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Friday 7th November 2014
Barbara and Alessandro arrived at the telescope at 10h30. Alignment check. It was quite off (say 2-3cm on the input window). The spot isn't at the center of M5. I think that's OK. Also a few mm off (along y, a bit too high, in x it is OK) the center of M6, but I have adjusted M5 to shot on the center of the input window. Santiago played a bit with the compressed air controller but we decided it was good that way. We decided in any case to check again the alignement (but without touching if possible) on Tuesday before starting for real.
We have now a direct cable from the main NIKA console to the NIKA switch in the computers room. We spent some time playing for feeding the cable below the floor. Not so easy but the cable now is in place and it's comfortable.
Andrea in remote launched the MACs 35, 33 and 10. In local The acquisition seems OK. It's tuning. The configuration is that data are saved by archeops9 and MiniMac2 on Sami. Archeops9 saves data in local too.
Lost connection to the cryostat first, then to the electronics. In both cases the RJ45 connectors are really not very nice. Now it's OK but at any touch we risk the The strange 1-2-3 noise disappeared. I decide to regulate the temperature at 150mK as in run8.
The noise on the resonances seems quite OK at first view.
Barbara and Alessandro arrived at the telescope at 10h30. Alignment check. It was quite off (say 2-3cm on the input window). The spot isn't at the center of M5. I think that's OK. Also a few mm off (along y, a bit too high, in x it is OK) the ce
17h45. Raining. We wait.
We went very briefly to the sky for a couple of pointings. Just to see how off we are. Nicolas and Remi realised that there was a problem in the 1mm data in these scans. Despite horrible conditions the 2mm Uranus was OK and pretty close to the center of the array.
Saturday 8th November 2014
Nothing happened.
Sunday 9th November 2014
11h. We try to react to a GRB. Good excercise despite very low elevation (<20deg). Running to the cabin, turning the mirror and starting. We go to 3C279 fora focus liss. Found a FOCUS of -1.2mm while we where at -2mm. The quasar is easily seen on time traces at 2mm and 1mm.
Figure. Noise at 2mm taken during GRB observations (EL = 12 deg !!).
PUT LN2 in front of the window. Offsets are -250kHz and -450kHz. During the first slot (taumeter indicating roughly 0.15) we had up to -190KHz and -430KHz. So a bit better than LN2 but not that much. REMEMBER: zero has changed.
Monday 10th November 2014
9h. Sky is clear, wonderful day.
10-12h. We switch to NIKA to point GRB141109A. A few pointings and a focus on 1055+018 before. The pointing offsets are quite high this morning 18 and 3 arcsec. I set the pointing to that, focus to -1.6mm and I go to integrate on the GRB. A few glitches on some scans and only on a few pixels (3-4) of the 2mm. For the rest is good, observing more than one hour on source with tau=0.2 and at elevation of 30deg on average.
12h. Switch back to heterodyne.
A circular (GCN#17052, http://gcn.gsfc.nasa.gov/gcn3/17052.gcn3) is issued by Alberto Castro-Tirado concerning GRB141109B that we observed last night during our technical time. Total telescope time on this GRB was last night roughly 1 hour.
With the window in front of the cryostat the resonances offsets wrt the param run10.txt are -380 and -850kHz respectively.
The technical time tonight is shifted to 19-23h.
During technical time OK again for pointing, focus etc. Small offsets of the order of 2-3 arcsec. Made a geometry and two skydips under poor sky conditions. Trying then to test the new pako scripts but it was difficult to manage. Then at 22h it started snowing so we stopped.
Tuesday 11th November 2014
10h. Snowing, wind, everything is stopped for today most probably.
Wednesday 12th November 2014
Observed in reasonable conditions between 20UT and 2UT (13/11). Projects Roberta Paladini (G114) and J-F Lestrade (debris disk)
Thursday 13th November 2014
During the night problems with tuning. In the morning too. Changed on mac10 the tuning_cmd.c (acqui) the parameter
#int sueil_angle_decalage 600
Was 400 mrad before.