Summary
 

Observation code	:	VS07g		AIPS Version	:	15OCT98
Date of Observation	:	1998/64		Difmap Version	:	2.3c
Source Name	:	J1658+07		vsop_difmap used	:	Yes
Calibration Source(s)	:	1622-253, 1308+326
Ground telescopes	:	Hobart, Mop, Noto, Seshan25, HartRAO, Kashima		Model Fitted to data	:	Yes
Tracking Station(s)	:	GZ, NZ, TZ		Image made	:	Yes
Correlator	:	Penticton

 

Abstract Strong fringes were easily detected on ground-ground baselines except those to Kashima. Only small part of Kashima data was used for imaging. Hobart gains were multiplied by a factor of ~0.6 to match the adopted DPFU of 0.1 and the measured Tsys of ~300K. There were delay gaps when the tracking stations changed each time. For ground-space baselines, good fringes were found up to ~22:30 (UT) which included part of the TZ pass and an entire GZ pass. For NZ pass from 22:33 (UT) to 22:50 (UT), only some very weak fringes were detected (consistent with the correlator report) and these data were eventually flagged. Both imaging and modelfitting were made to the survey source J1658+07. A single elliptical Gaussian model was applied to fit the calibrator 1622-253.

Model
Flux (Jy)	Radius (mas)	Theta (deg)	Major (mas)	Axial ratio	Phi (deg)	TB (10^12 K)
0.192106	0.476937	161.513	0.240012	1.00000	0.00000	0.1627
0.565386	0.0703411	-13.1128	0.259270	1.00000	0.00000	0.4105
0.128979	7.59588	-44.4885	0.666005	1.00000	0.00000	0.0142
(*) Quoted Brightness temperatures assume Gaussian components and are in the local (z=0) frame.

AIPS Input Files

INDXR.TXT ANTAB.TXT

Comments - None -

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_FRING2_DEL_1.PS SN_FRING2_DEL_2.PS SN_FRING2_RAT_1.PS SN_FRING2_RAT_2.PS SN_FRING2_SNR_1.PS SN_FRING2_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

More details on the Images and Modelfits are found in this page.