C2050 G309
G309 (C2050 Candidate)
April 2009
- Details of observations can be found here
- G309 was observed at 33/35 GHz, 44/46 GHz, 93/95 GHz
- Phase calibrator was 1613-586
- Flux calibrator was Uranus at all frequencies
- Only including data that was observed between 30 <= elevation <= 90 degrees
Reduction
- ATLOD
- UVSPLIT
- options=nosource
- UVFLAG
- for each frequency
- select=auto / edge=100 / common bad CABB channels
- UVSPLIT
- for each frequency
- MFCAL
- 1253-055 as bandpass calibrator
- interval=0.1, refant=2
- GPCOPY
- vis=1253-055, out=uranus
- MFBOOT
- vis=uranus,1253-055, select=source(uranus), clip=0.5
- GPCOPY
- vis=1253-055, out=1613-586
- MFCAL
- vis=1613-586, interval=0.1, refant=2, options=nopassol
- GPBOOT
- vis=1613-586, cal=1253-055
- GPCOPY
- vis=1613-586, out=g309
33/35 GHz
This source appears resolved, as the flux on CA06 baselines is much lower than on the smaller baselines.
The phase calibrator does not show this behaviour.
Looking at the smaller baselines for G309 reveals that it looks point-like for baselines less than 168m in length. We'll need to investigate exactly what configurations this source will be useful in.
Doing the same reduction at 35 GHz, I decided to show the averaged uvplt output (ie. no options=nofqav).
It looks here as though G309 is quite resolved as well. I don't think I'm going to waste more time reducing G309 for this epoch.
page revision: 7, last edited: 14 Oct 2009 03:44