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==== Friday, Oct 15 ==== The wrong tilt of M8 was corrected during the night thanks to the addition of small aluminum support plates (see picture below). We simulated in Zemax the effect of several millimeter and tenth of degree error in the position of M8 and showed insignificant increase of aberrations. The helium consumption is at least twice higher than expected, maybe due to a small thermal shortcut between the 77K and 4K stages. For the moment we can live with that, let see how it evolve with time. Detectors are cold in the morning and show resonances ! On the picture below the resonances of the 2mm array appear on the red-background window and the 1mm array in the pink-background window. At 14h we go in the cabin to re-install the NIKA mirrors, do the laser alignment, change the helium bottles. Then we perform two scans on Mars. Beside a very fluctuating background due to a cloudy sky, we see it ! Mars appear as little bumps on the time-traces on the picture below of an orange background window. We give back the telescope to the next heterodyne project, and start working on these first light data. ||{{attachment:NIKA_optics_aligned.jpg}} {{attachment:curved_M8_tilt_corrected.jpg}} {{attachment:NIKA_entrance_window.jpg}} {{attachment:resonances_on_both_arrays.jpg}} {{attachment:first_light_on_Mars.jpg}}|| |
NIKA run #2 (13. - 25. Oct 2010, week 42)
Test run plan: 14.10. - 25.10.2010
# |
Dates |
Main Task |
Details |
Lead (IRAM / Neel) |
Support |
|
13.10. |
|
Arrival of first visitors in Granada |
|
|
|
14.10. Thursday |
Arrival of truck, mount and cool down |
Limited access to Rx-Cabin: 4 hours in afternoon |
Samuel / Alain |
|
|
15.10. Friday |
Cool down / system checks |
Limited access to Rx-Cabin: 2 hours in afternoon |
Samuel / Alain |
|
|
16.10. Saturday |
Optical alignment (incl. removal of M3) |
Limited access to Rx-Cabin: 2 hours in afternoon |
Samuel / Alain |
|
|
17.10. Sunday |
Bright sources optical model |
Limited access to Rx-Cabin: 2 hours in afternoon |
Samuel / Alain |
|
|
18.10. Monday |
Observations (T16-10) |
6h30 - 20h30 |
Samuel / Alain |
|
|
19.10. Tuesday |
Observations (T16-10) |
17h30 - 2h30 |
Samuel / Alain |
|
|
20.10. We. - 21.10 Th. |
Observations (T16-10) |
14h30 - 2h30 |
Samuel / Alain |
|
|
22.10. Friday |
Observations (T16-10) |
9h00 - 21h00 |
Samuel / Alain |
|
|
23.10. Saturday |
Observations (T16-10) |
18h00 - 6h00 |
Samuel / Alain |
|
|
24.10. Sunday |
Observations (T16-10) |
14h30 - 2h30 |
Samuel / Alain |
|
|
25.10. Monday |
Warm up, dismount |
Free Rx cabin for 11h00 (MAMBO-2 operations) |
|
|
color table of the Run schedule
Staffing of the test run (DRAFT by CK, 2.9.2010)
The total number of rooms at the Pico is 14.
- IRAM/Granada (9 rooms minimum during the week, 7 rooms at weekends):
- Operators: J.L.Santarén (day time), F.Damour (night time) (2 rooms)
- J.Penalver (1 room, Mon-Wed), S.Sanchez (Wed-Fri)
- Astronomers of Duty / Friend of the instrument: D.Riquelme or G.Quintana-Lacaci (1 room)
- Receiver group: Dave John or Santiago Navarro ? (1 room)
- Computer group: Walter Brunswig or Albrecht Sievers ? (1 room)
- Additional 2 rooms are the minimum needed for cooks and cleaning personal.
- IRAM/Grenoble: Samuel Leclercq or Markus Roesch or Robert Zylka or Karl Schuster ? (2 at a time, 2 rooms)
- Visitors from Neel, LAOG, AIG Cardiff, SRON Utrecht, Groningen: *upto 4 rooms during the week* may be used by the visitors. Double occupancy is an option, but the cooks would need to be informed beforehand of this extra load. If more visitors are essential, they'd need to stay over night in the nearby ski resort Pradollano, e.g. at the hotel Kenia.
color table of the NIKA staff schedule
List of astronomical target (Final by FXD, 14.10.2010)
Above information plus more details (logistics, preparation of the run, sources list) on the following pdf document
Test plan 2010 10 (updated 14 Oct 2010)
Daily reports
Thursday, Oct 14
- Everybody has arrived at the telescope, computers and network installation in the control room done, electrical connection of the instrument checked, NIKA is ready to be lifted to the receiver cabin.
15h-18h: Lift NIKA in the receiver cabin & install it on the optical bench. Alignment with the laser: wrong tilt for M8, will be fixed tonight. Electric checks OK. Pump, start cool down.
Friday, Oct 15
- The wrong tilt of M8 was corrected during the night thanks to the addition of small aluminum support plates (see picture below). We simulated in Zemax the effect of several millimeter and tenth of degree error in the position of M8 and showed insignificant increase of aberrations. The helium consumption is at least twice higher than expected, maybe due to a small thermal shortcut between the 77K and 4K stages. For the moment we can live with that, let see how it evolve with time. Detectors are cold in the morning and show resonances ! On the picture below the resonances of the 2mm array appear on the red-background window and the 1mm array in the pink-background window. At 14h we go in the cabin to re-install the NIKA mirrors, do the laser alignment, change the helium bottles. Then we perform two scans on Mars. Beside a very fluctuating background due to a cloudy sky, we see it ! Mars appear as little bumps on the time-traces on the picture below of an orange background window. We give back the telescope to the next heterodyne project, and start working on these first light data.
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