GISMO run #6 (April 2012, 1st pool run)
Staffing
- GSFC: J. Staguhn, A. Kovacs, S. Maher, E. Sharp (1st week), D. Fixsen (first 4 days), D.Benford (last 5 days)
- IRAM: S. Leclercq (1st week), A. Sievers, D. John, IRAM Granada staff
- Other observers: A. Karim (1st week), A.Edge (2nd week)
Schedule: 05.04. - 21.04.2012
IRAM 30m schedule page: http://www.iram.fr/IRAMFR/PV/sche/12/s15v1.html
Summarized schedule of the run:
Dates |
Main event |
Thursday 05/04 - Monday 09/04 |
Arrival of ES, SM and DF at the telescope with missing hardware, mount GISMO, cool down |
Tuesday 10/04 - Tuesday 17/04 |
Arrival of JS, AK, SL, and AK at the telescope, alignment, calibration/characterization work (see test plan), pooled projects observations, departure DF, ES |
Tuesday 17/04 - Tuesday 24/04 |
Departure SL AK, arrival DB AE, pooled projects observations |
GISMO final version
Same 8x16 pixels as 2nd to 5th test runs, working at 2mm (the –3dB window is 140-162 GHz), with an individual pixel size = 0.9 Fλ.
Same special features from previous runs: 2 motorized neutral density filters, controllable shutter, automated observing procedures usable via a dedicated GUI (see observer's manual), CRUSH reduction package.
- New updates: cold baffle, final position in the receiver cabin with corresponding warm optics (M5, M6), new cold pupil.
Daily reports
Thursday 05/04 - Monday 09/04
ES, DF and IRAM staff mounted and cooled down GISMO at its final position (see pictures below). Everything looks fine, based temperature reached, nice response of the detectors, first light on Saturn shows a nice shape indicating the optics is fine.
Tuesday 10/04
JS, AK, AK, SL, AS at the telescope. Alignment with laser (SN anf DJ). Everything looks fine, but weather is bad.
Here's some pictures of GISMO installed in the 30m receiver cabin:
Mid afternoon: abnormal temperature rise on the detector package. Maybe a little touch somewhere, vibrations transmission ... investigation underway. Weather 100% humid anyway.