Target of Oportunity:
No
Time Observed:
8.0
Time Engineering:
0.0
Time lost technical:
3.0
Time lost weather:
1.0
Time lost other:
0.0
Primary Investigator:
Todd Henry
Email:
Institution:
SMARTS
Instrument:
CTIO 1.5m Echelle
Organization:
SMARTS
Total Program Time:
12

Clouds passing along the night, some spectra with variable and/or poor signal.
At the beginning of the night David Rojas, Leonardo Paredes (skype) and I changed the Th-Ar lamp in order to understand the differences found by Leonardo in strength, sharpness and lines. The new lamp has features more similar to the lamp calibrations taken before of the problem reported on 2019-07-16, however some differences are still there. In order to continue with the observations we left the new lamp and took several calibrations to investigate further if using this lamp is an improvement or not.