Scan

UT

Source

Command

Az

El

Pointing X, Y, Focus

Tau225

Comment

140

~ 16h

Mars

Track

closed window, test data tranfert

141

16h05

Mars

Cross

277.687

26.626

0.0 0.0 -2.4

0.862

opened window, test arrays frequencies

142

16h30

Mars

OTF_geom

277

26.6

0.0 0.0 -2.4

0.85

Juan put Nasmyth offset to 0 in pointing model; this is our starting point before the session ; tuning during the scan

143

16h34

Mars

otf_geom

281

20.6

0.0 0.0 -2.4

0.85

still tests and tunes on arrays (after scan), some resonances lost, auto tune was not on, find again by hand...

144

17h09

3C279

track

130

33.6

0.0 0.0 -2.4

0.828

Expected flux: 11-20 Jy

145

17h15

3C279

otf_geom

131.4

34.0

0.0 0.0 -2.4

0.822

looks like some resonances still lost, do manual sweep to get them back while otf being processed and analyzed

146

17h45

3C279

otf_geom

134

36

0.0 0.0 -2.4

0.814

All resonances are found. Auto tuning on from now on

147

17h57

3C279

pointing_cross

140

39

0.0 0.0 -2.4

0.814

to test cross scan and file while RA & NP process the otf to determine the ref pix

148

18h01

3C279

pointing_lissajous

140

39

0.0 0.0 -2.4

0.814

to test cross scan and file while RA & NP process the otf to determine the ref pix ; cryostat warming up a bit

149

18h02

3C279

pointing_lissajous

140

39

0.0 0.0 -2.4

0.814

Testing small 1.5'x1.5' lissajous map

150

18h04

3C279

pointing_lissajous

149

42

0.0 0.0 -2.4

0.814

151

18h16

3C279

faintSource_lissajous

149

42

0.0 0.0 -2.4

0.76

Same lissajous curve parameter as above, longer integration (to be used typically on faint sources)

152

18h31

Az=150

diydown (skydip)

150

65

0.0 0.0 -2.4

0.76

Track - testing skydip with Track at starting elevation to let the KID be tuned

153

18h32

Az=150

diydown (skydip)

150

65

0.0 0.0 -2.4

0.76

Track - testing skydip with Track at starting elevation to let the KID be tuned

154

18h33

Az=150

diydown (skydip)

150

65

0.0 0.0 -2.4

0.76

diy command failed at the first commanded elevation was 120 degrees!! My mistake, the original script was wrongly modified

155

18h35

Az=180

diyup (skydip)

180

20

0.0 0.0 -2.4

0.76

testing skydip with Track at starting elevation to let the KID be tuned

156

18h38

Az=180

diyup (skydip)

180

20

0.0 0.0 -2.4

0.76

Actual skydip -- KIDs have lost the resonances...

157

18h38

Az=180

diyup (skydip)

180

20

0.0 0.0 -2.4

0.76

Track to tune the KIDs at 20 degrees elevation, but telescope go back to 10 degrees after

158

19h03

Az=180, el=20

diyup (skydip)

180

20

0.0 0.0 -2.4

0.76

Track to tune the KIDs at 20 degrees elevation (specifying a source at el.=20)

159

19h10

Az=180, el=20

diyup (skydip)

180

20

0.0 0.0 -2.4

0.76

seems to have worked ok

160

19h19

3C279

track

169

46

0.0 0.0 -2.4

0.752

Reference pixel is 434 and 28 (offline team NP, RA, AC, )

161

19h26

3C279

pointing_cross

172

47

0.0 0.0 -2.4

0.760

Try to find a pointing correction

162

19h30

3C279

pointing_cross

172

47

0.0 0.0 -2.4

0.760

Try to find a pointing correction

163

19h41

3C279

pointing lissajou

175

47

0.0 0.0 -2.4

0.760

Try to find a pointing correction

164

19h50

3C279

pointing lissajou

182

47

0.0 0.0 -2.4

0.760

Try to find a pointing correction

165

20h05

3C279

pointing cross

185.5

46.9

+25 0.0 -2.4

0.760

Try to find a pointing correction

166

20h05

3C279

pointing cross

185.5

46.9

+25 +25 -2.4

0.760

Try to find a pointing correction ; pointing requested too big (>50) ; go try radio alignment even if sky not great, screws: Corridor side = 4.12, Wall side = 4.02

167

20h49

3C279

pointing cross

201

44.8

+25 +25 -2.4

0.760

radio alignment was actually doable, screws: C = 3.70 => gain ~1kHz, W = 3.02 => gain <0.5 kHz ; maybe problem at the end of the scan

167

20h49

3C279

pointing cross

201

44.8

+25 +25 -2.4

0.760

=> radio alignment get better background & better pointing (now pointing offset requested are in range)

169

21h10

3C279

pointing cross

207

43.0

-5 -15 -2.4

0.760

170

21h12

3C279

pointing cross

207

43.0

-20 -10 -2.4

0.750

set pointing variation is very big => axis of rotation is far from our ref pixel ; check other pixels => 181 and 505 seem close to the axis of rotation, far from 434 and 28 => tomorrow set nasmyth offset in starting pointing model asap in order to use 434 and 28 as reference for the pointing session

171

21h26

3C279

pointing cross

212

41.3

0 -2 -2.4

0.750

too late for the pointing session, so for now we use pixels 181 and 505 as ref to check focus, pointing and will find which nasmyth offset we need to choose 432 and 28 as ref tomorrow

172

21h51

3C279

focus

212

41.3

0 -2 -2.4

0.750

173

21h51

3C279

focus lissajou

212

41.3

0 -2 -2.4

0.750

174

21h51

3C279

focus lissajou

212

41.3

0 -2 -3.0

0.750

175

21h51

3C279

focus lissajou

212

41.3

0 -2 -3.6

0.750

176

21h51

3C279

focus lissajou

212

41.3

0 -2 -1.8

0.750

177

21h51

3C279

focus lissajou

212

41.3

0 -2 -1.2

0.750

Quick and dirty reduction gives this focus value closest to the best focus (smallest FWHM)

178

21h58

3C279

pointing cross

212

41.3

0 -2 -2.4

0.750

offset 28 28 /system nasmyth (try to get the rotation axis on pixel 434 and 28)

179

21h58

3C279

pointing cross

212

41.3

0 -2 -2.4

0.750

offset -28 -28 /system nasmyth (try to get the rotation axis on pixel 434 and 28)

180

21h58

3C279

pointing cross

212

41.3

0 -2 -2.4

0.750

offset 28 -28 /system nasmyth (try to get the rotation axis on pixel 434 and 28)

181

21h58

3C279

pointing cross

212

41.3

0 -2 -2.4

0.750

offset -28 28 /system nasmyth (try to get the rotation axis on pixel 434 and 28) => the right correction is 28 28; we will set this value in the pointing model (and set offset 0 0 /system nasmyth) before strating the pointing session