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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	hwp runing, Tau 0.3
184	15h47	Uranus	pointliss_pol	0 0, -1.4	hwp runing, we see Uranus well only at 1mm, very faint at 2mm ?!
185	15h59	Uranus	pointliss_pol	0 0, -1.4	hwp runing, Uranus very faint on both bands !!
186	16h06	Uranus	otf5x5_pol	0 0, -1.4	hwp runing, 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
211	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 -1.5 (prety noisy, fit not accurate, low elevation, tau = 0.45)
225	19h45	Uranus	cross	3.9 7.7, -1.5	should set pointing 4.4 8.2. Use it as 1st point of the pointing session
226-230	19h48	Uranus	focusliss	4.4 8.2, -1.5	should set focus -1.6
231	20h00	Uranus	otfgeom	4.4 8.2, -1.6
232	20h17	0133+476	cross	4.4 8.2, -1.6	should set pointing 5.6 -0.6 scan noisy, do pointliss
233	20h17	0133+476	pointliss	4.4 8.2, -1.6	should set pointing 4.9 -2
234	20h30	0316+413 (3C84)	cross	4.9 -2.0, -1.6	should set pointing 12.9 -1.7
235	20h30	0316+413 (3C84)	cross	-12.9 -1.7, -1.6	disregard, wrong pointing entered
236	20h30	0316+413 (3C84)	cross	12.9 -1.7, -1.6	should set pointing 4.7 -0.5
237	20h40	0316+413 (3C84)	cross	4.7 -0.5, -1.6	should set pointing 1.6 0.6 pointing varies a lot; due to wind ???
238	20h45	0316+413 (3C84)	focusp	1.6 0.6, -1.6	should set focus -0.6 @ 1mm, -1.4 @ 2mm
239-243	20h52	0316+413 (3C84)	focusliss	1.6 0.6, -1.0	should set focus -2.0 @ 1mm, -1.3 @ 2mm -> huge fluctuation @ 1mm wrt scan 238
244	21h06	0316+413 (3C84)	cross	1.6 0.6, -1.3	should set pointing 2.0 1.3, tau 0.7, wind peak 10m/s, pointing session compromised ?
245	21h16	DIY-Tip	skydip_up	2.0 1.3, -1.3	...time to think...
246	21h29	0316+413 (3C84)	otfgeom	2.0 1.3, -1.3	... conditions really limit for a pointing session... try otfgeom on this bright quasar
247	21h49	0316+413 (3C84)	otfgeom	2.0 1.3, -1.3	pb with pipeline (Variable is undefined: BOX.)... take another otf for redundency ... NIKEL 1 might have crashed during the scan
248	22h33	0716+714	cross	2.0 1.3, -1.3	conditions too bad for pointing session & for geometries. go have a look to M82, then GN20 nearby. scan too bad
249	22h33	0716+714	cross	2.0 1.3, -1.3	should set pointing -0.2 -0.9 ... but noisy scan
250	22h40	0716+714	pointliss	2.0 1.3, -1.3	should set pointing -0.1 -0.5
251	22h46	0716+714	focusp	-0.1 -0.5, -1.3	should set focus -1.3
252	22h50	M82	otf3x3	-0.1 -0.5, -1.3	will we see the supernova ?
253	22h59	M82	otf3x3	-0.1 -0.5, -1.3
254	23h05	M82	otf3x3	-0.1 -0.5, -1.3
255	23h15	M82	otf3x3	-0.1 -0.5, -1.3	maps hawful, even co-added
256	23h23	1044+719	pointliss	-0.1 -0.5, -1.3	too faint
257	23h28	(B)1039+811	pointliss	-0.1 -0.5, -1.3	raw data file apparently not written ! => due to timing issue, need to rename xxxx_tim file to recover the data (see Alain's email)
258	23h35	(B)1039+811	pointliss	-0.1 -0.5, -1.3	too faint too ... impossible to make pointing correction
259	23h40	GN20	faintlissfast	-0.1 -0.5, -1.3	see how we integrate down very faint source for the remaining 20 min (for noise analysis) with Tau 0.8...
