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| ||332 || 22:23 || Uranus || @otfgeom_25 || 139 || 51 || 0,0,-1.8 || 0.6 || 20 meas/turn, 25 arcsec/sec || ||333 || 22:47 || Uranus || track || 139 || 51 || 0,0,-1.8 || 0.6 || to tune|| ||334 || 22:51 || Uranus || track || 153 || 55 || 0,0,-1.8 || 0.6 || seeing the plate turning in the signal (omega, 2omega and 4omega peaks). Trying to remove polarizer|| ||335 || 22:59 || Uranus || track || 154 || 55 || 0,0,-1.8 || 0.6 || less 2omega and 4omega so they were due to polarized noise, but still a lot of noise at frequency omega (3Hz or so): will check if waveplate is well aligned. Time to use the Vernier caliper !! || ||336-340 || 23:01 || Uranus || track || 156 || 56 || 0,0,-1.8 || 0.6 || tracking uranus while andrea and alain try to fix the waveplate || |
NIKA January 20th, 2014 / S2
Back to list of day to day logbook of observations
2014-10-08
Opacity is measured with the new taumeter at 225 GHz
Nasmyth offsets : 21.2, 36.75
Set pointing : 0, 0
Set Focus : -1.8 mm
- Quick description of the session: measure polarization of quasars at various elevations and planets to test our system and calibrate
Data Repository: Raw_X35
Values in brackets [] are not updated.
Scan |
UT |
Source |
Command |
Az |
El |
Pointing X, Y, Focus |
Tau225 |
Comment |
276 |
18h20 |
1749+096 |
Track off -200 -200 |
219 |
56 |
0,0,-1.8 |
0.6 |
|
277 |
18h26 |
1749+096 |
Track off -200 -200 |
219 |
56 |
0,0,-1.8 |
0.6 |
track source waiting to start observations |
278 |
18h29 |
1749+096 |
@cross |
219 |
56 |
0,0,-1.8 |
0.6 |
croix |
279 |
18h33 |
mars |
Track off -200 -200 |
214 |
19 |
0,0,-1.8 |
0.6 |
track mars |
280 |
18h34 |
mars |
@otfgeom |
214 |
19 |
0,0,-1.8 |
0.6 |
otf mars |
281 |
18h48 |
mars |
@cross |
217 |
18 |
0,0,-1.8 |
0.6 |
cross mars : 100" away: going back to 1749 to check |
282 |
18h51 |
1749+096 |
Track off -200 -200 |
230 |
52 |
0,0,-1.8 |
0.6 |
go to 1749 to check if see source |
283 |
18h53 |
1749+096 |
@cross |
230 |
52 |
0,0,-1.8 |
0.6 |
code Nico plante: redo |
284 |
18h58 |
1749+096 |
@cross |
232 |
51 |
0,0,-1.8 |
0.6 |
source unseen: opacity ? + KIDs tuning unstable: go to brighter source |
285 |
19:02 |
3c454 |
Track off -200 -200 |
106 |
46 |
0,0,-1.8 |
0.6 |
|
286 |
19:06 |
3c454 |
@cross |
106 |
46 |
0,0,-1.8 |
0.6 |
|
287 |
19:08 |
3c454 |
@cross |
106 |
46 |
0,0,-1.8 |
0.6 |
source at more than 50" |
288 |
19:12 |
3c454 |
@otf3x3 |
109 |
49 |
0,0,-1.8 |
0.6 |
otf on 3c454: realize that source coordinates and coordinates tracked by telescope are different ? |
289 |
19:15 |
3c454 |
Track off -200 -200 |
109 |
49 |
0,0,-1.8 |
0.6 |
otf on 3c454 |
290 |
19:18 |
3c454 |
@otf3x3 |
110 |
49 |
0,0,-1.8 |
0.6 |
checking again |
291 |
19:19 |
3c454 |
@otf3x3 |
110 |
49 |
0,0,-1.8 |
0.6 |
|
292 |
19:23 |
3c454 |
@otf3x3 |
110 |
49 |
0,0,-1.8 |
0.6 |
|
293 |
19:29 |
3c454 |
@otf3x3 |
110 |
49 |
0,0,-1.8 |
0.6 |
set offset 0 0 /SYS Nasmyth |
294 |
19:29 |
3c454 |
track |
110 |
49 |
0,0,-1.8 |
0.6 |
|
295 |
19:29 |
3c454 |
@otf3x3 |
110 |
49 |
0,0,-1.8 |
0.6 |
M4 was not correctly in place !! That explains the large offsets.. |
296 |
19:42 |
3c454 |
@otf3x3 |
110 |
49 |
0,0,-1.8 |
0.6 |
New otf with correct M4 position, source seen !! |
297 |
19:45 |
3c454 |
track |
110 |
49 |
0,0,-1.8 |
0.6 |
|
298 |
19:46 |
3c454 |
track |
110 |
49 |
0,0,-1.8 |
0.6 |
