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NIKA, January 25th, 2014 / S6

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2014-01-25

TAPAS database, will be completed on Monday. Continue with manual log below.

Programm for today. View the poor weather conditions that prevented us to follow the program listed in the observation plan, we (SL) reorganise it. We will do continuum observations only (without the polariser).

Skydip.
Focus and Beam maps on Uranus. Centered on the refence detector: #494 of the 2mm array (#5 of the 1mm array is very close to it).
If the weather allows, resume pointing session.
If the weather allows, beam maps on Uranus: on focus 1st then investigation of 3D focus (=> 18 scans).
If weather not excellent but good enough for observations: quick test for the TAPAS data base, change project from t21 to 193-13 (Israel's project for the pool in Feb) do a Lissajou scan on any bright source nearby and check that the scan appears in the right table of the pool database. Then back to project t21.
If weather not excellent but good enough for observations: photometric calibration on primary and secondary calibrators with Lissajous scans and small OTF maps (Az El and/or few RA DEC for testing). Some secondary to observe: W3OH, K3-50A, MWC349, CRL2688, NGC7027, CepA, NGC7538.
If weather not excellent but good enough for observations: check geom on CygA (and possibly M82 again).
If weather not excellent but good enough for observations: test various scan speed 10, 20, 30, 40, 50, 60 arcsec/s, first on bright quasar with geom (e.g. 3C454.3, 3C84, OJ287, 3C111), then on extended sources with large OTF zigzag (e.g. CygA, CasA, Crab, possibly M82 again).
If weather not excellent but good enough for observations: test various OTF Zig Zag orientations; in particular Ra Dec scan on NGC891.

Note: view the numerous polar obs done yesterday in rather good weather conditions, no polar observations foreseen today. Wait for Feedback from NIKA team in Grenoble for possible plan of additional polar obs tomorrow or day after tomorrow.

Remark for NIKA staff: Good data are on RAW_X9

OFFSET -37 -30 /sys Nasmyth => select detector 494 as reference

Scan	UT	Source	Command	Pointing X,Y, Focus	Comment
118-119	15h30	DIY-Tip	skydip_updown	0 0, -1.4	OFFSET -37 -30 /sys Nasmyth. error in scan 118: "-1 blocs manquants". pipeline can't fit skydip down (scan 119)
120	15h45	DIY-Tip	skydip_up	0 0, -1.4	find tau 0.44 @ 1mm ~ tau meter, 0.36 @ 2mm
121	15h55	Uranus	cross	0 0, -1.4	find pointing -55 -35 ! Normal: typo in Nasmyth offsets: -37 30 => OFFSET -37 -30 /sys Nasmyth
122	16h00	Uranus	cross	0 0, -1.4	find pointing -2.3 -1.6 => OK now these values are in the expected range.
123	16h06	Uranus	pointliss	-2.3 -1.6, -1.4	find pointing -5 -1.1 (accumulate stat for comparison between both method)
124	16h10	Uranus	focusp	-5 -1.1, -1.4	find focus -1.42 @ 1mm, -0.97 @ 2mm. Very noisy; turbulent blue sky, wind.
125-129	16h16	Uranus	focusliss	-5 -1.1, -1.4	find focus -1.23 @ 1mm, -0.56 @ 2mm (accumulate stat for comparison between both method)
130	16h25	Uranus	cross	-5 -1.1, -1.2	find pointing -4.6 2.1
131	16h30	Uranus	pointliss	-5 -1.1, -1.2	find pointing -5.5 3.2. Alain update RAW_X10 to test fix of file timing problem encountered yesterday.
132	16h35	Uranus	otfgeom	-5 3, -1.2
133	16h35	Uranus	otfgeom	-5 3, -1.2	good file in X33, some "?" in the data control screen of X9 and X10 = some corruptions in the files
134	16h50	Uranus	cross	-5 3, -1.2	find pointing -3.2 3.7
135	16h50	Uranus	pointliss	-5 3, -1.2	find pointing -2.2 4.1
136	17h10	Uranus	focusp	-2.8 3.9, -1.2	find focus -1.07 @ 1mm, -1.08 @ 2mm
137-141	17h20	Uranus	focusliss	-2.8 3.9, -1.2	not usable. we have found the corruption problem: do not transfert files from X9 and X10 for local analysis during a scan
142-146	17h30	Uranus	focusliss	-2.8 3.9, -1.2	find focus -0.3 @ 1mm, -0.4 @ 2mm => 1mm shift on M2 is prety big (Zemax shows huge effect on beam); is it due to sunset ?