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''' FOR THE ENTIRE SESSION NO ANTENNA DATA DUE TO SW PROBLEMS '''

NIKA January 20th, 2014 / S1

Back to list of day to day logbook of observations

2014-01-20

  • Cryostat Temperature: 150mK (regulated, RMS ripple 0.03mK).
  • Arrays status tonight: 128 pixels 2mm - 1Hz noise; 196 pixels 1mm 3-5Hz noise

Modulation frequency: 8kHz 1mm, 5kHz 2mm

Opacity is measured with the new taumeter at 225 GHz

Nasmyth offsets : 0, 0

Set pointing : 0, 0

Set Focus : -2.40 mm

  • Quick description of the session: Test the Pako sequences and data flows.

FOR THE ENTIRE SESSION NO ANTENNA DATA DUE TO SW PROBLEMS

Scan

UT

Source

Command

Az

El

Pointing X, Y, Focus

Tau225

Comment

188-192

17h15

Uranus

Track off -200 -200

200

55

0,0,-2.4

0.004

Flux 42/16Jy. Expected KID signal > 9KHz/1KHz (AM)

193

17h35

Uranus

Cross

120

55

0,0,-2.4

0.004

SEEN URANUS !!! 1KHz/10kHz as expected

194

17h40

Uranus

Focus

200

54

0,0,-2.4

0.02

195

17h45

DIY skydip_test

190

na

0,0,-2.4

0.02

196

17h50

Uranus

OTF_geom

204

53

0,0,-2.4

0.03

NOISE 0.8Hz/3-5Hz on two arrays. ONE JUMP IN TT JUST BEFORE SEEING THE SOURCE

197

18h00

DIY skydip_up

200

na

0,0,-2.4

0.044

198

18h05

Uranus

Track off -200 -200

212

51

0,0,-2.4

0.02

199

18h05

Uranus

pointliss

212

51

0,0,-2.4

0.025

200-204

18h10

Uranus

focusliss

212

51

0,0,-2.4

0.096

205

18h15

Uranus

OTF_geom

204

53

0,0,-1.4

0.03

Test OTF_geom with a different focus

206

18h25

DIY skydip_up

200

na

0,0,-1.4

0.014

207

18h30

Uranus

Track off -200 -200

212

51

0,0,-2.4

0.02

After this scan radio-alignment in the cabin (15 minutes). Gained 2.5/7.5kHz in background on 1/2mm. More or less equivalent to Uranus, so I would say something like 2K ??

208-209

18h50

DIY skydip_updown

290

na

0,0,-2.4

Strange peak at 0.4, otherwise around 0.08

NK2014_Jan20 (last edited 2014-01-22 09:28:35 by NikaBolometer)