NIKA2 run 6 29 October 2016

Back to list of day to day logbook of observations

2016-10-29

We regulate at 205 mK and we are at 30% on the pump to be on the safe side. We solve the issue with the noise on the 2 mm array which was due to a misbehavior of the synthesizer: Martino told us to restart it and now the noise looks very good. Juan Penalver has provided a new pointing model.

Observers: Juan + Florian -- Operator: Quique

Scan

UT

Source

Command

Az

El

Pointing X, Y, Focus

Tau225

Tau260

Tau150

Comment

167

15h50

Mars

Track

158.19

26.31

0 0 0.00 -0.36 -0.45

0.34

We start a new session (Juan, Florian, operator: Quique). We decide to start by going on Mars for a large map on the sky to get enough flux to sample the far side lobes

168

15h58

Mars

Track -200 -200

159.61

26.72

0 0 0.00 -0.36 -0.45

0.34

Another track to tune the detectors

169

16h00

Mars

Track -200 -200

160.15

26.81

0 0 0.00 -0.36 -0.45

0.34

Another track to tune the detectors

170

16h12

Mars

Track -200 -200

163.14

27.56

0 0 0.00 -0.36 -0.45

0.34

Another track to tune the detectors

171

16h13

1921-293

Track -200 -200

167.63

22.69

0 0 0.00 -0.36 -0.45

0.28

Another track to tune the detectors

172

16h14

1921-293

pointing b

167.85

22.74

0 0 0.00 -0.36 -0.45

0.28

We do a pointing a another source than Mars to avoid saturation of the detectors --> To faint for a good pointing --> We go on Neptune

173

16h18

Neptune

Track -200 -200

115.25

16.85

0 0 0.00 -0.36 -0.45

0.28

174

16h21

Neptune

pointing b

115.43

17.08

0 0 0.00 -0.36 -0.45

0.33

0.39

0.24

The pointing is really bad... tau is low but fluctuating a lot --> set pointing 3.6 -7.7

175

16h24

Neptune

pointing b

115.99

17.64

3.60 -7.70 0.00 -0.36 -0.45

0.33

0.39

0.24

The pointing is really bad... tau is low but fluctuating a lot --> we go at higher elevation

176

16h28

G34.3

Track -200 -200

178.39

54.10

3.60 -7.70 -0.36 -0.45

0.36

This source is much higher so the pointing should be good

177

16h30

G34.3

pointing b

178.80

54.12

3.60 -7.70 0.00 -0.36 -0.45

0.29

0.39

0.24

Now the pointing is ok --> set pointing 1.90 -5.60

178

16h33

G34.3

pointing b

180.06

54.13

1.90 -5.60 0.00 -0.36 -0.45

0.25

0.39

0.24

Check the pointing --> set pointing 4.10 -4.80

179 - 183

16h36

G34.3

focusOTF-Z

181.40

54.15

4.10 -4.80 0.00 -0.36 -0.45

0.30

0.35

0.24

Now we do a focus along the Z-direction --> set focus 0.5 (weird it seems that the flux keeps increasing --> we do the focus again)

184 - 188

16h46

G34.3

focusOTF-Z

185.49

54.02

4.10 -4.80 0.00 -0.36 0.5

0.42

0.30

0.21

We check the focus along the Z-direction --> set focus 0.61 (now we have good results, with a parabolic variation of the flux but it is still weird that the focus correction is positive)

189

16h55

G34.3

pointing b

189.19

53.76

4.10 -4.80 0.00 -0.36 0.61

0.36

Check the pointing --> set pointing -0.4 -3.3

190

17h04

Neptune

Track -200 -200

123.81

24.70

-0.4 -3.3 0.00 -0.36 0.61

0.28

Now that the pointing and the focus is quite good, we go on Neptune which is high enough to start the beammap sequence (poiniting/focus_X_Y_Z/beammap)

