You are here

ENR CTIO Blanco 4-m 2017-08-19

Primary tabs

Date: 
Saturday, August 19, 2017
Telescope: 
CTIO Blanco 4-m
Submitter: 
Jen Marshall
Submitter Email: 
Observer Support: 
Hernan Tirado
Night Assistant: 
Claudio Aguilera
Also Present: 
Erika Cook, Ting Li (remote), Yuanyuan Zhang (remote)
Problems: 

First half:

Occlusion Danger Zone warning 6 times.

Exp669424 Guider Alert: Continuous null centroids limit exceeded.

It seems as if in many cases the exposure starts before the dome even begins to move--perhaps the recent modifications to the dome control software could be further improved.  This happened mainly in the first 2.3 of the night; the end of the night was okay.

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Clear
Seeing Value: 
1.30
Seeing Variability: 
0
Seeing Source: 
CTIO Seeing monitor
Sky : 
0
2nd Quarter
Clouds: 
Clear
Seeing Value: 
1.50
Seeing Variability: 
0
Seeing Source: 
CTIO Seeing monitor
Sky: 
0
3rd Quarter
Clouds: 
Clear
Seeing Value: 
1.20
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
4th Quarter
Clouds: 
Clear
Wind: 
Medium
Seeing Value: 
1.50
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
Program: 
Proposal: 
2014B-0404
Target of Oportunity: 
No
Time Observed: 
5.5
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
DECalS
Primary Investigator: 
David Schlegel
Total Program Time: 
5.5
Proposal: 
2012B-0001
Target of Oportunity: 
yes
Time Observed: 
5.5
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
Institution: 
Fermilab
Instrument: 
CTIO 4m DECam
Organization: 
NOAO
Total Program Time: 
5.5
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2017-08-19 11.0 0.0 0.0 0.0 0.0 11