NIKA October 15th, 2015 / S7

Back to list of day to day logbook of observations

2015-10-15


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

For this session Array 3 is not connected.

Opacity is measured with the new taumeter at 225 GHz

Nasmyth offsets : 0, 0

Set Focus : we start at 0.0 mm


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

Scan

UT

Source

Command

Az

El

Pointing X, Y, Focus

Tau225

Comment

118

07h14

Mars

Track point

123

47

0,0,0.

0.25

Pointing towards Mars. We are using the geometry reduced from yesterday's observation (s20151014s116/17/18)

119

07h20

Mars

Pointcross

123

47

0,0,0.

0.25

Scan not so good. The reference pixel is not centered.

120

07h23

Mars

Pointcross

125

48

0,0,0.

0.21

Ref pix 2022 (1mm) and 830 (2mm) not centered.

121

07h34

Mars

Track point

125

48

0,0,0.

0.21

Restarting PAKO with @ini. Source Mars. Track.

122

07h36

Mars

Pointcross

128

50

0,0,0.

0.26

Pointing problem. Scan pattern seems choppy. Reference pixels not centered. SL checking IMB fits file, nothing particular found.

123

07h44

Mars

Pointcross

131

51

0,0,0.

0.14

Pointing looks better. Martino restarted antenna and elvin in the NIKA control software.

124

07h48

Mars

Pointcross

131

51

-16.6,3.4,0.

0.14

Pointing looks better. Wind.

125

07h52

Mars

focuslissold

134

52

-16.6,3.4,0.

0.14

CANCELLED: FOC=0.01 resulted in FOC=9.99

126-130

07h53

Mars

focuslissold

134

52

-16.6,3.4,0.

0.17

1mm focus looks good. Try improving 2mm.

131

08h01

Mars

Pointcross

137

54

-16.6,3.4,-0.3

0.12

132

08h07

Mars

Pointcross

134

52

-10.,1.6.4,-0.3

0.11

SL: could scan maps be presented in log scale?

133

08h10

Mars

Focustrack

140

54

-9.3,3.5,-0.3

0.11

Axis=Z

134-138

08h14

Mars

focuslissold

141

55

-9.3,3.5,-0.3

0.04

139

08h25

Mars

Beammap (1/3)

146

56

-9.3,3.5,-0.3

0.13

140

08h40

Mars

Beammap (2/3)

153

58

-9.3,3.5,-0.3

0.1

141

08h57

Mars

Beammap (3/3)

160

59

-9.3,3.5,-0.3

0.23

142

09h14

Mars

Pointcross

167

60

-9.3,3.5,-0.3

0.18

143

09h16

Mars

Focustrack

169

60

-9.0,5.6,-0.3

0.1

Axis=Z

144-148

09h20

Mars

focuslissold

171

60

-9.0,5.6,-0.3

0.2

(FWHM 1mm) SET FOCUS -0.1

149-153

09h27

Mars

focuslissold

177

60

-9.0,5.6,-0.1

0.1

Output: (FWHM 1mm) SET FOCUS 0.02. No change implemented.

154

09h44

Mars

Beammap (1/3)

184

60

-9.3,3.5,-0.1

0.18

Beam map (3 scans)

155

10h01

Mars

Beammap (2/3)

191

60

-9.3,3.5,-0.1

0.17

156

10h17

Mars

Beammap (3/3)

199

59

-9.3,3.5,-0.1

0.16

157

10h32

Mars

Pointcross

206

58

-9.3,3.5,-0.1

0.16

158

10h33

Mars

Ponticross

207

58

-10.9,4.7,-0.1

0.09

159

10h39

Mars

Focustrack

209

57

-8.4,2.5,-0.1

0.09

Axis=Z. Trying various focus methods in the following scans (track, lissajous, cross)

