You are here

CTIO Home

ENR CTIO Blanco 4-m 2022-12-06

Primary tabs

Date: 
Tuesday, December 6, 2022
Telescope: 
CTIO Blanco 4-m
Submitter: 
Alistair Walker
Submitter Email: 
alistair.walker@noirlab.edu
Observer Support: 
Hernan Tirado
Night Assistant: 
Alberto Alvarez
Also Present: 
Jackie, Alvaro, Javier in-person, Diego, Hannah, Marco remote
Problems: 

Failure of the two main breakers for the Glycol Chillers/Pumps at 23:40.    Three hours later we are running the LN2 system on the air-cooled compressor only.   We are extremely short of LN2 in the Linde tank one full tank at the C floor.  DECam tank at 71%, heater off.   Crates 1,2,3 off, top cap of telescope off, at NW platform, open lower shutter opposite, maintaining 35C.  Computer room with two big fans, all access doors to G floor open, rack doors open.    Trying to avoid warming DECam up, without melting everything else.

Comments: 

Diego, Hannah and Marco worked on debugging why the new readou6 machine will not produce believable AO results.  They made good progress and found missing libraries that were installed.   Tests were terminated by the Glycol failure.

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
0.20
Seeing Variability: 
1.0
Seeing Source: 
The Telescope I used
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: 
3.0
Time lost technical: 
0.0
Time lost weather: 
0.0
Time lost other: 
4.5
Total Program Time: 
7.5
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2022-12-06 0.0 3.0 0.0 0.0 4.5 7.5