Date:
Friday, June 14, 2013
Telescope:
CTIO Blanco 4-m
Submitter:
Anja von der Linden
Submitter Email:
Observer Support:
Hernan Tirado
Night Assistant:
Claudio Aguilera
Also Present:
Adam Wright
Problems:
Beginning of the night: GCS interlock error; restarting did not fix it. Error message "PML failed", then "PML time-out" . But no PML in the Architect Console... ? Restarted SISPI. Lost the first ~30 min.
Around 5am UT: after losing the guide stars in one exposure (forgot to change guideexptime), the GuiderGUI again stopped showing images of the guide stars in all subsequent exposures. (The guider was working, however.) Tried to restart the GUIDERGUI and GUIDERVNC roles, but to no effect. This is a pity, as we lose the visual impression of the current seeing conditions.
~6:20am UT (during exposure 212733): Observer Console said "Aw, snap!" After restarting, the exposure history no longer showed entries for exposures 212617 - 212731.
Program:
Proposal:
2013A-0360
Target of Oportunity:
No
Time Observed:
11.0
Time Engineering:
0.0
Time lost technical:
0.5
Time lost weather:
0.0
Time lost other:
0.0
Primary Investigator:
Anja von der Linden
Email:
Institution:
KIPAC
Instrument:
CTIO 4m DECam
Organization:
NOAO
Total Program Time:
11.5
| Total Times | Time Observed | Time Engineering | Time lost technical | Time lost weather | Time lost other | Total Program Time |
|---|---|---|---|---|---|---|
| 2013-06-14 | 11.0 | 0.0 | 0.5 | 0.0 | 0.0 | 11.5 |
Printer-friendly version
I am happy that the DIMM is working again!
Tonight was frustrating, however: the DIMM showed very good seeing, ~0.5". Unfortunately, this only translated to ~0.9" seeing in the images (i-band, taken at low airmass). There was no obvious cause: the mirror temperature was close to the "lowdome" temperature, and the wind speed low, but non-zero.
Also, the DIMM seems to take about one-hour breaks at ~0h UT and ~5h UT. Is there any chance to fix this?