You are here

CTIO Home

ENR CTIO Blanco 4-m 2025-07-15

Primary tabs

Date: 
Tuesday, July 15, 2025
Telescope: 
CTIO Blanco 4-m
Submitter: 
Guy Stringfellow (1st half) Tomas Ahumada (2nd half)
Submitter Email: 
tahumada@caltech.edu
Observer Support: 
Hernan Tirado
Night Assistant: 
Roberto Aviles
Also Present: 
Rodrigo Hernandez, K. Boutsia, G. Damke
Problems: 

Three interlock SISPI (GCS) broken errors during thefirst half of the night. Lost 3  images.

Second half:

Shutter synchronization error:

5:19

6:26

6:52

around 7:30 lost ~30 min to SISPI error

8:05

9:30

 

 

Comments: 

Multiple SISPI synchronization errors

Roberto and Rodrigo tried their best to solve the software issues, and only in one occasion it took more than 5 min (30 min)

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Overcast
Wind: 
Low
Seeing Value: 
1.20
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky : 
8
2nd Quarter
Clouds: 
Thin Clouds
Wind: 
Low
Seeing Value: 
1.20
Seeing Variability: 
0.2
Seeing Source: 
CTIO Seeing monitor
Sky: 
2
3rd Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
1.50
Seeing Variability: 
0
Seeing Source: 
The Telescope I used
Sky: 
0
4th Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
1.80
Seeing Variability: 
0
Seeing Source: 
The Telescope I used
Sky: 
0
Program: 
Proposal: 
2019A-0305
Target of Oportunity: 
No
Time Observed: 
5.5
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
2.5
Time lost other: 
0.0
Description: 
DECam local volume exploration survey
Primary Investigator: 
Alex Drlica-Wagner
Email: 
kdrlica@uchicago.edu
Institution: 
The University of Chicago
Instrument: 
CTIO 4m DECam
Organization: 
NOAO
Total Program Time: 
8
Proposal: 
2025A-898810
Target of Oportunity: 
No
Time Observed: 
5.5
Time Engineering: 
0.0
Time lost technical: 
1.0
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
A volumetric increase of ZTF searches
Primary Investigator: 
Tomas Ahumada
Email: 
tahumada@caltech.edu
Institution: 
California Institute of Technology
Instrument: 
CTIO 4m DECam
Organization: 
NOAO
Total Program Time: 
6.5
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2025-07-15 11.0 0.0 1.0 2.5 0.0 14.5