NIKA October 10th, 2015 / S3

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

== 2015-10-10 ==

----
==== 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.''
----

Data Repository: /home/nika2/NIKA/Data/run13_X/scan24_X  


||'''Scan'''||'''UT'''||'''Source'''||'''Command'''              ||'''Az'''||'''El'''||'''Pointing X, Y, Focus'''||'''Tau225'''||    '''Comment'''         ||
||144-148   || 12h10m  ||  Mars    || FocusLissold      ||  240   ||  46    ||   0,0,-2              ||   0.7, increasing... :-(    || checking focus, centered at -2, steps 0.6  ||
||149-153   || 12h20m  ||  Mars    || FocusLissold      ||  240   ||  46    ||   0,0,-0.8             ||   0.7, increasing... :-(    || checking focus, centered at -0.8, steps 0.6  ||
|| 154   || 12h30m  ||  Mars    || OTFgeom      ||  243   ||  43    ||   0,0,-0.8             ||   0.7   || we make a 'focus by hand' procedure, making at each step a small OTFgeom (NO lissajous!) so that then we can make maps pixel by pixel, less affected by the geometry (that we still do not know!)! first step: focus -0.8  ||
|| 155   || 12h38m  ||  Mars    || OTFgeom      ||  245   ||  42    ||   0,0,-1.3: focus -1.3            ||   0.7   || 'focus by hand' procedure, second step: focus -1.3  ||
|| 156   || 12h44m  ||  Mars    || OTFgeom      ||  246   ||  41    ||   0,0,-0.3: focus -0.3            ||   0.7   || 'focus by hand' procedure, third step: focus -0.3. It looks like we improve in this direction -> we try to go to positive focus... ||
|| 157   || 12h52m  ||  Mars    || OTFgeom      ||  248   ||  39.5    ||   0,0,+0.2: focus +0.2            ||   0.7   || 'focus by hand' procedure, forth step: focus +0.2  ||
|| 158   || 13h04m  ||  Mars    || OTFgeom      ||  248   ||  38    ||   0,0,+0.7: focus +0.7            ||   0.6  (? :-) ?)   || 'focus by hand' procedure, 5th step: focus +0.7  ||
|| 159   || 13h13m  ||  Mars    || Pointcross 'mode b' (=bright source)      ||  252   ||  35    ||   0,0,+0.2            ||   0.6   || OPTIMAL FOCUS seems to be at +0.2 so we set this value for the time being.  ||
|| 160   || 13h17m  ||  Mars    || Pointcross 'b'     ||  252   ||  35    ||   -17,+30,+0.2            ||   0.6   || Following the previous cross we set the pointing to -17 +30. Now checking that it's ok.  ||
|| 161   || 13h21m  ||  Mars    || Pointcross 'b'     ||  254   ||  34    ||   +20,-20,+0.2            ||   0.6   || Checks on pointing...  ||
|| 162   || 13h25m  ||  Mars    || Pointcross 'b'     ||  255   ||  33    ||   -4.6,-0.8,+0.2            ||   0.7   || Changed reference pixel, new checks on pointing  ||
|| 163   || 13h27m  ||  Mars    || Pointcross 'b'     ||  255   ||  32.5    ||   -4.6,-0.8,+0.2            ||   0.7   || Remaking same cross, previous one gave bad results (clouds?)  ||
|| 164   || 13h29m  ||  Mars    || Focusliss     ||  256   ||  31    ||   -4.6,-0.8,+0.2 (focus -1.2 to +2.2)            ||   0.8   || Trying a focusliss now that we should be around the good value and better pointed  ||
|| 166   || 13h40m  ||  DIY    || SKYDIP     ||  257   ||  --    ||   -4.6,-0.8,+0.2            ||   0.8   ||   ||
|| 169   || 13h40m  ||  DIY    || SKYDIP     ||  107   ||  --    ||   -4.6,-0.8,+0.2            ||   0.8   ||   ||
|| 171   || 14h06m  ||  G34.3    || Pointcross 'b'     ||  110   ||  27    ||   -4.6,-0.8,+0.2            ||   0.8   || new compression of data file with 'moyennage' taken with mac35  ||
|| 173   || 14h11m  ||  DIY   || SKYDIP     ||  110   ||  --    ||   -4.6,-0.8,+0.2            ||   > 0.8   || strange results  ||
|| 175   || 14h41m  ||  DIY   || SKYDIP (other script)    ||  110   ||  --    ||   -4.6,-0.8,+0.2            ||   > 0.8   || using skydip.pako script (the one to be used)  ||
|| 177   || 14h50m  ||  G34.3    || OTFgeom      ||  119   ||  35    ||   0,0,+0.2: focus +0.2            ||   0.7   || 240x240arcsec  ||