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lbaops:lbajun2017:v547c

v547c

Description 3D Kinematics in G339.884-1.259 at 10 to 1000 AU Scales
Antennas At-Cd-Ho-Mp-Pa-Ti
Start 165 07:00:00
Stop 165 20:00:00
PI V. Krishnan

Setup v547c.1cm:

Station Modes At Mp Pa Ti
Channel 1 IFP#1-LO 22230 - 22246 MHz USB RCP
Channel 2 IFP#1-HI 22246 - 22262 MHz USB RCP
Channel 3 IFP#2-LO 22230 - 22246 MHz USB LCP
Channel 4 IFP#2-HI 22246 - 22262 MHz USB LCP
DAS 1 Skyfreq 22246 MHz
Bandwidth 16 MHz
DAS Mode vsop.pro (telescope)
Station Modes Cd
Channel 1 22230 - 22246 MHz USB RCP
Channel 2 22230 - 22246 MHz USB LCP
Channel 3 22246 - 22262 MHz USB RCP
Channel 4 22246 - 22262 MHz USB LCP
Bandwidth 16 MHz
DAS Mode Mark5
Station Modes Ho
Channel 1 22230 - 22246 MHz USB RCP
Channel 2 22230 - 22246 MHz USB LCP
Channel 3 22246 - 22262 MHz USB RCP
Channel 4 22246 - 22262 MHz USB LCP
Bandwidth 16 MHz
DAS Mode Mark5

Ftp: ftp://ftp.atnf.csiro.au/pub/people/vlbi/v547/v547c


Comments:

Breakdown of the schedule:

07:00 - 08:00 Fringe check
08:00 - 08:05 Delay calibrator scan (3C273)
08:05 - 10:20 G339.884-1.2
10:20 - 10:31 Delay calibrator scan (3C273)
10:31 - 12:50 G339.884-1.2
12:50 - 13:13 Delay calibrator scan (1921-293) & D-terms
13:13 - 16:26 G339.884-1.2
16:26 - 16:58 Delay calibrator scan (1921-293) & D-terms
16:58 - 18:08 G339.884-1.2
18:38 - 18:30 Delay calibrator scan (1921-293) & D-terms
18:30 - 19:38 G339.884-1.2
19:38 - 20:00 Delay calibrator scan (1921-293) & D-terms

The aim of our project is to conduct astrometric observations of the 22 GHz water masers in G339.884-1.259 to sub-milliarcsecond accuracy. We will be phase referencing this source with respect to J1706-4600 to determine the absolute proper motions of the maser features to probe the 3D gas dynamics at scales of 10 to 1000 AU to understand the outflow structure of this source.

Phase referencing observations will be interspersed with scans on PKS1934-638 for D-term leakage for polarisation measurements. Unlike the previous two sessions, we will not be employing the geodetic block segments, thereby streamlining the observation requirements.

Maser emission for G339.884-1.259 is at approximately 22,237.57 MHz.

Observing comments for each antenna:

Hobart, Ceduna:

The 4 x 16 MHz bandpass setup requires feeding two separate LOs into IFP#1 and #2 on the DAS/frequency translator.

bbc01d is for single frequency (467 MHz)

ATCA:

Please, phase-up antennas CA01 through CA05 for this experiment. During phase-referencing have scheduled regular 3m scans (including slew time with a frequency of ~15 mins) of 1646-50 to re-phase the array.

Parkes:

G339.884-1.2 will be set and there will be no observations between ~UT 18:36 - 19:38.

Previously when we had the ICRF blocks, we had to change the DAS profile and attenuation manually, but will not be necessary now: http://www.atnf.csiro.au/vlbi/dokuwiki/doku.php/lbaops/lbaoct2016/v547a http://www.atnf.csiro.au/vlbi/dokuwiki/doku.php/lbaops/lbamar2017/v547b

Observing comments for each antenna:

Observing Logs

Weather

Monica log information

lbaops/lbajun2017/v547c.txt · Last modified: 2017/06/08 17:06 by vasaant