191

17h06

Neptune

pointing b

123.97

24.86

-0.4 -3.3 0.00 -0.36 0.61

0.28

0.27

0.18

First a pointing --> set pointing -1.1 -3.9

192 - 196

17h09

Neptune

focusOTF-Z

124.73

25.46

-1.10 -3.90 0.00 0.00 0.61

0.34

Focus along the Z-direction --> set focus 0.21

197 - 201

17h17

Neptune

focusOTF-Z 0.61

126.26

26.66

-1.10 -3.90 0.00 0.00 0.21

0.36

Check the focus along the Z-direction --> set focus 0.09

202 - 206

17h25

Neptune

focusOTF-X 0

127.91

27.96

-1.10 -3.90 0.00 0.00 0.09 0.09

0.35

0.24

0.17

Focus along the X-direction --> set focus -0.5 /dir X

207 - 211

17h34

Neptune

focusOTF-X -0.5

129.86

29.33

-1.10 -3.90 -0.50 0.00 0.09

0.24

0.23

0.17

Check the focus along the X-direction --> set focus -0.56 /dir X

212 - 216

17h25

Neptune

focusOTF-Y 0

131.77

30.59

-1.10 -3.90 -0.56 0.00 0.09

0.77

0.24

0.17

Focus along the Y-direction --> set focus 1.04 /dir Y

217 - 221

17h50

Neptune

focusOTF-Y 1.04

133.66

31.72

-1.10 -3.90 -0.56 1.04 0.09

0.30

0.23

0.17

Check the focus along the Y-direction --> set focus 0.86 /dir Y

222 - 226

17h57

Neptune

focusOTF-Z 0.09

135.53

32.81

-1.10 -3.90 -0.56 0.86 0.09

0.29

0.25

0.18

Check the focus along the Z-direction --> set focus -0.06

227

18h07

Neptune

pointing b

137.81

34.06

-1.10 -3.90 -0.56 0.86 -0.06

0.37

Check the pointing before the beammap --> we do not believe the profiles so we do the pointing again

228

18h11

Neptune

pointing b

138.80

34.58

-1.10 -3.90 -0.56 0.86 -0.06

0.24

0.25

0.18

Check the pointing before the beammap --> set pointing -2.00 -2.70

229

18h16

Neptune

beammap1scan99sub

140.71

35.45

-2.00 -2.70 -0.56 0.86 -0.06

0.27

First beammap of the session (in azimuth)

