Day to day observation logbook
link to summary table with plots |
2 hours observed / 2 hours scheduled |
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link to summary table with plots |
~5.5 h obs / 6.5 h schedul, but mostly poor weather |
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Nika 2014-01-22 sheet3 see also TAPAS & Pool database |
<8h h obs / 12 h schedul, stopped due to bad weather |
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Nika 2014-01-23 sheet4 see also TAPAS & Pool database |
4h h obs / 9 h schedul, stopped due to bad weather |
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Nika 2014-01-24 sheet5, TAPAS & Pool may miss some crosses and otf; to be checked |
~8h h obs / 9 h schedul, but 2nd half very windy |
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Nika 2014-01-25 sheet6 the TAPAS & Pool may miss some crosses and otf; to be checked |
link to summary table with plots |
4h h obs / 9 h schedul, stopped due to wind, 1st half very windy |
Nika 2014-01-26 sheet7 the TAPAS & Pool may miss some crosses and otf; to be checked |
link to summary table with plots |
9h h obs / 9 h schedul, best obs conditions of the week |
Nika 2014-01-27 sheet8 the TAPAS & Pool may miss some crosses and otf; to be checked |
link to summary table with plots |
8h h obs / 8 h schedul, good with some wind around sunset |
Quick summary of observations per day
Mon, Jan 20
First light. Check detector noise. Test main scripts to be used: track, cross, pointliss, focusp, focusliss, otfgeom, skydip_up, skydip_updown.
- Radio alignment by background minimization.
- No antenna data for the entire session.
Tue, Jan 21
- Investigation on the Nasmyth offsets: understand how the telescope Nasmyth reference coordinates are projected on the array.
- Investigation on the alignment: RADIO ALIGNMENT BY BACKGROUND MINIMIZATION DOESN'T WORK; using the laser alignment give stronger signals; the background minimization is probably due to vignetting of the pupil by the sky next to M2.
Statistics on pointing corrections, pointing at a source for 1 hour. test script otf10x10. 2 beam maps.
Wed, Jan 22
- Iterations on focus scans to check focus variability.
- 1 beam map. Additional tests on Nasmyth offsets.
Use bad weather condition to test acquisition procedures and data with polarizer components: 1st modulator on, no half-wave plate, then with HWP immobile, then rotating. Try optimization of polarizer angle. Test scripts otf5x5, otf5x5_pol, otf5x5_half.
Last test with Nasmyth offset, choose 'reference detector: 494 on the 2mm array.
- Secondary calibrator: W3OH.