160

10h43

Mars

Pointcross

210

57

-8.4,2.5,-0.1

0.2

161

10h44

Mars

Focustrack

211

57

-8.4,2.5,-0.1

0.2

Next: trying focusliss to confirm the focus values

162-166

10h48

Mars

focuslissold

213

56

-8.4,2.5,-0.1

0.19

(FWHM 1mm) SET FOCUS 0.035

167

10h55

Mars

Pointcross

215

56

-8.4,2.5,-0.1

0.19

Trying various values of the focus in the following scans

168

10h58

Mars

Pointcross

217

55

-8.4,2.5,0.06

0.19

169

11h01

Mars

Pointcross

218

55

-8.4,2.5,0.04

0.25

SET FOCUS 0.035 results in 0.04

170

11h02

Mars

Pointcross

218

55

-8.4,2.5,-0.2

0.25

171

11h04

Mars

Pointcross

218

55

-8.4,2.5,-0.1

0.19

172

11h06

Mars

Pointcross

220

54

-8.4,2.5,0.0

0.19

173

11h07

Mars

Pointcross

220

54

-8.4,2.5,0.1

0.19

174

11h09

Mars

Pointcross

221

54

-8.4,2.5,0.2

0.23

Good agreement between values found with focustrack and multiple pointcross (0.06); foccuslissold (0.035)

175

11h13

Mars

Pointcross

221

54

-8.4,2.5,0.06

0.23

Focus X dir = -0.2 / Focus Y dir = 0.0 (previous beam showed asymmetric secondary lobe: indication of a coma => from SL simu, XY focus is not optimal)

176

11h15

Mars

Pointcross

221

54

-8.4,2.5,0.06

0.15

Focus X dir = -0.1 / Focus Y dir = 0.0

177

11h17

Mars

Pointcross

224

53

-8.4,2.5,0.06

0.15

Focus X dir = 0.0 / Focus Y dir = 0.0

178

11h19

Mars

Pointcross

224

52

-8.4,2.5,0.06

0.06

Focus X dir = 0.1 / Focus Y dir = 0.0

179

11h20

Mars

Pointcross

225

52

-8.4,2.5,0.06

0.06

Focus X dir = 0.2 / Focus Y dir = 0.0

180

11h22

Mars

Pointcross

225

52

-8.4,2.5,0.06

0.1

Focus X dir = 0.0 / Focus Y dir = -0.2

181

11h24

Mars

Pointcross

226

52

-8.4,2.5,0.06

0.1

Focus X dir = 0.0 / Focus Y dir = -0.1

182

11h25

Mars

Pointcross

226

51

-8.4,2.5,0.06

0.1

Focus X dir = 0.0 / Focus Y dir = 0.0

183

11h27

Mars

Pointcross

227

51

-8.4,2.5,0.06

0.1

Focus X dir = 0.0 / Focus Y dir = 0.1

184

11h28

Mars

Pointcross

227

51

-8.4,2.5,0.06

0.1

Focus X dir = 0.0 / Focus Y dir = 0.2 Oops: miscommunication between us, the steps should have been 1mm not 0.1mm! Will start over after lunch

185

11h38

Mars

Beammap (1/3)

227

51

-8.4,2.5,0.06

0.1

Beam map (3 scans)

186

11h54

Mars

Beammap (2/3)

237

46

-8.4,2.5,0.06

0.1

187

12h08

Mars

Beammap (3/3)

239

44

-8.4,2.5,0.06

0.1

188

12h24

Mars

Pointcross

243

41

-8.4,2.5,0.06

0.1

Focus X dir = -2.0 / Focus Y dir = 0.0

189

12h26

Mars

Pointcross

243

41

-8.4,2.5,0.06

0.1

Focus X dir = 0.0 / Focus Y dir = 0.0 (Checking pointing)

190

12h29

Mars

Pointcross

244

41

-9.9,-7.5,0.06

0.1

Focus X dir = 0.0 / Focus Y dir = 0.0 (Checking pointing)

