Describe NK2013_Jun12 here. NIKA November 2012 S2
Back to list of day to day logbook of observations
2013-06-12
- 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 measured with the new taumeter at 225 GHz
For start Nasmyth offsets : 28, 28
Set pointing : 0, 0
Set Focus : -2.40 mm
- Quick description of the session:
- Mars Pointing, focus, otfgeom.
- 4 sources at different elevation to check the nasmyth corrections. If ok, correct pointing model
- Mars, pointing focus, otfgeom
- Pointing session for 3h
- Mars OTFgeom at 3 foci, 5 lissajous focus, 6 lateral positions
- Secondary calibrators: pointing, otf_3x3, faintsourceLissajous
- skydip
- faint sources to finish for noise measurements
Scan |
UT |
Source |
Command |
Az |
El |
Pointing X, Y, Focus |
Tau225 |
Comment |
110 |
9h14 |
Mars |
Track |
111 |
61 |
0, 0, -2.4 |
0.824 |
nasxy=28,28 |
111 |
9h25 |
Mars |
cross |
114 |
61 |
0, 0, -2.4 |
|
nasxy=28,28 |
112 |
9h28 |
Mars |
cross |
115 |
62 |
-6, -2, -2.4 |
|
nasxy=28,28 |
113 |
9h36 |
Mars |
focus Totpow |
117 |
63 |
-2, -3, -2.4 |
0.856 |
quite close to the Sun nasxy=28,28 |
114 |
9h45 |
Mars |
focus Totpow |
120 |
65 |
-2, -3, -2.4 |
0.863 |
nasxy=28,28 |
115 |
9h50 |
Mars |
otf geom |
126 |
67 |
-2, -3, -2.4 |
0.863 |
nasxy=28,28 (focus could be -1.7 tbc |
116 |
10h02 |
3C111 |
cross |
80 |
78 |
-2, -3, -2.4 |
|
nasxy=28,28 (off found -4, -3 ok) |
117 |
10h12 |
3C454.3 |
cross |
269 |
27 |
-2, -3, -2.4 |
|
nasxy=28,28 resonances lost (fxd's fault) should do track first do not use |
118 |
10h30 |
3C454.3 |
cross |
269 |
27 |
-2, -3, -2.4 |
|
nasxy=28,28 difficult to point |
119 |
10h38 |
Mars |
track |
151 |
73 |
0, 0, -2.4 |
0.879 |
FROM NOW ON: nasxy=0,0 Second Pointing model (nas corrections included 28,28) |
120 |
10h51 |
Mars |
cross |
151 |
73 |
0, 0, -2.4 |
0.891 |
Found at 2mm: -3 -3 |
121 |
10h54 |
Mars |
cross |
162 |
74 |
-3, -3, -2.4 |
0.891 |
Found at 2mm: 0 -4 Some 2mm pixels (20) were missing in all previous scans |
122 |
11h04 |
Mars |
cross |
169 |
74 |
-3, -3, -2.4 |
|
|