230

18h39

Neptune

beammap1scan99sub

152.49

40.21

-2.00 -2.70 -0.56 0.86 -0.06

0.29

Beammap in elevation

231

19h01

Neptune

Skydip

152.17

27.78

-2.00 -2.70 -0.56 0.86 -0.06

0.23

First skydip of the session

232

19h11

NGC7538

track

382.72

61.43

-2.00 -2.70 -0.56 0.86 -0.06

0.19

We now want to observe secondary calibrators so we start by tracking NGC7538

233

19h20

NGC7538

pointing b

382.37

61.47

-2.00 -2.70 -0.56 0.86 -0.06

0.23

0.19

0.15

Pointing --> set pointing -0.3 -2.9

234-235

19h23

NGC7538

nkotf_square 5

381.95

61.73

-0.30 -2.90 -0.56 0.86 -0.06

0.23

0.19

0.14

We now do 2 OTF scans in RaDec to map the source

236

19h29

CepA

pointing b

376.29

62.81

-0.30 -2.90 -0.56 0.86 -0.06

0.24

Pointing --> set pointing 3.9 1.6

237-238

19h31

CepA

nkotf_square 5

375.88

63.01

3.90 1.60 -0.56 0.86 -0.06

0.18

0.18

0.14

We now do 2 OTF scans in RaDec to map the source

239

19h36

CepA

pointing b

374.55

63.23

3.90 1.60 -0.56 0.86 -0.06

0.23

Wrong source for the pointing --> going on another one

240

19h38

0133+476

pointing b

416.00

49.45

3.90 1.60 -0.56 0.86 -0.06

0.23

0.16

0.13

Pointing --> set pointing -2.5 -2.3

241

19h43

LKH234

pointing b

354.19

60.54

-2.50 -2.30 -0.56 0.86 -0.06

0.23

Pointing --> set pointing 1.5 -1.5

242-243

19h48

LKH234

nkotf_square 5

375.88

63.01

1.50 -1.50 -0.56 0.86 -0.06

0.18

0.17

0.13

We now do 2 OTF scans in RaDec to map the source

244

19h55

DR21OH

track

292.80

70.12

1.50 -1.50 -0.56 0.86 -0.06

0.20

Going on DR21OH before the pointing

245

19h58

DR21OH

pointing b

375.88

63.01

1.50 -1.50 -0.56 0.86 -0.06

0.20

0.16

0.13

Pointing --> set pointing -0.3 -2.9

246-247

20h02

DR21OH

nkotf_square 8

292.52

69.47

-0.3 -2.9 -0.56 0.86 -0.06

0.18

0.17

0.13

We now do 2 OTF scans in RaDec to map the source

248

20h12

NGC7027

track

293.47

72.41

-0.3 -2.9 -0.56 0.86 -0.06

0.20

Going on NGC7027 before the pointing

249

20h14

NGC7027

pointing b

293.53

72.16

-0.3 -2.9 -0.56 0.86 -0.06

0.20

Pointing --> set pointing 3.0 4.6

250-254

20h16

NGC7027

focusOTF-Z -0.06

293.31

71.54

3.00 3.0 4.6 -0.56 0.86 -0.06

0.20

0.17

0.13

Check the focus along the Z-direction --> set focus -0.26

255-256

20h25

NGC7027

nkotf_square 5

292.67

70.10

3.00 4.60 -0.56 0.86 -0.26

0.35

0.15

0.12

We now do 2 OTF scans in RaDec to map the source

257

20h32

CRL2688

track

276.99

67.84

3.00 4.60 -0.56 0.86 -0.26

0.20

Going on CRL2688 before the pointing

258

20h32

CRL2688

pointing b

277.22

67.63

3.00 4.60 -0.56 0.86 -0.26

0.19

0.15

0.12

Pointing --> set pointing 1.0 1.1

259-260

20h33

CRL2688

nkotf_square 5

277.3

67.24

1.0 1.1 -0.56 0.86 -0.26

0.27

We now do 2 OTF scans in RaDec to map the source

261

20h40

MWC349

track

288.24

60.87

1.0 1.1 -0.56 0.86 -0.26

0.20

Going on MWC349 before the map

262-263

20h41

MWC349

nkotf_square 5

288.32

60.57

1.0 1.1 -0.56 0.86 -0.26

0.20

We now do 2 OTF scans in RaDec to map the source

264

20h46

G45.1

track

258.89

31.37

1.0 1.1 -0.56 0.86 -0.26

0.20

Going on G45.1 before the pointing

265

20h48

G45.1

pointing b

259.11

31.18

1.0 1.1 -0.56 0.86 -0.26

0.20

Pointing --> set pointing -1.1 4.6

266-267

20h50

G45.1

nkotf_square 5

259.83

30.40

-1.10 4.60 -0.56 0.86 -0.26

0.20

0.16

0.13

We now do 2 OTF scans in RaDec to map the source

268

20h56

W51

track

262.16

33.79

-1.10 4.60 -0.56 0.86 -0.26

0.20

Going on W51 before the pointing

269

20h57

W51

pointing b

262.16

33.79

-1.10 4.60 -0.56 0.86 -0.26

0.20

0.17

0.13

Pointing not convincing because extended source

270-271

21h00

W51

nkotf_square 5

263.01

32.97

-1.10 4.60 -0.56 0.86 -0.26

0.16

0.17

0.13

We now do 2 OTF scans in RaDec to map the source

272

21h06

K3-50A

track

280.61

48.25

-1.10 4.60 -0.56 0.86 -0.26

0.20

Going on K3-50A before the map

273-274

21h07

K3-50A

nkotf_square 5

280.61

48.25

-1.10 4.60 -0.56 0.86 -0.26

0.20

0.16

0.13

We now do 2 OTF scans in RaDec to map the source

275

21h13

DR21OH

track

292.44

56.04

-1.10 4.60 -0.56 0.86 -0.26

0.27

Going back on DR21OH for another map because the 244 seems corrupted

276-277

21h14

DR21OH

nkotf_square 5

292.49

55.99

-1.10 4.60 -0.56 0.86 -0.26

0.27

We now do 2 OTF scans in RaDec to map the source

278

21h19

DR21OH

skydip

292.15

19.23

-1.10 4.60 -0.56 0.86 -0.26

0.14

Second skydip of the session (the Mac12 crashed)

