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ENR CTIO Blanco 4-m 2013-01-19

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Date: 
Saturday, January 19, 2013
Telescope: 
CTIO Blanco 4-m
Submitter: 
Bob Nichol, Chris Smith
Submitter Email: 
bob.nichol@port.ac.uk
Observer Support: 
Mauricio Rojas
Night Assistant: 
Alberto Alvarez
Also Present: 
Chris Smith, Lyndsay Old, David Gerdes, Kai Hoffmann, Adam Miller, Chris Klein
Problems: 

1st half: None.

2nd half: various.  Within first 30min = OCS interlock error, resolved with "Configure" button; lost primary air.  As we started the series of 20s and 40s exposures, we noticed that the tracking was bad in RA (thought it was guiding initially, but it is tracking).  Guider showed swings of +-2" in some images, and +-1" in MANY images.  Tried different slew/settle strategies, but this tracking problem unfortunately affected the majority of images.  NEED HELP if possible to find soln to tracking problems in East at -45 deg.  Perhaps recheck balance?

Comments: 

High cirrus clouds through some of the night, although seeing was typically below 1.0 arcseconds for most of the first half of the night.

Ran DES "obstac" for whole half of night without incident

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Cirrus
Wind: 
Low
Seeing Value: 
1.00
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky : 
3
2nd Quarter
Clouds: 
Cirrus
Wind: 
Low
Seeing Value: 
1.00
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
4
3rd Quarter
Clouds: 
Clear
Seeing Value: 
1.30
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky: 
1
4th Quarter
Clouds: 
Cirrus
Wind: 
Low
Seeing Value: 
0.00
Seeing Variability: 
0
Seeing Source: 
The Telescope I used
Sky: 
3
Program: 
Proposal: 
0003
Target of Oportunity: 
No
Time Observed: 
3.75
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
DES
Primary Investigator: 
Frieman
Institution: 
Fermilab
Instrument: 
CTIO 4m DECam
Organization: 
NOAO
Total Program Time: 
3.75
Proposal: 
2012B-0363
Target of Oportunity: 
No
Time Observed: 
2.0
Time Engineering: 
0.0
Time lost technical: 
2.0
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
Time-Domain
Primary Investigator: 
Bloom
Email: 
amiller@astro.berkeley.edu
Institution: 
U.Berkeley
Instrument: 
CTIO 4m DECam
Organization: 
NOAO
Total Program Time: 
4
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2013-01-19 5.75 0.0 2.0 0.0 0.0 7.75