NIKA October 12th, 2015 / S4

[[D2DLogNika2Run1 |Back to list of day to day logbook of observations]]

== 2015-10-12 ==

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==== Following not updated ====
'' .Cryostat Temperature: 170mK cooling down slowly 
 Arrays status tonight:  full 2mm array - 1-3 Hz noise; 2 feed lines on 1mm array 3-5Hz noise 
Modulation frequency: 10kHz 1mm, 5kHz 2mm

Opacity is measured with the new taumeter at 225 GHz 

Nasmyth offsets : 0, 0

Set Focus : we start at -2mm (not at all optimised, first task is try to improve on this!)

 .Quick description of the session: Test the Pako sequences and data flows.''
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Data Repository: /home/nika2/NIKA/Data/run13_X/scan24_X  


||'''Scan'''||'''UT'''||'''Source'''||'''Command'''              ||'''Az'''||'''El'''||'''Pointing X, Y, Focus'''||'''Tau225'''||    '''Comment'''         ||
|| 12  || 12h10m  ||  Mars    || Track      ||  240   ||  46    ||   0,0,-1.3             ||   0.3   || going on source, checking that tuning is ok...  ||
|| 13-17  || 12h14m  ||  Mars    || Focuslissold      ||  240   ||  45    ||   0,0, (-1.3 -1.9 -2.5 -0.7 -0.1)             ||   0.25   || start with a focuslissold : pb, no good data (disk not mounted) ||
|| 18-22  || 12h14m  ||  Mars    || Focuslissold      ||  240   ||  45    ||   0,0, (-1.3 -1.9 -2.5 -0.7 -0.1)             ||   0.25   || no subscan gt 0 and very small data recorded ? ||
|| 23  || 12h14m  ||  Mars    || pointingcross      ||  240   ||  45    ||   0,0, -1.3           ||   0.25   ||  ditto ||
|| 24  || 12h14m  ||  Mars    || pointingcross      ||  240   ||  45    ||   0,0, -1.3           ||   0.25   ||  ditto ||
|| 30  || 13h08m  ||  Mars    || pointingcross      ||  240   ||  45    ||   0,0, -1.3           ||   0.25   ||  ditto ||
|| 31  || 13h08m  ||  Mars    || pointingcross      ||  240   ||  45    ||   0,0, -1.3           ||   0.25   || Ok, data are finally coming! Alain repaired a problem in the C read_data procedure as well as a bug in the tuning. Great!  ||
|| 32-36  || 13h30m  ||  Mars    || focuslissold      ||  258   ||  30    ||   0,0, -1.3           ||   0.3   ||  Focus seems better towards high values.. ||
|| 37  || 13h40m  ||  Mars    || focuslissold      ||  258   ||  30    ||   0,0, 0           ||   0.3   ||  Canceled! Doesn't like to have focus set to 0... ||
|| 38-42  || 13h43m  ||  Mars    || focuslissold      ||  258   ||  28.5    ||   0,0, 0.1          ||   0.3   ||  New focus procedure centered on 0.1 ||
|| 43  || 13h53m  ||  Mars    || focusliss      ||  258   ||  26    ||   0,0, 0.1          ||   0.3   ||  Seems the focus is ok around 0.1! We see a nice parabola. Going on to try a geometry  ||
|| 44  || 13h59m  ||  Mars    || otfgeom      ||  258   ||  25    ||   0,0, 0.1          ||   0.3   ||  First we try a small geometry of 240"x240" to verify everything is ok.  ||
|| 45  || 14h13m  ||  Mars    || beammap (part1)     ||  258   ||  22    ||   0,0, 0.1          ||   0.4   ||  We try a full beammap. Sadly tau is increasing and the elevetion of Mars is now 22. We'll see!  ||
|| 46  || 14h28m  ||  Mars    || beammap (part2)     ||  258   ||  ~19    ||   0,0, 0.1          ||   0.5   ||   ||
|| 47  || 14h43m  ||  Mars    || beammap (part3)     ||  268   ||  16 (!!)    ||   0,0, 0.1          ||   0.65   ||  Weather getting worse again..  ||