279

21h29

2013+370

track

292.15

19.23

-1.10 4.60 -0.56 0.86 -0.26

0.14

going on a quasar for a pointing

280

21h30

2013+370

pointing b

286.80

47.44

-1.10 4.60 -0.56 0.86 -0.26

0.14

Pointing --> set pointing -1.0 -0.1

281

21h35

2121+053

track

237.36

42.80

-1.0 -0.1 -0.56 0.86 -0.26

0.14

going on a quasar for a pointing at ~40 degree for the forthcoming skydip slew

282

21h37

2121+053

pointing b

237.49

42.75

-1.0 -0.1 -0.56 0.86 -0.26

0.14

Pointing --> set pointing -2.4 -0.2

283

21h40

2121+053

skydip slew

286.80

47.44

-2.4 -0.2 -0.56 0.86 -0.26

0.14

First skydip slew of the session

284

21h56

2145+067

track

237.42

44.68

-2.4 -0.2 -0.56 0.86 -0.26

0.38

Going on Uranus passing by several quasars for the pointing model

285

21h57

2145+067

pointing b

237.43

44.66

-2.4 -0.2 -0.56 0.86 -0.26

0.20

0.15

0.12

Pointing --> set pointing -2.5 -0.5

286

22h01

2243+123

track

209.14

35.90

-2.5 -0.5 -0.56 0.86 -0.26

0.20

Going on Uranus passing by several quasars for the pointing model

287

22h03

2243+123

pointing b

209.43

35.82

-2.5 -0.5 -0.56 0.86 -0.26

0.34

0.14

0.12

Pointing --> set pointing -2.4 0.9

288

22h07

2251+158

track

209.14

35.90

-2.4 0.9 -0.56 0.86 -0.26

0.20

Going on Uranus passing by several quasars for the pointing model

289

22h08

2251+158

pointing b

209.43

35.82

-2.4 0.9 -0.56 0.86 -0.26

0.34

0.14

0.12

Pointing --> set pointing -2.2 0.6

290

22h13

0003-066

track

190.11

46.04

-2.2 0.6 -0.56 0.86 -0.26

0.24

Going on Uranus passing by several quasars for the pointing model

291

22h14

0003-066

pointing b

190.47

46.01

-2.2 0.6 -0.56 0.86 -0.26

0.24

Pointing --> set pointing -1.6 0.4

292

22h18

0106+013

track

167.43

53.90

-1.6 0.4 -0.56 0.86 -0.26

0.14

Going on Uranus passing by several quasars for the pointing model

293

22h19

0106+013

pointing b

167.82

53.95

-1.6 0.4 -0.56 0.86 -0.26

0.10

Pointing --> set pointing -0.7 0.8

294

22h22

Uranus

track

161.01

59.54

-0.7 0.8 -0.56 0.86 -0.26

0.24

Now on Uranus for a beammap sequence

295

22h23

Uranus

pointing b

161.43

59.61

-0.7 0.8 -0.56 0.86 -0.26

0.24

0.15

0.12

Pointing --> set pointing -0.1 0.9

296-300

22h27

Uranus

focusOTF-Z -0.26

163.19

59.86

-0.1 0.9 -0.56 0.86 -0.26

0.24

Check the focus along the Z-direction --> set focus -0.33

301-305

22h35

Uranus

focusOTF-X -0.56

166.72

60.25

-0.1 0.9 -0.56 0.86 -0.33

0.18

Check the focus along the X-direction --> set focus -0.60 /dir X

306-310

22h42

Uranus

focusOTF-Y -0.86

170.44

60.52

-0.1 0.9 -0.60 0.86 -0.33

0.32

Check the focus along the Y-direction --> set focus 0.49 /dir Y

311

22h48

Uranus

pointing b

174.23

60.67

-0.10 0.90 -0.60 0.49 -0.33

0.25

0.14

0.12

Pointing --> set pointing 1.0 0.8

312

22h51

Uranus

beammap1scan99sub

175.97

60.70

1.00 0.80 -0.60 0.49 -0.33

0.25

Beammap on Uranus at nominal focus

313

23h16

Uranus

beammap1scan99sub

199.21

59.56

1.00 0.80 -1.1 0.49 -0.33

0.11

Beammap on Uranus with a shift of the X-focus by -0.5

