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ENR CTIO Blanco 4-m 2014-01-01

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Date: 
Wednesday, January 1, 2014
Telescope: 
CTIO Blanco 4-m
Submitter: 
Ting Li
Submitter Email: 
sazabi@tamu.edu
Observer Support: 
Manuel Hernandez
Night Assistant: 
Claudio Aguilera
Also Present: 
James Etherington, Philip Rooney
Problems: 

None.

Comments: 
  1. Warning alarm (3103): Humidity > 5% occurred at 04:39 UTC. We observed the humidity for 5 minutes. The humidity increased to > 7.0%. Asked telOps to close the Louvre window at 04:46 UTC. TelOps also increased the flow of dry gas to reduce the humidity. Humidity fell to 2.4% at 04:56 UTC.
  2. At 05:44 UTC. FCM Humidity fell below 1%. The seeing (from the images) increased to 1.2-1.3 arcsec.(It was about 0.8 before we closed the Louvre window.) We asked the TelOps to open the Louvre window again.
  3. Low dome temp fell beneath the pmas temp from 05:30 UTC. Please check e-log entry #151558 for screen shot.
Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
0.85
Seeing Variability: 
0.4
Seeing Source: 
CTIO Seeing monitor
Sky : 
0
2nd Quarter
Clouds: 
Clear
Precipitation: 
High Humidity
Wind: 
Low
Seeing Value: 
0.50
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky: 
0
3rd Quarter
Clouds: 
Clear
Precipitation: 
High Humidity
Wind: 
Medium
Seeing Value: 
0.40
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky: 
0
4th Quarter
Clouds: 
Clear
Precipitation: 
High Humidity
Wind: 
Medium
Seeing Value: 
0.40
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky: 
0
Program: 
Proposal: 
2012B-0001
Target of Oportunity: 
No
Time Observed: 
7.5
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
Dark Energy Survey
Primary Investigator: 
Josh Frieman
Email: 
frieman@fnal.gov
Institution: 
Fermilab
Instrument: 
CTIO 4m DECam
Organization: 
N/A
Total Program Time: 
7.5
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2014-01-01 7.5 0.0 0.0 0.0 0.0 7.5