Summary
 

Observation code	:	vs03o		AIPS Version	:	15APR99
Date of Observation	:	1998/181		Difmap Version	:	2.3c
Source Name	:	1404+286		vsop_difmap used	:	Yes
Calibration Source(s)	:
Ground telescopes	:	EB,HN,SC		Model Fitted to data	:	Yes
Tracking Station(s)	:	TZ		Image made	:	Yes
Correlator	:	Socorro

 

Abstract This survey dataset is an extraction of the GOT experiment v085q. The extraction was received on tape from Socorro containing data from the EB, HN, NL, and SC GRTs plus HALCA, over a 3 hour time range. The NL data was flagged before imaging in Difmap. In order to find weak HALCA fringes, the ground telescopes were fringed first. These solutions were applied and the resulting data was averaged in frequency and time using SPLAT. Because of this, the GRTs in the final fringe plots have zero delays and rates, and there are two TASAV files: the final version and the tables as they were before SPLAT was applied. Suggested parameters for all AIPS tasks were used. CALIB was not run so the final SN and CL tables have non-zero phases in them. Imaging this source was difficult with only 3 GRTs. Fringes were found to HALCA over only ~1/2 of the 3 hour time range. While an image with all 4 GRTs recovers the source structure, flagging any of the remaining GRTs significantly worsens the image.

Model
Flux (Jy)	Radius (mas)	Theta (deg)	Major (mas)	Axial ratio	Phi (deg)	TB (10^12 K)
1.12331	0.0281592	11.1529	0.763428	0.523847	-19.7416	0.1795
0.0531209	0.308445	-127.979	0	0	0	0.0000
(*) Quoted Brightness temperatures assume Gaussian components and are in the local (z=0) frame.

AIPS Input Files

UVFLG.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_ACCOR_AMP_1.PS SN_ACCOR_AMP_2.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_PHA_1.PS SN_CALIB_PHA_2.PS SN_CALIB_RAT_1.PS SN_CALIB_RAT_2.PS SN_CALIB_SNR_1.PS

SN_CALIB_SNR_2.PS SN_FRING02_DEL_1.PS SN_FRING02_DEL_2.PS SN_FRING02_RAT_1.PS SN_FRING02_RAT_2.PS SN_FRING02_SNR_1.PS SN_FRING02_SNR_2.PS VPLOT_AP_1.PS VPLOT_AP_2.PS POSSM01_AP_1.PS POSSM01_AP_2.PS

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