Date:
Wednesday, April 5, 2023
Telescope:
CTIO Blanco 4-m
Submitter:
Sean Points
Submitter Email:
Observer Support:
Hernan Tirado
Night Assistant:
Alberto Alvarez
Also Present:
Guider team (remote from LS)
Problems:
The seeing monitor down for the night so I used the RINGSS page to report seeing. I obtained images with bad readouts in the followig images (690,719,723,724, etc). After it occurred 4x, I stopped noting which were bad. The telescope focus didn't change for one of the focus sequencessequence; Alberto had to reset M2.
Program:
Proposal:
NEWFIRM Engineering
Target of Oportunity:
No
Time Observed:
0.0
Time Engineering:
10.5
Time lost technical:
0.0
Time lost weather:
0.0
Time lost other:
0.0
Description:
NEWFIRM Engieering
Primary Investigator:
Points
Email:
Institution:
CTIO
Instrument:
CTIO 4m Newfirm
Organization:
NOAO
Total Program Time:
10.5
| Total Times | Time Observed | Time Engineering | Time lost technical | Time lost weather | Time lost other | Total Program Time |
|---|---|---|---|---|---|---|
| 2023-04-05 | 0.0 | 10.5 | 0.0 | 0.0 | 0.0 | 10.5 |
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Took data to determine the focus offset of other filters with respect to J. The seeing seemed to be variable when attempting this. Prelimenary dataindicate that J and H are roughly parfocal and K is J+50 units. It also seems that the NB filters 1644 [FeII], 2124 (H_2), and 2168 (Br-gamma) are parfocal with J. The focus values are close at the very least. Took calibration data of Persson 9147 in all detectors with JHKs. Took data of CD-51 9828 in 1644, 2124, and 2148 for calibration purposes.