Bad : Operators in the beam... |
299 |
19:46 |
3c454 |
track |
110 |
49 |
0,0,-1.8 |
0.6 |
canceled |
300 |
19:46 |
3c454 |
track |
110 |
49 |
0,0,-1.8 |
0.6 |
|
301 |
19:52 |
3c454 |
@otf3x3 |
118 |
55 |
0,0,-1.8 |
0.65 |
offset 21.2 36.75 /sys nasmyth |
302 |
19:57 |
3c454 |
track |
119 |
56 |
0,0,-1.8 |
0.65 |
|
303 |
19:52 |
3c454 |
@cross |
119 |
56 |
0,0,-1.8 |
0.65 |
offset 7.2 7.2 /sys/ nas |
304 |
20:03 |
3c454 |
@focusp |
119 |
56 |
0,0,-1.8 |
0.65 |
|
305 |
20:06 |
3c454 |
@cross |
122 |
57 |
0,0,-1.8 |
0.65 |
offset -7.2 -7.2 /sys/ nas |
306 |
20:10 |
3c454 |
@cross |
122 |
57 |
0,0,-1.8 |
0.65 |
offset 7.2 7.2 /sys/ nas |
307 |
20:14 |
3c454 |
@otfgeom |
125 |
59 |
0,0,-1.8 |
0.65 |
offset 21.2 36.75 /sys nas |
308 |
20:28 |
3c454 |
@cross |
129 |
60 |
0,0,-1.8 |
0.65 |
problem scan: can not be reduced |
309 |
20:31 |
3c454 |
@cross |
130 |
61 |
0,0,-1.8 |
0.65 |
problem scan: can not be reduced |
310 |
20:33 |
3c454 |
@cross |
130 |
61 |
0,0,-1.8 |
0.65 |
@end: set offset 28.9 42.2 |
311 |
20:39 |
3c454 |
@cross |
134 |
62 |
0,0,-1.8 |
0.65 |
@end: set offset 13.5 31.3 |
312 |
20:39 |
3c454 |
@cross |
135 |
63 |
0,0,-1.8 |
0.65 |
source seems closer but corrections given by soft do not change |
313 |
20:42 |
3c454 |
@cross |
135 |
63 |
0,0,-1.8 |
0.65 |
|
314 |
20:48 |
3c454 |
@cross |
135 |
63 |
0,0,-1.8 |
0.65 |
trying to do cross with offsets 0,0 - @end: set offset 0 15 seems good enough: set pointing -19.7 11.4 |
315 |
21:00 |
3c454 |
@cross |
144 |
65 |
0,0,-1.8 |
0.65 |
source is centered |
316 |
21:03 |
uranus |
track -200 -200 |
117 |
39 |
0,0,-1.8 |
0.65 |
|
317 |
21:03 |
uranus |
@cross |
118 |
39 |
0,0,-1.8 |
0.65 |
retuning: untrustable result |
318 |
21:06 |
uranus |
@cross |
118 |
39 |
0,0,-1.8 |
0.65 |
|
319 |
21:08 |
uranus |
@focusp |
119 |
39 |
0,0,-1.8 |
0.7 |
do not do focus correction: bad weather and source size seems ok. apply set pointing -26 1.9 |
320 |
21:13 |
uranus |
@cross |
120 |
40 |
0,0,-1.8 |
0.7 |
can not reduce ? |
321 |
21:13 |
uranus |
@otfgeom |
123 |
43 |
0,0,-1.8 |
0.65 |
uranus is centered |
322 |
21:37 |
DIY |
@obs/diyup |
122 |
20 |
0,0,-1.8 |
0.65 |
cancelled |
323-327 |
21:40 |
DIY |
@obs/diyup |
122 |
20 |
0,0,-1.8 |
0.62 |
cancelled |
328 |
21:49 |
DIY |
@obs/diyup |
122 |
20 |
0,0,-1.8 |
0.62 |
|
329 |
22:04 |
Uranus |
track -200 -200 |
129 |
48 |
0,0,-1.8 |
0.63 |
|
330 |
22:11 |
Uranus |
track -200 -200 |
129 |
48 |
0,0,-1.8 |
0.63 |
|
331 |
22:11 |
Uranus |
@otfgeom_25 |
129 |
48 |
0,0,-1.8 |
0.63 |
crap : the HWP stopped rotating (speed 2.98 Hz 16 meas/turn) - scan cancelled |
332 |
22:23 |
Uranus |
@otfgeom_25 |
139 |
51 |
0,0,-1.8 |
0.6 |
20 meas/turn, 25 arcsec/sec |
332 |
22:23 |
Uranus |
@otfgeom_25 |
139 |
51 |
0,0,-1.8 |
0.6 |
20 meas/turn, 25 arcsec/sec |
333 |
22:47 |
Uranus |
track |
139 |
51 |
0,0,-1.8 |
0.6 |
to tune |
334 |
22:51 |
Uranus |
track |
153 |
55 |
0,0,-1.8 |
0.6 |
seeing the plate turning in the signal (omega, 2omega and 4omega peaks). Trying to remove polarizer |
335 |
22:59 |
Uranus |
track |
154 |
55 |
0,0,-1.8 |
0.6 |
less 2omega and 4omega so they were due to polarized noise, but still a lot of noise at frequency omega (3Hz or so): will check if waveplate is well aligned. Time to use the Vernier caliper !! |
336-340 |
23:01 |
Uranus |
track |
156 |
56 |
0,0,-1.8 |
0.6 |
tracking uranus while andrea and alain try to fix the waveplate |