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CTIO Home > ENR CTIO Blanco 4-m 2023-02-04

ENR CTIO Blanco 4-m 2023-02-04

Date: 
Saturday, February 4, 2023
Telescope: 
CTIO Blanco 4-m
Submitter: 
Gautham Narayan
Submitter Email: 
gsn@illinois.edu
Observer Support: 
Manuel Hernandez
Night Assistant: 
Claudio Aguilera
Problems: 

Some clouds at start of night, which prevented us from verifying pointing for 15 min.
This was followed by 5.5 earthquake soon after opening! https://earthquake.usgs.gov/earthquakes/eventpage/us6000jlhg/executive
Stopped observations, everyone seems OK, staff checked out facilities, and we were back on sky fairly quickly.
Couple of instances of the pointing going completely off - was at +/- 5-10 arcsec in RA/Dec and then jumped to +110/-270 (see 1170821 -> 1170823)
On at least one of these instances, Claudio applied the pointing correction (prior to starting DESIRT 165) but TCS didn't seem to apply the offset.
Seems like much larger jumps than I've seen before on any night since 2020A semester.

Comments: 

Only 15 min of downtime after the earthquake is really remarkable - many thanks and all our respect to Claudio and Manuel, and the rest of the staff.

Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Partially cloudy
Wind: 
Low
Seeing Value: 
1.40
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky : 
3
2nd Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
1.20
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
3rd Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
1.00
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
4th Quarter
Clouds: 
Clear
Wind: 
Low
Seeing Value: 
0.90
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
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Program: 
Proposal: 
2020B-0053
Target of Oportunity: 
No
Time Observed: 
8.0
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
0.25
Time lost other: 
0.25
Description: 
DEBASS/DECAT
Primary Investigator: 
Dillon Brout
Email: 
dillon.brout@cfa.harvard.edu [1]
Institution: 
Harvard
Instrument: 
CTIO 4m DECam
Organization: 
NOAO
Total Program Time: 
8.5
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2023-02-04 8.0 0.0 0.0 0.25 0.25 8.5
Source URL (modified on 02/05/2023 - 06:15): http://www.ctio.noao.edu/noao/content/ENR-CTIO-Blanco-4-m-2023-02-04

Links
[1] mailto:dillon.brout@cfa.harvard.edu
[2] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/42088/delete?destination=print/node/19998
[3] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/42088/edit?destination=print/node/19998
[4] http://www.ctio.noao.edu/noao/field-collection/field-nr-prog/add/node/19998?destination=print/node/19998