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Size: 3308
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Size: 3645
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| Deletions are marked like this. | Additions are marked like this. |
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| '''12-13 November 2013''': cooling down, HWP Modulator installation at the pupil (120mm from the entrance lens of the cryostat) | '''12-13 November 2013''': cryostat and Read-Out positioning in the cabin, cooling down, HWP Modulator installation at the pupil (120mm from the entrance lens of the cryostat). |
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| '''Arrays status''': 128 pixels 2mm - <1Hz/sqrtHz noise; 201 pixels 1mm about 10Hz/sqrtHz noise | '''Arrays''': 128 pixels 2mm - <1Hz/sqrtHz noise; 201 pixels 1mm about 10Hz/sqrtHz noise |
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| Opacity is measurd with the taumeter at 225 GHz | Opacity is measured with the taumeter at 225 GHz |
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| {{attachment:1mm.png||width=1000,height=750}} | {{attachment:1mm.png||width=900,height=550}} |
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| ''Figures: 1mm array.'' | ''Figures: 1mm array from scan 231.'' |
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| {{attachment:2mm.png||width=1000,height=750}} | {{attachment:2mm.png||width=900,height=550}} |
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| ''Figures: 2mm array.'' | ''Figures: 2mm array from scan 231.'' {{attachment:pol1.png||width=600}} {{attachment:pol2.png||width=600}} ''Figures: Entire (top) and zoomed (bottom) Timeline of the scan 232 on Uranus in configuration NIKA + HWP-Pol'' '''Further results on polarisation measurements will come soon.......''' |
November 11th 2013, Alain Benoit, Martino Calvo and Andrea Catalano come to the 30m to install, cool down and testing the NIKA prototype.
12-13 November 2013: cryostat and Read-Out positioning in the cabin, cooling down, HWP Modulator installation at the pupil (120mm from the entrance lens of the cryostat).
14 November 2013: OTF geometries on Mars and Uranus. Check of the focal plane geometry. First light of NIKA prototype with polarisation facilities.
15 November 2013: Cryostat back to 300K: 3He-4He mix recovery, heating trap. Polarisation facilities dismantling. Back to Granada.
STATUS
Cryostat Temperature: 150mK (set by temperature control).
Arrays: 128 pixels 2mm - <1Hz/sqrtHz noise; 201 pixels 1mm about 10Hz/sqrtHz noise
Modulation frequency: 8kHz 1mm, 4kHz 2mm
OBSERVATIONS Log
Opacity is measured with the taumeter at 225 GHz
p2cor : 0
p7cor : 0
initial Focus : -2.40 mm
Scan |
UT |
Source |
Command |
Az |
El |
Pointing X, Y, Focus |
Tau225 |
Comment |
15 |
04h39 |
Mars |
Track |
|
|
0 , 0 , -2.4 |
0.15 |
|
16 |
04h45 |
Mars |
OTF_Geometry |
|
|
0 , 0 , -2.4 |
0.15 |
First map for choosing the reference pixels |
17-21 |
04h58-05h04 |
Mars |
Focus_Liss |
|
|
0, 0, -2.4 |
0.15 |
|
22 |
05h05 |
Mars |
Focus |
|
|
0, 0, -2.4 |
0.15 |
|
23 |
05h47 |
Mars |
OTF_Geometry |
|
|
0, 0, -2.4 |
0.15 |
Tuning working during the map |
211-218 |
21h34-21h57 |
Uranus |
Track 300 300 |
55 |
190 |
0, 0, -2.4 |
0.00001 |
|
220-224 |
22h01-22h08 |
Uranus |
Focus_Liss |
|
|
0, 0, -2.4 |
0.00001 |
optimal focus probably over the range |
225 |
22h10 |
Uranus |
Cross |
|
|
0, 0, -2.4 |
0.00001 |
|
226-230 |
22h12-22h18 |
Uranus |
Focus_Liss |
|
|
0, 0, -1 |
0.00001 |
set pointing Az=-12.8 El=3.8 set focus = -1.5 |
231 |
22h24 |
Uranus |
OTF_Geometry |
|
|
-12.8, 3.8, -1.5 |
0.00001 |
|
232 |
22h49 |
Uranus |
OTF_Geometry |
|
|
-12.8, 3.8, -1.5 |
0.00001 |
HWP+Pol |
241-245 |
23h34-23h47 |
other observing |
various |
|
|
|
|
HWP+Pol+Cryostat in the cabin environment |
FIRST RESULTS
Figures: Focal Plane Geometry derived using scan 16: we chose the following reference pixels: 491 for 2mm array, 5 for 1mm array.
Figures: 1mm array from scan 231.
Figures: 2mm array from scan 231.
Figures: Entire (top) and zoomed (bottom) Timeline of the scan 232 on Uranus in configuration NIKA + HWP-Pol
Further results on polarisation measurements will come soon.......