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NIKA, January 24th, 2014 / S5

Back to list of day to day logbook of observations

2014-01-24

We use both the manual log below and the tapas database that automatically fills scans table with the scan informations.
So please login with the t21 acount and its usual password (durc***9) to the TAPAS database.
For now the TAPAS is not fully filled in real time, but completed with all the scans everyday by Pablo on the morning following the observations. So we keep a manual log below, but in a simplified table with the comments and only the most useful scan info.

Programm for today:

We start with the polariser mounted and running.
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).
Polar Lissajous on several quasars
Finish polar session at sunset with beam map on Uranus and skydip.
Dismount polariser just after sunset.
Beam map on Uranus
Resume pointing session
Beam map on Uranus or a bright quasar.
Integration on a very weak source to measure the noise.

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
182	15h34	DIY-Tip	skydip_up	0 0, -1.4	OFFSET -37 -30 /sys Nasmyth
183	15h45	Uranus	track	0 0, -1.4	Tau 0.3
184	15h47	Uranus	pointliss_pol	0 0, -1.4	we see Uranus well only at 1mm, very faint at 2mm ?!
185	15h59	Uranus	pointliss_pol	0 0, -1.4	Uranus very faint on both bands !!
186	16h06	Uranus	otf5x5_pol	0 0, -1.4	check if pb due to scan type...
187	16h16	Uranus	pointliss_pol	0 0, -1.4	rotating hwp stoppted: it works => pb due to processing of lockin
188	16h30	Uranus	cross	0 0, -1.4	rotating hwp restarted: same pb as with pointliss. 1mm say pointing 0 3.4
189	16h30	Uranus	focusp	0 3.4, -1.4	hwp runing, take scan for offline test once lockin fixed
190-191	16h50	Uranus	focusliss	0 3.4, -1.4	hwp runing, take scan for offline test once lockin fixed canceled, hwp stopped during 2nd scan
192-196	16h54	Uranus	focusliss	0 3.4, -1.4	hwp runing, take scan for offline test once lockin fixed, work OK at 1mm -> should set focus -1.2
197	17h03	Uranus	focusp	0 3.4, -1.4	hwp stopped, should set focus -1.4 at 1mm, -1.0 at 2mm -> keep best at 1mm
198	17h07	Uranus	cross	0.7 4.3, -1.4	hwp stopped, should set pointing 0.7 4.3
199	17h14	Uranus	otfgeom_pol	0.7 4.3, -1.4	hwp runing, canceled started oft5x5_pol instead of otfgeom_pol
200	17h14	Uranus	otfgeom_pol	0.7 4.3, -1.4	hwp runing,
201	17h40	3C454.3	track	0.7 4.3, -1.4	hwp runing,
202	17h46	3C454.3	pointliss_pol	0.7 4.3, -1.4	hwp runing, reduced pol scans are currently too weak to compute reliable pointings corrections
203	17h50	2013+270	track	0.7 4.3, -1.4	hwp runing,
204	17h55	2013+270	pointliss_pol	0.7 4.3, -1.4	hwp runing,
205	17h55	2013+270	pointliss_pol	0.7 4.3, -1.4	hwp runing,
206	18h00	MWC349	track	0.7 4.3, -1.4	hwp runing,
207	18h02	MWC349	pointliss_pol	0.7 4.3, -1.4	hwp runing, canceled pb subref motor
208	18h05	MWC349	pointliss_pol	0.7 4.3, -1.4	hwp runing,
209	18h15	3C84	track	0.7 4.3, -1.4	hwp runing, canceled telescope error
210	18h15	3C84	track	0.7 4.3, -1.4	hwp runing, canceled telescope error
209	18h15	3C84	track	0.7 4.3, -1.4	hwp runing, When sources are ~ >1 degree appart, track is not necessary !
212	18h20	3C84	pointliss_pol	0.7 4.3, -1.4	hwp runing,
213	18h25	3C111	pointliss_pol	0.7 4.3, -1.4	hwp runing,
214-218	18h35	Uranus	focusliss	0.7 4.3, -1.4	hwp runing, should set focus -1.4 at 1mm, -1.0 at 2mm -> keep best at 1mm
219	18h45	Uranus	otfgeom	0.7 4.3, -1.4	hwp runing,
220	19h00	3C454.3	pointliss_pol	0.7 4.3, -1.4	hwp runing,
221	19h10	DIY-Tip	skydip_up	0.7 4.3, -1.4	hwp runing, END of Polar session.
222	19h29	Uranus	cross	0.7 4.3, -1.4	hwp stopped, polariser dismounted. bad scan, resonances lost
223	19h34	Uranus	cross	0.7 4.3, -1.4	should set pointing 3.9 7.7
224	19h40	Uranus	focusp	3.9 7.7, -1.4	should set focus
225	19h45	Uranus	cross	3.9 7.7, -1.4	should set pointing 3.9 7.7
226	19h48	Uranus	otfgeom	3.9 7.7, -1.4

-  ⇤ ← Revision 16 as of 2014-01-24 19:08:11 → 
  Size: 5348
  Editor: NikaBolometer
  Comment:
+   ← Revision 17 as of 2014-01-24 19:42:31 → ⇥
  Size: 5916
  Editor: NikaBolometer
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 59:
+||  222     ||  19h29 ||  Uranus    || cross         || 0.7  4.3,  -1.4       || hwp stopped, polariser dismounted. '''bad scan, resonances lost''' ||
||  223     ||  19h34 ||  Uranus    || cross         || 0.7  4.3,  -1.4       || should set pointing 3.9 7.7 ||
||  224     ||  19h40 ||  Uranus    || focusp        || 3.9  7.7,  -1.4       || should set focus  ||
||  225     ||  19h45 ||  Uranus    || cross         || 3.9  7.7,  -1.4       || should set pointing 3.9 7.7 ||
||  226     ||  19h48 ||  Uranus    || otfgeom       || 3.9  7.7,  -1.4       ||   ||