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ENR CTIO Blanco 4-m 2013-02-12

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Date: 
Tuesday, February 12, 2013
Telescope: 
CTIO Blanco 4-m
Submitter: 
Dey, Atlee
Submitter Email: 
dey@noao.edu
Observer Support: 
Claudio Aguilera
Night Assistant: 
Leonardo Paredes
Problems: 

Hiccup with DECam at start of night. This is documented in the Dark Energy Camera logbook.

Noticed that the telescope centering error increases steadily with time, with each exposure in a sequence. The RA error increases monotonically. The DEC error also increases monotonically, but the sign changes on either side of transit. We are sending e-mail to Alistair Walker and Chris Smith about this behavior. 

Seeing was good tonight, but DECam does not seem to be delivering sub-arcsec images (which we think the site is indeed delivering). Hopefully we are wrong about this!

Otherwise, DECam worked very well and we got lots and lots of excellent data!!

Comments: 

We're looking forward to our next DECam run!! What a great instrument!.

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Clear
Seeing Value: 
0.00
Seeing Variability: 
0
Seeing Source: 
CTIO Seeing monitor
Sky : 
0
2nd Quarter
Clouds: 
Clear
Seeing Value: 
0.00
Seeing Variability: 
0
Seeing Source: 
CTIO Seeing monitor
Sky: 
0
3rd Quarter
Clouds: 
Clear
Seeing Value: 
0.00
Seeing Variability: 
0
Seeing Source: 
CTIO Seeing monitor
Sky: 
0
4th Quarter
Clouds: 
Clear
Seeing Value: 
0.00
Seeing Variability: 
0
Seeing Source: 
CTIO Seeing monitor
Sky: 
0
Program: 
Target of Oportunity: 
No
Time Observed: 
0.0
Time Engineering: 
0.0
Time lost technical: 
0.25
Time lost weather: 
0.0
Time lost other: 
0.0
Total Program Time: 
0.25
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2013-02-12 0.0 0.0 0.25 0.0 0.0 0.25