260	23h45	GN20	faintlissfast	-0.1 -0.5, -1.3	do the fast Lissajou rather than slow to beat skynoise ... elevation = 40 deg but many tracking errors 2-5"
261	23h50	GN20	faintlissfast	-0.1 -0.5, -1.3	raw data file apparently not written ! => due to timing issue, need to rename xxxx_tim file to recover the data (see Alain's email)
262	23h58	GN20	faintliss1	-0.1 -0.5, -1.3	same size twice slower: tracking errors ~

-  ⇤ ← Revision 1 as of 2014-01-24 15:12:04 → 
  Size: 1632
  Editor: NikaBolometer
  Comment:
+   ← Revision 46 as of 2014-01-25 22:54:43 → ⇥
  Size: 8653
  Editor: NikaBolometer
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 27:
-||'''Scan'''||'''UT'''||'''Source'''||'''Command'''    ||'''Pointing X,Y, Focus'''|| '''Comment'''  ||
||       ||  15h20 ||  Uranus    || Track -200 -200 ||  0  0, -1.4       || usefull to 1st tune of resonances. OFFSET -37 -30 /sys Nasmyth ||
||       ||  15h24 ||  Uranus    || pointliss       ||  0  0, -1.4       || Tau   ||
+||'''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 || hwp runing, Tau 0.3 ||
|| 184 || 15h47 || Uranus || pointliss_pol || 0 0, -1.4 || hwp runing, we see Uranus well only at 1mm, very faint at 2mm ?! ||
|| 185 || 15h59 || Uranus || pointliss_pol || 0 0, -1.4 || hwp runing, Uranus very faint on both bands !! ||
|| 186 || 16h06 || Uranus || otf5x5_pol || 0 0, -1.4 || hwp runing, 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 ||
|| 211 || 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 -1.5 (prety noisy, fit not accurate, low elevation, tau = 0.45) ||
|| 225 || 19h45 || Uranus || cross || 3.9 7.7, -1.5 || should set pointing 4.4 8.2. Use it as 1st point of the '''''pointing session''''' ||
|| 226-230 || 19h48 || Uranus || focusliss || 4.4 8.2, -1.5 || should set focus -1.6 ||
|| 231 || 20h00 || Uranus || otfgeom || 4.4 8.2, -1.6 || ||
|| 232 || 20h17 || 0133+476 || cross || 4.4 8.2, -1.6 || should set pointing 5.6 -0.6 scan noisy, do pointliss ||
|| 233 || 20h17 || 0133+476 || pointliss || 4.4 8.2, -1.6 || should set pointing 4.9 -2 ||
|| 234 || 20h30 ||0316+413 (3C84) || cross || 4.9 -2.0, -1.6 || should set pointing 12.9 -1.7 ||
|| 235 || 20h30 ||0316+413 (3C84) || cross ||-12.9 -1.7, -1.6 || disregard, wrong pointing entered ||
|| 236 || 20h30 ||0316+413 (3C84) || cross || 12.9 -1.7, -1.6 || should set pointing 4.7 -0.5 ||
|| 237 || 20h40 ||0316+413 (3C84) || cross || 4.7 -0.5, -1.6 || should set pointing 1.6 0.6 ''pointing varies a lot; due to wind ???'' ||
|| 238 || 20h45 ||0316+413 (3C84) || focusp || 1.6 0.6, -1.6 || should set focus -0.6 @ 1mm, -1.4 @ 2mm ||
|| 239-243 || 20h52 ||0316+413 (3C84) || focusliss || 1.6 0.6, -1.0 || should set focus -2.0 @ 1mm, -1.3 @ 2mm -> huge fluctuation @ 1mm wrt scan 238||
|| 244 || 21h06 ||0316+413 (3C84) || cross || 1.6 0.6, -1.3 || should set pointing 2.0 1.3, '''''tau 0.7, wind peak 10m/s, pointing session compromised ?''''' ||
|| 245 || 21h16 || DIY-Tip || skydip_up || 2.0 1.3, -1.3 || ...time to think... ||
|| 246 || 21h29 ||0316+413 (3C84) || otfgeom || 2.0 1.3, -1.3 || ... conditions really limit for a pointing session... try otfgeom on this bright quasar ||
|| 247 || 21h49 ||0316+413 (3C84) || otfgeom || 2.0 1.3, -1.3 || pb with pipeline (Variable is undefined: BOX.)... take another otf for redundency ... NIKEL 1 might have crashed during the scan ||
|| 248 || 22h33 || 0716+714 || cross || 2.0 1.3, -1.3 || '''''conditions too bad for pointing session & for geometries'''''. go have a look to M82, then GN20 nearby. scan too bad ||
|| 249 || 22h33 || 0716+714 || cross || 2.0 1.3, -1.3 || should set pointing -0.2 -0.9 ... but noisy scan ||
|| 250 || 22h40 || 0716+714 || pointliss || 2.0 1.3, -1.3 || should set pointing -0.1 -0.5 ||
|| 251 || 22h46 || 0716+714 || focusp || -0.1 -0.5, -1.3 || should set focus -1.3 ||
|| 252 || 22h50 || M82 || otf3x3 || -0.1 -0.5, -1.3 || will we see the supernova ? ||
|| 253 || 22h59 || M82 || otf3x3 || -0.1 -0.5, -1.3 || ||
|| 254 || 23h05 || M82 || otf3x3 || -0.1 -0.5, -1.3 || ||
|| 255 || 23h15 || M82 || otf3x3 || -0.1 -0.5, -1.3 || maps hawful, even co-added ||
|| 256 || 23h23 || 1044+719 || pointliss || -0.1 -0.5, -1.3 || too faint ||
|| 257 || 23h28 ||(B)1039+811 || pointliss || -0.1 -0.5, -1.3 || ''raw data file apparently not written !'' => due to timing issue, need to rename xxxx_tim file to recover the data (see Alain's email)||
|| 258 || 23h35 ||(B)1039+811 || pointliss || -0.1 -0.5, -1.3 || too faint too ... impossible to make pointing correction ||
|| 259 || 23h40 || GN20 || faintlissfast || -0.1 -0.5, -1.3 || see how we integrate down very faint source for the remaining 20 min (for noise analysis) with Tau 0.8... ||
|| 260 || 23h45 || GN20 || faintlissfast || -0.1 -0.5, -1.3 || do the fast Lissajou rather than slow to beat skynoise ... elevation = 40 deg but many tracking errors 2-5"||
|| 261 || 23h50 || GN20 || faintlissfast || -0.1 -0.5, -1.3 || ''raw data file apparently not written !'' => due to timing issue, need to rename xxxx_tim file to recover the data (see Alain's email)||
|| 262 || 23h58 || GN20 || faintliss1 || -0.1 -0.5, -1.3 || same size twice slower: tracking errors ~ ||