NK2014_Jan26 - www.iram.es Main Wiki

NIKA, January 26th, 2014 / S7

Back to list of day to day logbook of observations

2014-01-26

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

Programm for today. Yesterday we could do only a small fraction of the reorganised observing plan (see Jan 25 sheet 6 logbook), so resume it. We need Juan Peñalver to change the lateral focus, so keep the 3D focus on beam maps for tomorrow. We also need to fulfil important missing observations for polar. After looking at visibility plot of Crab and quasars observed on Jan 24, and view the still missing continuum observations important for full insrumental characterization I (SL) propose the following program. Weather forecast very good, so hopefully for once we can do all the program.

Polariser on. Pointing and focus and pointliss on 3C454.3 that was observed on Jan 24, observe also 2013+370. If done quickly at the beginning of the session they will be at higher elevation than on Jan 24 (probably keep 3C84 for latter).
Polariser on. Observe Crab and CasA.
Polariser on. Skydip. Dismount polar at sunset.
Continuum. Scan of MWC349 before it set.
Focus and Beam maps on Uranus.
Pointing session.
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 that will have not already set: W3OH, CepA, NGC7538.
Check geom on CygA (and possibly M82 again).
(if enough time: Test various OTF Zig Zag orientations; in particular Ra Dec scan on NGC891).
(if enough time: Deep integration).
Keep last 1.5 hour to mount again the polariser, and observe again 3C84, Crab, and CasA, and observe KL(ORI).

Remark for NIKA staff: Good data are on RAW_X10

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

Scan	UT	Source	Command	Pointing X,Y, Focus	Comment
185	15h13	3C454.3	cross	0 0, -1.4	OFFSET -37 -30 /sys Nasmyth. Polarisation grid & HWP mounted, switched off. error: -1 blocs manquants
186	15h17	3C454.3	cross	0 0, -1.4	say pointing -1.8 -2.5
187	15h19	3C454.3	pointliss	-1.8 -2.5, -1.4	say pointing -2.1 -2.0
188	15h22	3C454.3	focusp	-2 -2, -1.4	say focus -1.17 @ 1mm (-0.78 @ 2mm)
189-193	15h29	3C454.3	focusliss	-2 -2, -1.17	say focus -0.78 @ 1mm (-0.79 @ 2mm)
194	15h40	3C454.3	cross	-2 -2, -0.8	say pointing -2.9 0.7
195	15h45	3C454.3	cross	-2.9 0.7, -0.8	HWP switched on (rotating). say pointing -3.8 -0.1 (fit less accurate than with HWP off)
196	15h45	3C454.3	pointliss_pol	-2.9 0.7, -0.8	HWP on.
197	15h50	3C454.3	pointliss_pol	-2.9 0.7, -0.8	HWP on.
198	15h55	3C454.3	pointliss_pol	-2.9 0.7, -0.8	HWP on.
199	16h00	3C454.3	otf3x3	-2.9 0.7, -0.8	HWP on. For comparison with pointliss_pol
200	16h15	2013+370	cross	-2.9 0.7, -0.8	HWP on.
201	16h20	2013+370	pointliss_pol	-2.9 0.7, -0.8	HWP on.
202	16h25	2013+370	cross	-2.9 0.7, -0.8	HWP off. say pointing 1.3 -1.1
203	16h20	2013+370	pointliss_pol	1.3 -1.1, -0.8	HWP on.
204	16h25	2013+370	pointliss_pol	1.3 -1.1, -0.8	HWP on.
205	16h30	2013+370	otf3x3	1.3 -1.1, -0.8	HWP on. For comparison with pointliss_pol
206	16h40	CasAW	otf4x2	1.3 -1.1, -0.8	HWP on. tau = 0.25
207	16h50	2200+420	cross	1.3 -1.1, -0.8	HWP off. say pointing .. too noisy, source is supposed to be ~4 Jy @ 2mm !
208	16h50	2200+420	pointliss	1.3 -1.1, -0.8	HWP off. say pointing -1.7 -1.3
209-213	16h50	2200+420	focusliss	1.3 -1.1, -0.8	HWP off. say focus -0.88
214	17h00	CasAW	otf4x2	1.3 -1.1, -0.88	HWP on. Canceled (forgot set pointing)
215	17h00	CasAW	otf4x2	-1.7 -1.3, -0.88	HWP on.