314

23h41

Uranus

beammap1scan99sub

210.30

57.46

1.00 0.80 -1.6 0.49 -0.33

0.23

Beammap on Uranus with a shift of the X-focus by -1.0

1

00h04

Uranus

beammap1scan99sub

216.66

55.68

1.00 0.80 -0.1 0.49 -0.33

0.16

Beammap on Uranus with a shift of the X-focus by +0.5

2

00h29

Uranus

beammap1scan99sub

219.69

54.46

1.00 0.80 0.4 0.49 -0.33

0.38

Beammap on Uranus with a shift of the X-focus by +1.0

Observers are now Charles, Xavier & Helene

3

00h52

Uranus

beammap1scan99sub

228

51

1.00 0.80 -0.60 -0.01 -0.33

0.24

0.13

0.11

Beammap on Uranus with a shift of the Y-focus by -0.5

4

01h16

Uranus

beammap1scan99sub

235

47

1.00 0.80 -0.60 -0.51 -0.33

Beammap on Uranus with a shift of the Y-focus by -1.0

5

01h40

Uranus

beammap1scan99sub

241

43

1.00 0.80 -0.60 0.99 -0.33

0.13

0.11

Beammap on Uranus with a shift of the Y-focus by +0.5

6

02h04

Uranus

beammap1scan99sub

246

39

1.00 0.80 -0.60 1.49 -0.33

Beammap on Uranus with a shift of the Y-focus by +1.0

7

02h27

Uranus

beammap1scan99sub

251

35

1.00 0.80 -0.60 0.49 -0.33

Beammap on Uranus back to optimal foci

8

02h52

Uranus

nkpoint b

1.00 0.80 -0.60 0.49 -0.33

0.13

0.11

set pointing -1.6 -0.9

9

02h53

NGC891

track

1.00 0.80 -0.60 0.49 -0.33

We need to point and focus first...

10

02h54

3C84

track

1.00 0.80 -0.60 0.49 -0.33

on our way to N891

11

02h55

3C84

nkpoint b

290

67

1.00 0.80 -0.60 0.49 -0.33

set pointing 2.9 -0.8

12 - 16

03h00

3C84

focusOTF-Z -0.33

290

66

2.9 -0.8 -0.60 0.49 -0.33

12 cancelled because scan does not start

13

03h04

3C84

track

290

66

2.9 -0.8 -0.60 0.49 -0.33

13 cancelled because scan does not start -- problem with the brake in azimuth

14

03h06

3C84

track

290

66

2.9 -0.8 -0.60 0.49 -0.33

communications program restarted

15

03h13

3C84

track

290

65

2.9 -0.8 -0.60 0.49 -0.33

same problem again

16

03h16

3C84

track

290

65

2.9 -0.8 -0.60 0.49 -0.33

17 - 21

03h18

3C84

focusOTF-Z -0.33

290

63

2.9 -0.8 -0.60 0.49 -0.33

set focus -0.13

22

03h28

3C84

focusOTF-X -0.60

290

63

2.9 -0.8 -0.60 0.49 -0.13

cancelled

23

03h34

3C84

track

290

61

2.9 -0.8 -0.60 0.49 -0.13

cancelled -- communications system has to be rebooted again

24

03h47

3C84

track

290

60

2.9 -0.8 -0.60 0.49 -0.13

25 - 29

03h51

3C84

focusOTF-X -0.30

291

57

2.9 -0.8 -0.30 0.49 -0.13

set focus /dir x -0.3 (closer to 0 to help the fit)

30 - 34

03h59

3C84

focusOTF-Y 0.25

291

55

2.9 -0.8 -0.60 0.25 -0.13

0.14

0.12

set focus /dir y 0.3 (closer to 0 to help the fit)

35

04h07

3C84

nkpoint b

291

54

2.9 -0.8 -0.60 0.3 -0.13

set pointing 0.2 0.4

36

04h09

NGC891

track

296

43

0.2 0.4 -0.60 0.3 -0.13

37

04h10

NGC891

nkotf 10 10 -22.5 0 20 40 radec

296

43

0.2 0.4 -0.60 0.3 -0.13

38

04h19

NGC891

nkotf 10 10 67.5 0 20 40 radec

296

41

0.2 0.4 -0.60 0.3 -0.13

39

04h28

NGC891

nkotf 12.5 12.5 -22.5 0 20 60 radec

298

40

0.2 0.4 -0.60 0.3 -0.13

0.14

0.12

We're trying higher speed to test whether it helps noise subtraction.

