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November 2015, 26 (Thursday)
- The weather was not great at the begining of the night tau=0.4 but improved later on reaching about tau=0.2. The wind was pretty strong and we had a largely fluctuating atmosphere.
- We did some testing work on ncs to understand the problem we had yesterday when the telescope could not track some sources when using focusliss. After some scans it seemed clear that the problem is that there was not track in between two focusliss in two different sources. The recommendation is to do a track when we switch sources - this is what we normally so it should not bea problem. [Comment by CK (27-Nov): It is good that you have a work-around. However, the problem should not happen and indicates that the rather new focusliss scans are not fully debugged. Walter is currently investigating this problem and may come back with improved software soon.]
- We did beammaps on Uranus and skydips in order to ensure redundancy - need to work on the data now
- We did observations on relatively faint sources to extrack rms noise - need to finalize the work on calibration to make this possible
Telescope starts oscillating wildly in Azimuth for few of the focusliss scans, as reported by operators. See the dedicated wiki. Gabriel is investigating in detail. Hans suggests to change testwise observing parameters. Operators have received instructions. (CK, 27-Nov)
Beam shapes of the arrays 1 & 3, maps 20151126s112 (red), 20151126s113 (green) and 20151126s114 (blue) (RZ, Nov 27)
November 2015, 25 (Wednesday)
Good weather (opacity of ~0.1) but still a lot of wind --> No observations
- We reduced beam maps and updated geometries (skydip coefficients and kid selection)
- We made an analysis on the Uranus beammap (20151124s171) to characterize the beam.
--> total beam profile and primary beam gaussian fit.
--> integrated total beam and primary beam to compute the secondary beam fraction.
Unfortunately this map was made quite out of focus in y,z, i.e. the derived numbers are representative only for out of focus data (RZ, Nov 26)
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November 2015, 24 (Tuesday)
- NIKA2 is cold again. Arrival at the telescope of AB, JMP, BC, FR.
- Installation of the new AMC card. New settings from Olivier to allow booting of 8 cards on CRATE 3, afterall we dichted one card because of sync problems
- Some trouble to find the first resonances, but wizard Alain came and saved the day
- Some nice skydips tau~0.3, but nice fit
- First geometry on the sky, without a proper refkid at 1mm we can not use the cross for pointing and focus, so back to lissajous
- First focus on 3C84, followed by geometry
- Quick picture on the geometry:
