| VS04K1 Results
Submitted checklist.txt and checklist.tex is also available |
[Summary | AIPS | Difmap ] |
| Observation code | : | VS04K1 | AIPS Version | : | 31DEC00 |
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| Date of Observation | : | 2002/104 | Difmap Version | : | 2.4a | |||
| Source Name | : | J0750+1231 | vsop_difmap used | : | No | |||
| Calibration Source(s) | : | J0530+13, J0811+01 | ||||||
| Ground telescopes | : | CD KA HO MP | Model Fitted to data | : | Yes | |||
| Tracking Station(s) | : | UZ | Image made | : | Yes | |||
| Correlator | : | Mitaka |
| Abstract
VS04K1 & K2 files. K2 = 08:48 to 08:58 last 10 mins. No info for Kashima. Ceduna is flagged out in the data files, and the logs mention that the maser might be locked. The source fitted matches the pre-launch and the 2cm survey. |
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| FITLD | douvcomp = 1 clint = 0.25 digicor = -1 delcorr = -1 |
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| DBCON | DOARRAY 1 ; DOPOS 1 1 |
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| MSORT | SORT 'TB' |
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| INDXR | cparm = 0, 0, 0.25; infile 'indxr.txt' |
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| ANTAB | infile='antab.txt' |
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no kashima data |
| APCAL |
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| ACCOR | solint 5 |
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| CLCAL | refant=1; |
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Amplitude calibration solutions applied. Mopra as ref |
| CLCAL | refant=1; |
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Amplitude calibration solutions applied. Mopra as ref |
| TACOP |
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Copy CL tables | |
| CLCOR | opcode 'gain';antenna 0;clcorprm 1.13 opcode 'SBDL';antenna 5 0;clcorprm -150,-150,0 |
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Known delay offsets from DQA report applied before fringe-fitting. |
| FRING | docalib = 1; dparm 1,400,400,0.5,0;aparm(7)=0.1;solint 5,10 |
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| SNSMO | cparm 0 0 0.5 0.5 0 0 0 20 20 0;interpol 'mwf';doblank 1 smoty 'vlbi' |
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attempting to flag extreme points. Seems to work. But now finding the phase on a seperate calibration pass. |
| CLCAL | interpol 'ambg';intpar 0 |
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Not a very good solution - clear signal loss. |
| CLCAL | interpol 'poly';intpar 4 0 |
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discernable phases, but wrapping on ~3 minutes, particularly around 05-06 UT. |
| FRING | docalib = 1; dparm 1,30,30,3,0;aparm(7)=0.1;solint 10 |
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| SNSMO | cparm 0 0 0.5 0.5 0 0 0 5 5 0;interpol 'mwf';doblank 1 bparm 0; smoty 'vlbi' |
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Flag extreme points. Seems to work. |
| CLCAL/SNEDT/CLCAL | interpol 'ambg'/'cube';intpar 0 |
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| CLCOR | opcode 'gain';antenna 0;clcorprm 1/sqrt(1.13) 0 |
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Correction correction |
| FRING | dparm 1,0,0,0.5,0;aparm(7)=0.1;solint 5;flagv -1 |
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No ceduna because of flagging. Ceduna has no maser. |
| CLCAL/SNEDT/CLCAL | opc 'calp';interpol 'poly'/'cube';intpar 4 |
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rebuild the cal tables without dropping Ceduna. |
| SPLIT | aparm(1)=2 0; |
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Av within IF |
| FITTP |
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Data written out for analysis in Difmap |
AIPS Input Files
| ANTAB.TXT | Comments no Kashma Tsys - nominal used. Two correlator files. |
AIPS Output Files
| 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
J0811+01 flux is 0.6 Jy, PLS was 1.3. J0530+13 flux was down alot from PLS. Selfcalled on 1 min time scale as the fringe fit was poor. Model fitted matches the 2cm structure, and the pre-launch. Flux is down c.f. pre-launch. |
| Image | ||||
| Ampl, Phase vs (u,v) Distance PS (68 kb) JPEG (48 kb) |
Ampl, Phase vs Time PS (167 kb) JPEG 1, 2 |
(u,v) Coverage PS (33 kb) JPEG (30 kb) | Closure Phase vs Time PS (119 kb) JPEG 1 |
Clean Image PS (34 kb) JPEG (45 kb) |
| Modelfit | ||||
| Ampl, Phase vs (u,v) Distance PS (41 kb) JPEG (46 kb) |
Ampl, Phase vs Time PS (149 kb) JPEG 1, 2 |
(u,v) Coverage PS (33 kb) JPEG (30 kb) | Closure Phase vs Time PS (110 kb) JPEG 1 |
Image with model components PS (825 bytes) JPEG (0 bytes) |
More details on the Images and Modelfits are found in this page.