40

04h28

NGC891

nkotf 12.5 12.5 67.5 0 20 60 radec

298

38

0.2 0.4 -0.60 0.3 -0.13

0.14

0.12

41

04h47

NGC891

nkotf 12.5 12.5 -22.5 0 20 60 radec

299

36

0.2 0.4 -0.60 0.3 -0.13

42

04h57

NGC891

nkotf 12.5 12.5 67.5 0 20 60 radec

300

35

0.2 0.4 -0.60 0.3 -0.13

43

05h04

skydip

0.2 0.4 -0.60 0.3 -0.13

44

05h16

W3OH

track

324

38

0.2 0.4 -0.60 0.3 -0.13

We move on to secondary calibrators.

45

05h17

W3OH

nkpoint b

324

38

0.2 0.4 -0.60 0.3 -0.13

set pointing 0.8 -0.7

46 & 47

05h20

W3OH

nkotf square 5

324

37

0.8 -0.7 -0.60 0.3 -0.13

48

05h25

GL490

track

319

44

0.8 -0.7 -0.60 0.3 -0.13

49 & 50

05h26

GL490

nkotf square 5

319

44

0.8 -0.7 -0.60 0.3 -0.13

0.18

0.14

51

05h34

M82

track

376

54

0.8 -0.7 -0.60 0.3 -0.13

cancelled

52

05h38

M82

track

376

54

0.8 -0.7 -0.60 0.3 -0.13

cancelled

53

05h42

M82

track

376

54

0.8 -0.7 -0.60 0.3 -0.13

cancelled

54

05h44

M82

track

376

54

0.8 -0.7 -0.60 0.3 -0.13

55

05h49

M82

track

376

54

0.8 -0.7 -0.60 0.3 -0.13

cancelled

56

05h52

M82

track

376

54

0.8 -0.7 -0.60 0.3 -0.13

57 & 58

05h52

M82

nkotf square 5

374

55

0.8 -0.7 -0.60 0.3 -0.13

0.2

0.15

59 & 60

05h57

M82

nkotf square 5

374

55

0.8 -0.7 -0.60 0.3 -0.13

61

06h02

CRL618

track

286

46

0.8 -0.7 -0.60 0.3 -0.13

62

06h05

CRL618

nkpoint b

286

46

0.8 -0.7 -0.60 0.3 -0.13

0.2

0.15

set pointing 0.2 -1.5

63 & 64

06h09

CRL618

nkotf square 5

286

45

0.2 -1.5 -0.60 0.3 -0.13

0.2

0.15

A few KIDS at 2mm oscillate between up and down states.

65

06h14

HL Tau

track

268

34

0.2 -1.5 -0.60 0.3 -0.13

66

06h15

HL Tau

nkpoint b

268

34

0.2 -1.5 -0.60 0.3 -0.13

set pointing -0.9 -0.8

67 & 68

06h16

HL Tau

nkotf square 7

268

34

0.2 -1.5 -0.60 0.3 -0.13

0.2

0.15

map includes L1551IRS5

69

06h25

Lutetia

track

215

71

0.2 -1.5 -0.60 0.3 -0.13

faint asteroid before going to Vesta

70 & 71

06h26

Lutetia

nkotf square 5

216

71

0.2 -1.5 -0.60 0.3 -0.13

0.19

0.14

not detected in quicklook map

72 & 73

06h32

Lutetia

nkotf square 5

218

71

0.2 -1.5 -0.60 0.3 -0.13

74

06h36

Vesta

track

209

70

0.2 -1.5 -0.60 0.3 -0.13

75

06h38

Vesta

nkpoint b

209

70

0.2 -1.5 -0.60 0.3 -0.13

set pointing 0.9 0.4

76 & 77

06h39

Vesta

nkotf square 5

211

69

0.2 -1.5 -0.60 0.3 -0.13

0.18

0.14

78

06h44

IRC10216

track

155

64

0.2 -1.5 -0.60 0.3 -0.13

79 & 80

06h46

IRC10216

nkotf square 5

156

64

0.2 -1.5 -0.60 0.3 -0.13

0.18

0.14

81

06h54

Alf Ori

track

249

36

0.2 -1.5 -0.60 0.3 -0.13

82 & 83

06h54

Alf Ori

nkotf square 5

249

36

0.2 -1.5 -0.60 0.3 -0.13

NK2run6_20161029 (last edited 2016-10-30 06:55:19 by NikaBolometer)