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ENR CTIO Blanco 4-m 2022-09-06

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Date: 
Tuesday, September 6, 2022
Telescope: 
CTIO Blanco 4-m
Submitter: 
Guillermo Damke
Submitter Email: 
guillermo.damke@noirlab.edu
Observer Support: 
Manuel Hernandez
Night Assistant: 
Claudio Aguilera
Also Present: 
Rodrigo Hernandez, Alfredo Zenteno
Problems: 

We experienced two problems during the night:

1. Three images (1131268, 1131309 and 1131378) had the same problem experienced on the night of Sep5/6 (image 1130918) where data from CCDs N4,N5,N6,N7 and S4, S5, S6 and S7 are not transmitted. The resulting FITS files are "complete in a digital sense" (quoting Marco's words) but do not have stored data from the aforementioned CCDs. We decided not to restart the system, expecting that the next image readouts correctly in each case — which happened effectively.

2. An "interlock SISPI (HEXAPOD)" alarm was fired at 3:20 local time. Claudio had to restart SISPI. Similarly to the beginning of the night, Claudio ran the command "focus aos init_pid aos5" in the architect console after restarting the system. Images where out of focus right after resuming observing (image 1131321); we took a few 30-sec exposures in the r band (images 322-325) and the focus improved.

Comments: 

Before starting observing in the evening, Manuel and Rodrigo ran the command provided by Alistair (focus aos init_pid aos5) in the architect console.

As a comment: we tested observing satellite trails at the beginning of the night, in an attempt to test DECam for measuring brightness of some of the new satellite constellations being launched recently — as part of site protection initiatives. We succesfully captured trails of Starlink-1356, Oneweb-0311 and Oneweb-0290.

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
1.30
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky : 
0
2nd Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
1.40
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
3rd Quarter
Clouds: 
Clear
Wind: 
Medium
Seeing Value: 
1.70
Seeing Variability: 
0.4
Seeing Source: 
The Telescope I used
Sky: 
0
4th Quarter
Clouds: 
Clear
Wind: 
Medium
Seeing Value: 
1.80
Seeing Variability: 
0.6
Seeing Source: 
The Telescope I used
Sky: 
0
Program: 
Proposal: 
2020A-0058
Target of Oportunity: 
No
Time Observed: 
5.25
Time Engineering: 
0.0
Time lost technical: 
0.25
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
Sgr tidal tails (using ID borrowed from Vivas for Crater II proposal)
Primary Investigator: 
Kathy Vivas
Email: 
kathy.vivas@noirlab.edu
Institution: 
CTIO
Instrument: 
CTIO 4m DECam
Organization: 
NOAO
Total Program Time: 
5.5
Proposal: 
2020B-0053
Target of Oportunity: 
No
Time Observed: 
0.5
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
The Next Generation of Low Redshift Cosmology with Type Ia Supernovae
Primary Investigator: 
Dillon Brout
Email: 
dbrout@physics.upenn.edu
Institution: 
University of Pennsylvania
Instrument: 
CTIO 4m DECam
Total Program Time: 
0.5
Proposal: 
2022A-597406
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: 
DeROSITAS
Primary Investigator: 
Alfredo Zenteno
Email: 
alfredo.zenteno@noirlab.edu
Institution: 
CTIO
Instrument: 
CTIO 4m DECam
Organization: 
NOAO
Total Program Time: 
4
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2022-09-06 9.75 0.0 0.25 0.0 0.0 10