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ENR CTIO Blanco 4-m 2021-10-08

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Date: 
Friday, October 8, 2021
Telescope: 
CTIO Blanco 4-m
Submitter: 
Hyunmi Song
Submitter Email: 
hmsong@cnu.ac.kr
Observer Support: 
Kathy Vivas
Night Assistant: 
Alberto Alvarez
Also Present: 
Hernan Tirado, Jacqueline Seron
Problems: 

Bad seeings (2~3arcsec)

Comments: 
  • We had bad seeings (~3arcsec) at the beginning of the night, which tricked psc into claiming the seeing was 1.2arcsec. This made us not believe the results given by psc, for example, the large pointing offset, and thus we could make a pointing correction later after the situation got stable.
  • We had to set the guider exposure time to be 1800ms (instead of 1200ms) for the N419 filter.
  • The seeing was bad (2~3arcsec) during the whole night.
Conditions: 
General Conditions
Comment: 
None.
1st Quarter
Clouds: 
Clear
Precipitation: 
High Humidity
Wind: 
Medium
Seeing Value: 
2.02
Seeing Variability: 
0.6
Seeing Source: 
The Telescope I used
Sky : 
0
2nd Quarter
Clouds: 
Clear
Precipitation: 
High Humidity
Wind: 
Medium
Seeing Value: 
2.02
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
3rd Quarter
Clouds: 
Clear
Precipitation: 
High Humidity
Wind: 
Medium
Seeing Value: 
2.55
Seeing Variability: 
0.4
Seeing Source: 
The Telescope I used
Sky: 
0
4th Quarter
Clouds: 
Clear
Precipitation: 
High Humidity
Wind: 
Medium
Seeing Value: 
2.08
Seeing Variability: 
0.2
Seeing Source: 
The Telescope I used
Sky: 
0
Program: 
Proposal: 
2020B-0201
Target of Oportunity: 
No
Time Observed: 
8.75
Time Engineering: 
0.0
Time lost technical: 
0.0
Time lost weather: 
0.0
Time lost other: 
0.0
Description: 
A 100 sqdeg DECam narrow-band survey for the LSST era
Primary Investigator: 
Kyoung-Soo Lee
Email: 
soolee@purdue.edu
Institution: 
Purdue University
Instrument: 
CTIO 4m DECam
Organization: 
NOAO
Total Program Time: 
8.75
Total Times Time Observed Time Engineering Time lost technical Time lost weather Time lost other Total Program Time
2021-10-08 8.75 0.0 0.0 0.0 0.0 8.75