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Revision 10 as of 2015-10-10 12:59:34
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|| 155 || 12h38m || Mars || OTFgeom || 245 || 42 || 0,0,-1.3 || 0.7 || 'focus by hand' procedure, second step: focus -1.3 ||
|| 156 || 12h44m || Mars || OTFgeom || 246 || 41 || 0,0,-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,-0.3 || 0.7 || 'focus by hand' procedure, forth step: focus +0.2 ||
|| 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,-0.3: focus +0.2 || 0.7 || 'focus by hand' procedure, forth step: focus +0.2 ||

NIKA October 10th, 2015 / S1

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,-0.3: focus +0.2

0.7

'focus by hand' procedure, forth step: focus +0.2

NK2015_Oct10 (last edited 2015-10-16 10:52:37 by NikaBolometer)