 
0.4
Seeing Source: 
The Telescope I used
Sky: 
0
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Program: 
Proposal: 
2013A-0400
Target of Oportunity: 
No
Time Observed: 
5.25
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
A Pilot DECam Time-Domain Survey
Primary Investigator: 
Josh Bloom
Email: 
joshbloom@berkeley.edu [1]
Institution: 
U.Berkeley
Instrument: 
CTIO 4m DECam
Organization: 
NOAO
Total Program Time: 
5.25
Proposal: 
2013A-0618
Target of Oportunity: 
No
Time Observed: 
5.5
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
Galaxy clusters in the XXM XXL Southern field
Primary Investigator: 
Chris Lidman
Email: 
clidman@aao.gov.au [4]
Institution: 
AAO
Instrument: 
CTIO 4m DECam
Organization: 
N/A
Total Program Time: 
5.5
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2013-07-18 10.75 0.0 0.0 0.0 0.0 10.75
Source URL (modified on 07/19/2013 - 07:03): http://www.ctio.noao.edu/noao/node/4025

Links
[1] mailto:joshbloom@berkeley.edu
[2] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/995/delete?destination=print/content/enr-ctio-blanco-4-m-2013-07-18
[3] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/995/edit?destination=print/content/enr-ctio-blanco-4-m-2013-07-18
[4] mailto:clidman@aao.gov.au
[5] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/996/delete?destination=print/content/enr-ctio-blanco-4-m-2013-07-18
[6] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/996/edit?destination=print/content/enr-ctio-blanco-4-m-2013-07-18
[7] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/add/node/4025?destination=print/content/enr-ctio-blanco-4-m-2013-07-18