Date:
Friday, July 2, 2021
Telescope:
CTIO Blanco 4-m
Submitter:
Kathy Vivas
Submitter Email:
Observer Support:
Fernando Cortés
Night Assistant:
Alberto Alvarez
Also Present:
Alistair Walker, Clara Martínez
Problems:
At the start of night, images were completely out of focus, and the system was not able to focus automatically, as it usually does. SISPI did not trigger any alarm at all to give us a cue of what was happening. Hexapod was tested and it was working correctly. A relation with the TCS was also tested with no positive results. Finally, A. Walker was able to reset the trim values to 0 and from that point the focus system was able to regulate itself and get the right focus. First focused image was obtained at 11:30pm.
It took a couple of SISPI restarts in order to bring back the comfort display.
Program:
| Total Times | Time Observed | Time Engineering | Time lost technical | Time lost weather | Time lost other | Total Program Time |
|---|---|---|---|---|---|---|
| 2021-07-02 | 0.0 | 12.0 | 0.0 | 0.0 | 0.0 | 12 |
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Engineering night to test DECam after the COSMOS run. Lots of clouds tonight. We were not able to execute the ToO trigger because of the focus problems at the start of the night (it is ok. This trigger was not time sensitive. PI should be able to trigger agin in the next few days).
After fixing the issue with the focus, the camera worked perfectly the rest of the night.