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NIKA November 2012 S1

Back to list of day to day logbook of observations

2013-06-11

Cryostat Temperature: 216mK (naturally set by settings of 3He circulation [no heater] trying to mitigate oscillation due to leak).
Arrays status tonight: pixels 2mm - xxx noise; XX pixels 1mm xxx noise (to be determined)

Modulation frequency: 8kHz 1mm, 4kHz 2mm

Opacity is measurd with the new taumeter at 225 GHz

Nasmyth offsets : 0, 0

Set pointing : 0, 0

Set Focus : -2.40 mm

Quick description of the session: Test the Pako sequences and data flows.

Scan	UT	Source	Command	Az	El	Pointing X, Y, Focus	Tau225	Comment
140	~ 16h	Mars	Track					closed window, test data tranfert
141	16h05	Mars	Cross	277.687	26.626	0.0 0.0 -2.4	0.862	opened window, test arrays frequencies
142	16h30	Mars	OTF_geom	277	26.6	0.0 0.0 -2.4	0.85	Juan put Nasmyth offset to 0 in pointing model; this is our starting point before the session ; tuning during the scan
143	16h34	Mars	otf_geom	281	20.6	0.0 0.0 -2.4	0.85	still tests and tunes on arrays (after scan), some resonances lost, auto tune was not on, find again by hand...
144	17h09	3C279	track	130	33.6	0.0 0.0 -2.4	0.828	Expected flux: 11-20 Jy
145	17h15	3C279	otf_geom	131.4	34.0	0.0 0.0 -2.4	0.822	looks like some resonances still lost, do manual sweep to get them back while otf being processed and analyzed
146	17h45	3C279	otf_geom	134	36	0.0 0.0 -2.4	0.814	All resonances are found. Auto tuning on from now on
147	17h57	3C279	pointing_cross	140	39	0.0 0.0 -2.4	0.814	to test cross scan and file while RA & NP process the otf to determine the ref pix
148	18h01	3C279	pointing_lissajous	140	39	0.0 0.0 -2.4	0.814	to test cross scan and file while RA & NP process the otf to determine the ref pix ; cryostat warming up a bit
149	18h02	3C279	pointing_lissajous	140	39	0.0 0.0 -2.4	0.814	Testing small 1.5'x1.5' lissajous map
150	18h04	3C279	pointing_lissajous	149	42	0.0 0.0 -2.4	0.814
151	18h16	3C279	faintSource_lissajous	149	42	0.0 0.0 -2.4	0.76	Same lissajous curve parameter as above, longer integration (to be used typically on faint sources)
152	18h31	Az=150	diydown (skydip)	150	65	0.0 0.0 -2.4	0.76	Track - testing skydip with Track at starting elevation to let the KID be tuned
153	18h32	Az=150	diydown (skydip)	150	65	0.0 0.0 -2.4	0.76	Track - testing skydip with Track at starting elevation to let the KID be tuned
154	18h33	Az=150	diydown (skydip)	150	65	0.0 0.0 -2.4	0.76	diy command failed at the first commanded elevation was 120 degrees!! My mistake, the original script was wrongly modified
155	18h35	Az=180	diyup (skydip)	180	20	0.0 0.0 -2.4	0.76	testing skydip with Track at starting elevation to let the KID be tuned
156	18h38	Az=180	diyup (skydip)	180	20	0.0 0.0 -2.4	0.76	Actual skydip -- KIDs have lost the resonances...
157	18h38	Az=180	diyup (skydip)	180	20	0.0 0.0 -2.4	0.76	Track to tune the KIDs at 20 degrees elevation, but telescope go back to 10 degrees after
158	19h03	Az=180, el=20	diyup (skydip)	180	20	0.0 0.0 -2.4	0.76	Track to tune the KIDs at 20 degrees elevation (specifying a source at el.=20)
159	19h10	Az=180, el=20	diyup (skydip)	180	20	0.0 0.0 -2.4	0.76	seems to have worked ok
160	19h19	3C279	track	169	46	0.0 0.0 -2.4	0.752	Reference pixel is 434 and 28 (offline team NP, RA, AC, )
161	19h26	3C279	pointing_cross	172	47	0.0 0.0 -2.4	0.760	Try to find a pointing correction
162	19h30	3C279	pointing_cross	172	47	0.0 0.0 -2.4	0.760	Try to find a pointing correction
163	19h41	3C279	pointing lissajou	175	47	0.0 0.0 -2.4	0.760	Try to find a pointing correction
164	19h50	3C279	pointing lissajou	182	47	0.0 0.0 -2.4	0.760	Try to find a pointing correction
165	20h05	3C279	pointing cross	185.5	46.9	+25 0.0 -2.4	0.760	Try to find a pointing correction
166	20h05	3C279	pointing cross	185.5	46.9	+25 +25 -2.4	0.760	Try to find a pointing correction ; pointing requested too big (>50) ; go try radio alignment even if sky not great, screws: Corridor side = 4.12, Wall side = 4.02
167	20h49	3C279	pointing cross	201	44.8	+25 +25 -2.4	0.760	radio alignment was actually doable, screws: C = 3.70 => gain ~1kHz, W = 3.02 => gain <0.5 kHz ; maybe problem at the end of the scan
167	20h49	3C279	pointing cross	201	44.8	+25 +25 -2.4	0.760	=> radio alignment get better background & better pointing (now pointing offset requested are in range)
169	21h10	3C279	pointing cross	207	43.0	-5 -15 -2.4	0.760
170	21h12	3C279	pointing cross	207	43.0	-20 -10 -2.4	0.750	set pointing variation is very big => axis of rotation is far from our ref pixel ; check other pixels => 181 and 505 seem
171	21h26	3C279	pointing cross	212	41.3	-20 -10 -2.4	0.750	we center on pixels 181, 505