191

12h32

Mars

Pointcross

243

41

-6.2,-7.4,0.06

0.1

Focus X dir = -2.0 / Focus Y dir = 0.0

192

12h34

Mars

Pointcross

245

40

-6.2,-7.4,0.06

0.1

Focus X dir = -1.0 / Focus Y dir = 0.0

193

12h35

Mars

Pointcross

245

40

-6.2,-7.4,0.06

0.1

Focus X dir = 0.0 / Focus Y dir = 0.0

194

12h37

Mars

Pointcross

245

39

-6.2,-7.4,0.06

0.1

Focus X dir = 1.0 / Focus Y dir = 0.0

195

12h39

Mars

Pointcross

246

39

-6.2,-7.4,0.06

0.1

Focus X dir = 2.0 / Focus Y dir = 0.0

196

12h40

Mars

Pointcross

246

39

-6.2,-7.4,0.06

0.1

Focus X dir = 0.0 / Focus Y dir = -2.0

197

12h41

Mars

Pointcross

246

38

-6.2,-7.4,0.06

0.1

Focus X dir = 0.0 / Focus Y dir = -1.0

198

12h43

Mars

Pointcross

247

38

-6.2,-7.4,0.06

0.1

Focus X dir = 0.0 / Focus Y dir = 0.0

199

12h45

Mars

Pointcross

247

38

-6.2,-7.4,0.06

0.1

Focus X dir = 0.0 / Focus Y dir = 1.0

200

12h47

Mars

Pointcross

247

38

-6.2,-7.4,0.06

0.1

Focus X dir = 0.0 / Focus Y dir = 2.0. Scan incomplete. Lost connection to NIKA2 machine.

201

13h08

Mars

Pointcross

252

33

-6.2,-7.4,0.06

0.1

Test scan after getting NIKA2 back on line.

202

13h11

Mars

Pointcross

252

33

-6.2,-7.4,0.06

0.1

Focus X dir = 0.0 / Focus Y dir = 2.0. Redoing scan 200.

203

13h14

Mars

Pointcross

253

33

-6.2,-7.4,0.06

0.1

Focus X dir = 0.0 / Focus Y dir = -1.0. Repeating scan with the best focus parameters.

204

13h17

Mars

Pointcross

254

32

-6.2,-7.4,0.06

0.1

Focus X dir = 0.0 / Focus Y dir = 1.0. This one gives best elipticity. Now we adjust the pointing to optimize around this position.

205

13h22

Mars

Pointcross

254

31

-10.9,-6.7,0.06

0.1

Focus X dir = 0.0 / Focus Y dir = 1.0. Best focus parameters estimated by NP's routine (ellipticity).

206

13h23

Mars

Pointcross

254

31

-10.9,-6.7,0.06

0.1

Focus X dir = 0.0 / Focus Y dir = 1.0. Repeating last scan, result seemed suboptimal.

207

13h26

Mars

Pointcross

255

30

-10.9,-6.7,0.06

0.1

Focus X dir = -1.2 / Focus Y dir = 0.0. Checking pointing for testing best focus parameters estimated by SL (shape of secondary lobe on beam profile).

208

13h30

Mars

Pointcross

256

29

-14.3,-14.0,0.06

0.1

Focus X dir = -1.2 / Focus Y dir = 0.0. Checking pointing for testing best focus parameters estimated by SL.

209

13h33

Mars

Pointcross

256

29

-3.6,-10.8,0.06

0.1

Focus X dir = -1.2 / Focus Y dir = 0.0. Testing best focus parameters estimated by SL.

210

13h37

Mars

Pointcross

257

28

-3.6,-10.8,0.06

0.1

Focus X dir = 0.71 / Focus Y dir = 0.71.

211

13h39

Mars

Pointcross

257

28

-3.6,-10.8,0.06

0.1

Focus X dir = -0.71 / Focus Y dir = 0.71. Clouds are approaching, taumeter stopped.

212

13h41

Mars

Pointcross

257

27

-3.6,-10.8,0.06

0.1

Focus X dir = -0.71 / Focus Y dir = -0.71. More clouds, beams are getting larger.

213

13h43

Mars

Pointcross

258

27

-3.6,-10.8,0.06

0.1

Focus X dir = 0.71 / Focus Y dir = -0.71.

214

13h46

Mars

Focustrack

258

26

-3.6,-10.8,0.06

0.1

Axis=X. Focus X dir = 0.0 / Focus Y dir = 0.0. Small clouds crossing the line of sight.

215

13h49

Mars

Focustrack

259

26

-3.6,-10.8,0.06

0.1

Axis=Y. Focus X dir = 0.0 / Focus Y dir = 0.0. Small clouds crossing the line of sight.

216

13h54

Mars

Pointcross

260

25

-3.6,-10.8,0.06

0.1

Focus X dir = 0.2 / Focus Y dir = 0.25. Best focus parameters estimated by NP's routine.

217

13h57

Mars

Focustrack

260

24

-3.6,-10.8,0.06

0.1

Axis=Z. Focus X dir = 0.2 / Focus Y dir = 0.25.

218

14h01

Mars

Focustrack

261

23

-3.6,-10.8,0.06

0.1

Axis=Z. Focus X dir = 0.2 / Focus Y dir = 0.25. Retrying this set of parameters. The clouds are making this test hard.

