Date:
Friday, August 28, 2015
Telescope:
CTIO Blanco 4-m
Submitter:
Tim Abbott
Submitter Email:
Observer Support:
Manuel Hernandez
Night Assistant:
Alberto Alvarez
Problems:
SISPI had a 7:20am slowdown at 10:15-10:45, Klaus turned off telemetry DB writing which *might* have helped. Server3 showed lots of quickreduce activity. We stopped quickreduce and that *might* have helped too.
All SISPI/Chrome displays occasionally (3 times) required restarts, but they did not all lock up together.
An ssh from observer3 to observer2 to run kentools required -X or -Y flag to allow opening an saoimage window, but this window was very slow. Klaus says this might be Petri's problem to solve.
Program:
Proposal:
2013A-9999
Target of Oportunity:
No
Time Observed:
0.0
Time Engineering:
7.25
Time lost technical:
0.0
Time lost weather:
3.0
Time lost other:
0.0
Description:
DECam engineering
Primary Investigator:
AW
Email:
Institution:
NOAO
Instrument:
CTIO 4m DECam
Organization:
NOAO
Total Program Time:
10.25
| Total Times | Time Observed | Time Engineering | Time lost technical | Time lost weather | Time lost other | Total Program Time |
|---|---|---|---|---|---|---|
| 2015-08-28 | 0.0 | 7.25 | 0.0 | 3.0 | 0.0 | 10.25 |
Printer-friendly version
I started the night with a high resolution wavefront map using the Aaron90.json script. This is probably useful. Images 467422-471.
I then went to active optics hysteresis scans, starting with the scan across the largest residual regions. However, the position of the moon forced me to switch to the orthogonal "control" scan. I discovered a mistake in this script, fixed it and generated the scripts HysMap-1loop.json and HysMapCon-1loop.json to be used with the telescope defocused by 1500 microns, explicitly excluding the AOS, BCAMs and Guider. These scripts are also only one loop long, so multiple loops should be run back to back as many times as the script is submitted. The weather turned cloudy and these scans are probably useless. Oh well. Anyone running these scripts on subsequent nights should set up the defocus in the same way as for Aaron's hires wavefront map - 1500 off (check that the relevant NFn CCDs do look roughly in focus in the images) and "focus aos init_pid aos_off". Each loop takes ~1 hour, take at least 3.
Tried to find DECal instructions, called DJJ but he was snoring, satellite pics show more clouds on the way, so gave up at 4am.