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⇤ ← Revision 1 as of 2015-10-10 12:17:04 →
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Comment:
Deletions are marked like this. Additions are marked like this.
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Data Repository: /home/nika2/NIKA/Data/run13_X/ (to check..) Data Repository: /home/nika2/NIKA/Data/run13_X/scan24_X
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||144-148 || 12h10m || Mars || FocusLissold || 240 || 46 || 0,0,-2 || 0.7, increqsing... :-( || checking focus, centered at -2, steps 0.6 || ||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 ||

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,+0.2: 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

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