-  ⇤ ← Revision 10 as of 2013-06-11 17:16:16 → 
  Size: 1587
  Editor: NikaBolometer
  Comment:
+   ← Revision 29 as of 2013-06-11 21:32:37 → ⇥
  Size: 6637
  Editor: NikaBolometer
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 9:
+Modulation frequency: 8kHz 1mm, 4kHz 2mm

Opacity is measurd with the new taumeter at 225 GHz
-Line 22:
+Line 25:
-||     143  ||  16h34 ||  Mars      || otf_geom        || 281 || 20.6 ||     0.0 0.0 -2.4   ||  0.85     ||   ||
||     144  ||  17h09 ||  3c279      || track        || 130  ||  33.6 ||     0.0 0.0 -2.4   ||  0.828     || Expected flux: 11-20 Jy  ||
||     145  ||  17h15 ||  3c279      ||   otf_geom      || 131.4  ||  34.0 ||     0.0 0.0 -2.4   ||  0.822     || Expected flux: 11-20 Jy  ||
+||     143  ||  16h34 ||  Mars      || otf_geom        || 281 || 20.6 ||     0.0 0.0 -2.4   ||  0.85     || still tests and tunes on arrays (after scan), some resonances lost, auto tune was not on, find again by hand...   ||
||     144  ||  17h09 ||  3C279      || track        || 130  ||  33.6 ||     0.0 0.0 -2.4   ||  0.828     || Expected flux: 11-20 Jy  ||
||     145  ||  17h15 ||  3C279      ||   otf_geom      || 131.4  ||  34.0 ||     0.0 0.0 -2.4   ||  0.822     || looks like some resonances still lost, do manual sweep to get them back while otf being processed and analyzed ||
||     146  ||  17h45 ||  3C279      || otf_geom      || 134  ||  36 ||     0.0 0.0 -2.4   ||  0.814     || All resonances are found. Auto tuning on from now on||
||     147  ||  17h57 ||  3C279      || pointing_cross|| 140  ||  39 ||     0.0 0.0 -2.4   ||  0.814     || to test cross scan and file while RA & NP process the otf to determine the ref pix||
||     148  ||  18h01 ||  3C279      || pointing_lissajous|| 140  ||  39 ||     0.0 0.0 -2.4   ||  0.814     || to test cross scan and file while RA & NP process the otf to determine the ref pix ; cryostat warming up a bit||
||     149  ||  18h02 ||  3C279      || pointing_lissajous|| 140  ||  39 ||     0.0 0.0 -2.4   ||  0.814     || Testing small 1.5'x1.5' lissajous map||
||     150  ||  18h04 ||  3C279      || pointing_lissajous|| 149  ||  42 ||     0.0 0.0 -2.4   ||  0.814     || ||
||     151  ||  18h16 ||  3C279      || faintSource_lissajous|| 149  ||  42 ||     0.0 0.0 -2.4   ||  0.76     || Same lissajous curve parameter as above, longer integration (to be used typically on faint sources)||
||     152  ||  18h31 ||  Az=150      || diydown (skydip)|| 150  ||  65 ||     0.0 0.0 -2.4   ||  0.76     ||Track - testing skydip with Track at starting elevation to let the KID be tuned||
||     153  ||  18h32 ||  Az=150      || diydown (skydip)|| 150  ||  65 ||     0.0 0.0 -2.4   ||  0.76     ||Track - testing skydip with Track at starting elevation to let the KID be tuned||
||     154  ||  18h33 ||  Az=150      || diydown (skydip)|| 150  ||  65 ||     0.0 0.0 -2.4   ||  0.76     ||diy command failed at the first commanded elevation was 120 degrees!! My mistake, the original script was wrongly modified||
