Differences between revisions 23 and 25 (spanning 2 versions)
Revision 23 as of 2014-10-10 22:45:51
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Revision 25 as of 2014-10-10 23:40:26
Size: 11022
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|| 172 || 22h08 || 2200+410 (BLLac)|| otfgeom_20 || 296 || 75 || 0,0,-1.8 || 0.45 ||  || || 172 || 22h08 || 2200+410 (BLLac)|| otfgeom_20 || 296 || 75 || 0,0,-1.8 || 0.45 || otfgeometry with rotation of HWP ||
Line 84: Line 84:
|| 179-181 || 22h55 || 2200+410 (BLLac)|| @otf3x3 || 291 || 66 || 0,0,-1.8 || 0.55 || HWP rotating OTF - issues with Fifo ?||
|| 182 || 23h07 || 2200+410 (BLLac)|| otfgeom_20 || 296 || 64 || 0,0,-1.8 || 0.45 || otfgeometry without rotation of HWP to try implement nasmyth offsets. some gaps in data, might be better on X35 ||
|| 183 || 23h30 || NGC7538 || track || 338 || 62 || 0,0,-1.8 || 0.6 || HWP not rotating ||
|| 184 || 22h30 || DIY || skydip_up || 340 || 20 || 0,0,-1.8 || 0.6 || skydip without HWP rotating ||
|| 185 || 22h39 || NGC7538 || track || 337 || 61 || 0,0,-1.8 || 0.6 || go to NGC7538 ||
|| 186-188 || 22h40 || NGC7538 || @otf3x3 || 336 || 61 || 0,0,-1.8 || 0.6 || otf map without polar to compare stokesI ||

NIKA October 10th, 2014 / S4

Back to list of day to day logbook of observations

2014-10-09


Opacity is measured with the new taumeter at 225 GHz

Nasmyth offsets : 21.2, 36.75

Set pointing : 0, 0

Set Focus : -1.8 mm

  • Quick description of the session: measure polarization of quasars at various elevations and planets to test our system and calibrate


Polarizer on, HWP on but not turning at session start

Data Repository: Raw_X35

Acquisition = 59,605 Hz

Observing account: t21

Values in brackets [] are not updated.

Scan

UT

Source

Command

Az

El

Pointing X, Y, Focus

Tau225

Comment

110-111

18h14

2200+410 (BLLac)

Track off -200 -200

67

58

0,0,-1.8

0.7

Tuning

112

18h18

2200+410 (BLLac)

@cross

67

58

0,0,-1.8

0.7

113

18h18

2200+410 (BLLac)

@cross

67

58

0,0,-1.8

0.7

114

18h

2200+410 (BLLac)

@cross or track ?

67

58

0,0,-1.8

0.7

115

18h

2200+410 (BLLac)

track

67

58

0,0,-1.8

0.7

116

18h28

2200+410 (BLLac)

track

67

58

0,0,-1.8

0.7

117

18h30

2200+410 (BLLac)

@cross

67

58

0,0,-1.8

0.7

Holes in the data

118

18h34

2200+410 (BLLac)

@cross

67

61

0,0,-1.8

0.7

try to center on ref detector using updated pipeline

119

18h37

2200+410 (BLLac)

@cross

67

61

0,0,-1.8

0.7

offset 42 31 /sys nasmyth

120

18h40

2200+410 (BLLac)

@cross

67

61

0,0,-1.8

0.7

offset 21 5.8 /sys nasmyth

121

18h42

2200+410 (BLLac)

@cross

67

61

0,0,-1.8

0.7

offset 0 5.8 /sys nasmyth

122

18h46

2200+410 (BLLac)

@cross

67

61

0,0,-1.8

0.8

offset -19 5.8 /sys nasmyth - holes in the data

123

18h48

2200+410 (BLLac)

@cross

67

61

0,0,-1.8

0.8

offset -19 5.8 /sys nasmyth - holes in the data

124

18h50

2200+410 (BLLac)

@cross

67

61

0,0,-1.8

0.8

offset -19 5.8 /sys nasmyth OK well centered

125

18h52

2200+410 (BLLac)

@cross

67

61

0,0,-1.8

0.8

set pointing -41.2 5.0

126

18h54

2200+410 (BLLac)

@cross

67

61

0,0,-1.8

0.8

set pointing 0 0 - holes in the data

127

18h56

2200+410 (BLLac)

@cross

67

65

0,0,-1.8

0.8

set pointing 0 0 (in Alain data only 1 hole at 18h42m49s)

128

18h58

2200+410 (BLLac)

@cross

67

65

0,0,-1.8

0.8

set pointing 41.2 0

129

19h00

2200+410 (BLLac)

@cross

67

65

0,0,-1.8

0.8

set pointing -41.2 0

130

19h10

2200+410 (BLLac)

@cross

67

65

0,0,-1.8

0.8

set pointing 0 0 source on ref det but offset w.r.t az-el offset 0 0

131

19h13

2200+410 (BLLac)

