Summary
 

Observation code	:	VS02d		AIPS Version	:	15OCT98
Date of Observation	:	1998/57		Difmap Version	:	2.3c
Source Name	:	J1556-79		vsop_difmap used	:	Yes
Calibration Source(s)	:	1921-293
Ground telescopes	:	HartRAO, Hobart, Mop		Model Fitted to data	:	No
Tracking Station(s)	:	TZ,GZ		Image made	:	No
Correlator	:	Penticton

 

Abstract This was scheduled as a 4 GRTs experiment. But Ceduna didn't observe and, Mop observed but data deemed to be no good at site and was not shipped. As a results, only 2 GRTs available. No fringes were detected to Halca during both TZ and GZ passes, consistent with the DQA report. So, only on 1 ground baseline (HartRAO -- Hobart) was survey source (J1556-79) detected. The source had a correlated flux density on a 9,000km baseline of ~0.1Jy during the early 2.5 hrs until 01/00:40 when it increased to ~0.5Jy at 01/02:00 and then decreased again. Very interesting but difficult to understand. AT light-curve shows no variation. I append uvplot, radplot and vplot below. A re-scheduling is strongly recommended for this southern radio source! For the calibrator 1921-293, it has a correlated flux density of 3 Jy on the ground baseline of 9,000km.

AIPS Input Files

INDXR.TXT ANTAB.TXT

Comments - None -

Additional Files

Name	Description
uvplot, radplot, vplot	three plots from Difmap for J1556-79 (see above Abstract)

AIPS Output Files

PRTAN.LIS LISTR.LIS DTSUM_0.LIS DTSUM_1.LIS UVPLT_UV.PS UVPLT_UVD.PS UVPLT_UVPA.PS SN_APCAL_AMP_2.PS SN_APCAL_AMP_1.PS SN_FRING01_DEL_1.PS

SN_FRING01_DEL_2.PS SN_FRING01_RAT_1.PS SN_FRING01_RAT_2.PS SN_FRING01_SNR_1.PS SN_FRING01_SNR_2.PS SN_CALIB_DEL_1.PS SN_CALIB_DEL_2.PS SN_CALIB_RAT_1.PS SN_CALIB_RAT_2.PS SN_CALIB_SNR_1.PS

SN_CALIB_SNR_2.PS SN_CALIB_PHA_1.PS SN_CALIB_PHA_2.PS POSSM01_AP_1.PS POSSM01_AP_2.PS VPLOT_AP_1.PS VPLOT_AP_2.PS