219

14h06

Mars

Focustrack

262

22

-3.6,-10.8,0.4

0.1

Axis=Z. Focus X dir = 0.2 / Focus Y dir = 0.25. Retrying around Focus Z=0.4. Mars is setting, looking for another point source. The degradation of the beam due to the sky conditions makes it hard to conclude on the optimal focus parameters.

220

14h33

3C279

Track point

234

29

-3.6,-10.8,0.4

0.1

221

14h36

3C279

Pointcross

234

29

-3.6,-10.8,0.4

0.1

Checking pointing.

222

14h39

3C279

Pointcross

234

29

-14.2,-10.2,0.4

0.1

Source too faint at 1mm, not worht the effort. Proceeding to test PAKO routines.

223

14h43

3C279

focusliss

235

28

-14.2,-10.2,0.4

0.1

Axis=Z. Clouds situation worsens.

224

14h49

3C279

focusliss

236

27

-14.2,-10.2,0.4

0.1

Axis=Y. Reseting taumeter.

225

14h57

3C279

focusliss

238

26

-14.2,-10.2,0.4

0.1

Axis=X. Taumeter still down.

226

15h15

3C279

skydip

240

n.a

-14.2,-10.2,0.4

tau meter down. clouds. Seems that the skydip script needs still to be edited with current elevation

227

15h20

3C279

track

243

22

-14.2,-10.2,0.4

0.15

tau meter back up.

228

15h20

3C279

pointcross

243

22

-14.2,-10.2,0.4

0.15

decent 2mm fit -11.2, -10.5

229

15h25

3C279

otfgeom

244

20

-11.2, -10.5, 0.4

0.2

very poor FHWM (21 and 25")

230

15h49

3C279

focustrack

248

16

-11.2, -10.5, 0.4

0.2

acquisition lost in the middle. source too low to start again

231

15h51

saturn

track

199

31

-11.2, -10.5, 0.4

0.2

moving to saturn

232

15h55

saturn

pointcross

199

31

-11.2, -10.5, 0.4

0.2

failed to fit. moving to IRAS16293 to point

233

16h00

IRAS16293

track

192

27

-11.2, -10.5, 0.4

0.2

234

16h00

IRAS16293

pointcross

192

27

-11.2, -10.5, 0.4

0.2

set pointing -18.8 -15.6

235-239

16h06

IRAS16293

focuslissold

193

27

-18.8, -15.6, 0.4

0.2

FWHM large (> 20") but source extended (10") so we believe the current focus is correct

240

16h10

saturn

track

207

29

-18.8, -15.6, 0.4

0.2

clouds again

241-243

16h12

saturn

beammap

207

28

-18.8, -15.6, 0.4

0.2

244

17h20

skydip

218

n/a

-18.8, -15.6, 0.4

0.2

245

17h28

G34.3

track

178

54

-18.8, -15.6, 0.4

0.2

246

17h31

G34.3

pointcross

178

54

-18.8, -15.6, 0.4

0.2

source profile shows structure at 2mm in azimuth. not good

247

17h28

NGC7027

track

67

65

-18.8, -15.6, 0.4

0.2

248

17h31

NGC7027

pointcross

67

66

-18.8, -15.6, 0.4

0.2

Not super bright but OK

249-253

17h40

NGC7027

focuslissold

67

66

-12.9, 6.9, 0.4

0.2

scans 252 and 253 were merged in a single file ???

254

18h06

NGC7027

track

66

71

-12.9, 6.0, 0.4

0.2

255-259

18h10

NGC7027

focuslissold

66

71

-12.9, 6.0, 0.4

0.2

nk_focusliss_old fails

260-264

18h18

NGC7027

focuslissold

66

71

-12.9, 6.0, 0.4

0.2

scans 261 and 262 merged in file 261. Che palle !

265

18h33

NGC7027

manual lissajous

63

75

-12.9, 6.0, -0.1

0.2

266

18h33

NGC7027

manual lissajous

63

75

-12.9, 6.0, -0.8

0.2

267

18h40

2251+158

track

67

65

-12.9, 6.0, -0.8

0.2

aka 4C454

268

18h42

2251+158

pointcross

67

66

-12.9, 6.0, -0.8

0.2

OK appear clearly in both bands

269-273

18h45

2251+158

focuslissold

66

71

-12.9, 6.0, -0.8

0.2

NK2015_Oct15X (last edited 2015-10-16 10:53:46 by NikaBolometer)