| vs09z Results
Submitted checklist.txt and checklist.tex is also available |
[Summary | AIPS | Difmap ] |
| Observation code | : | vs09z | AIPS Version | : | 31dec02 |
|
||
| Date of Observation | : | 2000/300 | Difmap Version | : | 2.3c | |||
| Source Name | : | J0854+57 | vsop_difmap used | : | Yes | |||
| Calibration Source(s) | : | J1800+78, J0217+73 | ||||||
| Ground telescopes | : | Nt Sc Hn Nl Br Mk | Model Fitted to data | : | Yes | |||
| Tracking Station(s) | : | RZ NZ | Image made | : | Yes | |||
| Correlator | : | Socorro |
| Abstract
Extraction from w312a. Fringe-fit the data (for all except NT) in AIPS, determined amp. corrections for GRTs from analysis of two calibration sources in difmap, and applied these with CLCOR. Used 4 hours (10UT to 14UT) and 4 GRTs (BR,HN,MK,NL) for the survey extraction. Imaged J0854+57 in difmap and modelfit with three circular gaussians. Structure consistent with PLS. Core component is 0.6Jy in 0.25mas. |
|
|
|
in |
in |
out |
out |
|
| FITLD |
|
|
|
|
run 9 times to read 9 files from disk | |
| MSORT |
|
|
|
|
||
| INDXR |
|
|
|
|
||
| ACCOR | solint 5 |
|
|
|
|
|
| PRTAN |
|
|
|
|
||
| LISTR | optype = 'SCAN' |
|
|
|
|
|
| MERGECAL |
|
|
|
|
||
| ANTAB | infile w312aHALCA.cal |
|
|
|
|
|
| APCAL |
|
|
|
|
||
| CLCAL |
|
|
|
|
||
| CLCAL |
|
|
|
|
||
| FRING |
|
|
|
|
||
| CLCAL |
|
|
|
|
||
| SPLIT |
|
|
|
|
||
| FITTP |
|
|
|
|
||
| TACOP |
|
|
|
|
for safety | |
| CLCOR | optype='gain' antenn=1,0 bif=1 eif=1 clcorprm=0.94,0 antenn=1,0 bif=2 eif=2 clcorprm=0.975,0 antenn=2,0 bif=1 eif=1 clcorprm=1.03,0 antenn=2,0 bif=2 eif=2 clcorprm=1.04,0 antenn=3,0 bif=1 eif=1 clcorprm=1.07,0 antenn=3,0 bif=2 eif=2 clcorprm=1.12,0 antenn=4,0 bif=1 eif=1 clcorprm=0.92,0 antenn=4,0 bif=2 eif=2 clcorprm=1.08,0 antenn=6,0 bif=1 eif=1 clcorprm=0.93,0 |
|
|
|
|
Global amp. corrections derived from analysis of the two calibration sources in difmap and applied to the data. Results for the two sources very consistent. |
| SPLIT |
|
|
|
|
||
| FITTP |
|
|
|
|
AIPS Input Files
| ANTAB.TXT | Comments - None - |
AIPS Output Files
| DTSUM_0.LIS PRTAN.LIS LISTR.LIS UVPLT_UV.PS |
SN_ACCOR_1.PS SN_APCAL_1.PS SN_CALIB_DEL_1.PS SN_CALIB_RAT_1.PS |
SN_CALIB_SNR_1.PS VPLOT_AP_1.PS POSSM_AP_1.PS |
| Phase selfcal applied? | Yes |
| Global amplitude selfcal (gscal) applied? | No |
| Amplitude selfcal on non-global timescales used? | No |
| Modelfit made and saved? | Yes |
| Image Made and saved? | Yes |
| Comments on Difmap processing
Used a GOT extraction of 4 hours (10UT to 14UT) and 4 GRTs (BR, HN, MK, NL). HALCA weight set to 50. Didn' use gscale as had corrected relative GRT gains with CLCOR. Ended up flagging some HALCA data towards end of tracking pass as amps and phases not consistent. Three circular gaussians fited to the data. Core is 0.6 Jy in 0.25mas radius component. Estimated error of +/-0.05mas on this size as larger errors do not fit HALCA data well in radplot. |
| Image | ||||
| Ampl, Phase vs (u,v) Distance PS (80 kb) JPEG (46 kb) |
Ampl, Phase vs Time PS (352 kb) JPEG 1, 2, 3, 4 |
(u,v) Coverage PS (42 kb) JPEG (31 kb) | Closure Phase vs Time PS (503 kb) JPEG 1, 2, 3, 4 |
Clean Image PS (48 kb) JPEG (46 kb) |
| Modelfit | ||||
| Ampl, Phase vs (u,v) Distance PS (80 kb) JPEG (45 kb) |
Ampl, Phase vs Time PS (353 kb) JPEG 1, 2, 3, 4 |
(u,v) Coverage PS (42 kb) JPEG (31 kb) | Closure Phase vs Time PS (501 kb) JPEG 1, 2, 3, 4 |
Image with model components PS (45 kb) JPEG (41 kb) |
More details on the Images and Modelfits are found in this page.