||     155  ||  18h35 ||  Az=180      || diyup (skydip)|| 180  ||  20 ||     0.0 0.0 -2.4   ||  0.76     ||testing skydip with Track at starting elevation to let the KID be tuned||
||     156  ||  18h38 ||  Az=180      || diyup (skydip)|| 180  ||  20 ||     0.0 0.0 -2.4   ||  0.76     || Actual skydip  --  KIDs have lost the resonances...||
||     157  ||  18h38 ||  Az=180      || diyup (skydip)|| 180  ||  20 ||     0.0 0.0 -2.4   ||  0.76     || Track to tune the KIDs at 20 degrees elevation, but telescope go back to 10 degrees after||
||     158  ||  19h03 ||  Az=180, el=20      || diyup (skydip)|| 180  ||  20 ||     0.0 0.0 -2.4   ||  0.76     || Track to tune the KIDs at 20 degrees elevation (specifying a source at el.=20)||
||     159  ||  19h10 ||  Az=180, el=20      || diyup (skydip)|| 180  ||  20 ||     0.0 0.0 -2.4   ||  0.76     || seems to have worked ok||
||     160  ||  19h19 ||  3C279      || track        || 169  ||  46 ||     0.0 0.0 -2.4   ||  0.752     ||  Reference pixel is 434 and 28 (offline team NP, RA, AC, ) ||
||     161  ||  19h26 ||  3C279      || pointing_cross  || 172  ||  47 ||     0.0 0.0 -2.4   ||  0.760     ||  Try to find a pointing correction ||
||     162  ||  19h30 ||  3C279      || pointing_cross  || 172  ||  47 ||     0.0 0.0 -2.4   ||  0.760     ||  Try to find a pointing correction ||
||     163  ||  19h41 ||  3C279      || pointing lissajou  || 175  ||  47 ||     0.0 0.0 -2.4   ||  0.760     ||  Try to find a pointing correction ||
||     164  ||  19h50 ||  3C279      || pointing lissajou  || 182  ||  47 ||     0.0 0.0 -2.4   ||  0.760     ||  Try to find a pointing correction ||
||     165  ||  20h05 ||  3C279      || pointing cross  || 185.5  ||  46.9 ||     +25 0.0 -2.4   ||  0.760     ||  Try to find a pointing correction ||
||     166  ||  20h05 ||  3C279      || pointing cross  || 185.5  ||  46.9 ||     +25 +25 -2.4   ||  0.760     ||  Try to find a pointing correction ; pointing requested too big (>50) ; go try radio alignment even if sky not great, screws: Corridor side = 4.12, Wall side = 4.02 ||
||     167  ||  20h49 ||  3C279      || pointing cross  || 201  ||  44.8 ||     +25 +25 -2.4   ||  0.760     ||  radio alignment was actually doable, screws: C = 3.70 => gain ~1kHz, W = 3.02 => gain <0.5 kHz ; maybe problem at the end of the scan ||
||     167  ||  20h49 ||  3C279      || pointing cross  || 201  ||  44.8 ||     +25 +25 -2.4   ||  0.760     || => radio alignment get better background & better pointing (now pointing offset requested are in range) ||
||     169  ||  21h10 ||  3C279      || pointing cross  || 207  ||  43.0 ||     -5 -15 -2.4   ||  0.760     ||   ||
||     170  ||  21h12 ||  3C279      || pointing cross  || 207  ||  43.0 ||     -20 -10 -2.4   ||  0.750     || set pointing variation is very big => axis of rotation is far from our ref pixel ; check other pixels => 181 and 505 seem  ||
||     171  ||  21h26 ||  3C279      || pointing cross  || 212  ||  41.3 ||     -20 -10 -2.4   ||  0.750     ||  we center on pixels 181, 505 ||