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ENR CTIO Blanco 4-m 2013-01-18

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Date: 
Friday, January 18, 2013
Telescope: 
CTIO Blanco 4-m
Submitter: 
Bob Nichol
Submitter Email: 
bob.nichol@port.ac.uk
Observer Support: 
Mauricio Rojas
Night Assistant: 
Alberto Alvarez
Also Present: 
Kai Hoffmann, Lynsday Old, David Gerdes, Alastair Walker
Problems: 

We experienced major telescope problems from the start of twlight until approximately 11:30 local time. The main issue was with the telescope unable to move in RA but could move in DEC. After over an hour of investigation, the problem appeared to be hydraulic high pressure pump for the horseshoe not pumping oil to the bearing. Maybe an issue with the valuing which was changed during the day and not tested. This was falled by a small interruption due to lack of communications between SISPI and TCS requiring a reboot of the TCS. 

Luckily these issues appear to have exactly coincided with cloudy conditions on the RASICAM, and we appear to have got back on sky as the clouds cleared. 

No further problems during the DES first half of the night

 

 

Comments: 

None.

Conditions: 
General Conditions
Temperature Max: 
15.00
Temperature Min: 
12.00
Humidity Max: 
95
Humidity Min: 
65
Wind Speed Max: 
9.00
Wind Speed Min: 
1.00
Comment: 
The sky condition is not safe at all to attempt doing any king of observations or tests.
1st Quarter
Clouds: 
Thin Clouds
Wind: 
Medium
Seeing Value: 
0.80
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky : 
3
2nd Quarter
Clouds: 
Thin Clouds
Wind: 
Medium
Seeing Value: 
0.80
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
2
3rd Quarter
Clouds: 
Thin Clouds
Wind: 
Low
Seeing Value: 
1.50
Seeing Variability: 
0.4
Seeing Source: 
The Telescope I used
Sky: 
2
4th Quarter
Clouds: 
Thin Clouds
Wind: 
Medium
Seeing Value: 
1.00
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
2
Program: 
Proposal: 
003
Target of Oportunity: 
No
Time Observed: 
2.0
Time Engineering: 
1.5
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: 
3.5
Proposal: 
2012B-0625
Target of Oportunity: 
No
Time Observed: 
4.0
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
Service Observing by A. Wal;mer
Primary Investigator: 
Sarah Sweet
Instrument: 
CTIO 4m DECam
Total Program Time: 
4
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2013-01-18 6.0 1.5 0.0 0.0 0.0 7.5