@focusp

67

65

0,0,-1.8

0.8

132

19h16

DIY-Tip

@skydip_up

67

45

0,0,-1.8

0.8

133

19h29

2200+410 (BLLac)

track

67

65

0,0,-1.8

0.7

134

19h30

2200+410 (BLLac)

@focusp

67

65

0,0,-1.8

0.7

- holes in data (MJD antenna)

135

19h30

2200+410 (BLLac)

@focusp

67

65

0,0,-1.8

0.7

(pipeline say set focus -2.78)

136

19h30

2200+410 (BLLac)

@focusp

67

65

0,0,-1.8

0.7

set focus -2.78 (pipeline say set focus -2.0)

137-139

19h44

2200+410 (BLLac)

@otf3x3

63

74

0,0,-1.8

0.7

HWP rotating: 2.48Hz 6pts independants - LOOK AT DATA ON X9

140-141

19h55

2200+410 (BLLac)

@otf3x3

61

76

0,0,-1.8

0.7

cancelled at scan 142 : max azimuth reached

143

20h09

2200+410 (BLLac)

track

416

79

0,0,-1.8

0.7

set topology high and track source while looking for imbfits.

144-146

20h20

2200+410 (BLLac)

@otf3x3

410

80

0,0,-1.8

0.7

HWP not rotating to check data

147

20h33

2200+410 (BLLac)

@otf3x3

400

82

0,0,-1.8

0.7

HWP rotating 6pts independants. only one coverage because reaching elevation limit

148

20h39

NGC7538

track

381

61

0,0,-1.8

0.6

HWP rotating 6pts independants.

149-151

20h41

NGC7538

@otf5x5

382

61

0,0,-1.8

0.6

HWP rotating 6pts independants. HWP stopped during scan 151: ignore and use only 149

152

21h01

NGC7538

@otf5x5

377

63

0,0,-1.8

0.6

HWP rotating 8pts independants. HWP stopped : cancelled

153-155

21h08

NGC7538

@otf3x3

375

63

0,0,-1.8

0.6

HWP rotating 8pts independants.

156

21h20

3C84

track

419

34

0,0,-1.8

0.6

go to 3C84 for a cross

157

21h22

3C84

@cross

419

34

0,0,-1.8

0.6

158

21h23

3C84

@otf3x3

420

34

0,0,-1.8

0.6

HWP rotating 8pts independants. cancelled because motor speed too high

159

21h27

3C84

track

420

34

0,0,-1.8

0.6

HWP rotating 8pts independants. see if motor currents come back

160

21h28

3C84

track

420

34

0,0,-1.8

0.6

HWP rotating 8pts independants. motor speed : cancelled. change source to avoid wind direction

161

21h32

NGC7538

track

370

64

0,0,-1.8

0.6

HWP rotating 8pts independants. Holes in data really annoying, they are due to missing antenna MJD data lacking: Antenna not recorded anymore except on MAC10

162

21h32

NGC7538

@otf3x3

375

63

0,0,-1.8

0.6

cancelled: andrea was creating a file

163-165

21h33

NGC7538

@otf3x3

369

64

0,0,-1.8

0.5

HWP rotating 8pts independants.

166-168

21h44

NGC7538

@otf3x3

366

65

0,0,-1.8

0.5

HWP rotating 8pts independants.

169

21h54

2200+410 (BLLac)

track

299

77

0,0,-1.8

0.5

go on BLLac to do pointing focus

170

21h57

2200+410 (BLLac)

cross

299

77

0,0,-1.8

0.5

171

21h59

2200+410 (BLLac)

focus

299

77

0,0,-1.8

0.5

set focus -2.4

172

22h08

2200+410 (BLLac)

otfgeom_20

296

75

0,0,-1.8

0.45

otfgeometry with rotation of HWP

173

22h32

DIY

skydip_up

310

20

0,0,-1.8

0.5

cancelled because bad azimuth in macro

174

22h36

DIY

skydip_up

310

20

0,0,-1.8

0.5

with HWP rotating

175

22h43

2200+410 (BLLac)

track

292

68

0,0,-1.8

0.5

go on BLLac to do OTF

176-178

22h45

2200+410 (BLLac)

@otf3x3

292

68

0,0,-1.8

0.55

HWP rotating OTF

179-181

22h55

2200+410 (BLLac)

@otf3x3

291

66

0,0,-1.8

0.55

HWP rotating OTF - issues with Fifo ?

182

23h07

2200+410 (BLLac)

otfgeom_20

296

64

0,0,-1.8

0.45

otfgeometry without rotation of HWP to try implement nasmyth offsets. some gaps in data, might be better on X35

183

23h30

NGC7538

track

338

62

0,0,-1.8

0.6

HWP not rotating

184

22h30

DIY

skydip_up

340

20

0,0,-1.8

0.6

skydip without HWP rotating

185

22h39

NGC7538

track

337

61

0,0,-1.8

0.6

go to NGC7538

186-188

22h40

NGC7538

@otf3x3

336

61

0,0,-1.8

0.6

otf map without polar to compare stokesI

NK2014_Oct10 (last edited 2014-10-12 21:39:46 by NikaBolometer)