| VS08p Results
Submitted checklist.txt and checklist.tex is also available |
[Summary | AIPS | Difmap ] |
| Observation code | : | VS08p | AIPS Version | : | 31DEC01 |
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| Date of Observation | : | 2001/203 | Difmap Version | : | 2.3c | |||
| Source Name | : | J0121+11 | vsop_difmap used | : | Yes | |||
| Calibration Source(s) | : | J0204+15 | ||||||
| Ground telescopes | : | KALYAZIN, SESHAN25 | Model Fitted to data | : | Yes | |||
| Tracking Station(s) | : | USUDA, ROBLEDO | Image made | : | Yes | |||
| Correlator | : | Penticton |
| Abstract
This is a-2 GRTs experiment. The first 6 hours of observation were not analysed since there had been only two observing telescopes. Nominal gain values were used for all antennas (See ANTAB.TXT). Kalyazin amplitudes have been scaled up by 2 based on previous data reduction experience and comparison with USNO VLBA observations. The amplitudes investigated by PROJPLOT indicated a well resolved N-S structure. Our image is in agreement with this, as well as the pre-launch survey at 5 GHz, and also with what is known from some X-band USNO VLBA observations (2002JAN16). |
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| FITLD |
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Version 'old' (=31DEC99) was used (for this task only) | |
| FIXWT | bif 1, bchan 100 detime -1; doucomp 1 |
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| MSORT | sort 'TB' |
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Note that "flagver -1" was used in each task below this point, otherwise most of Kalyazin data would have been lost. |
| INDXR | infile 'INDXR.TXT' cparm 0, 0, 1, 0 |
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| TABED | inext 'an', optype 'repl' inver 1, outver 1 aparm 5, 0, 0, 6, 0 bcount 2, ecount 2 keyval 2, 0 |
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Change incorrect mounting type for VS0P_SC |
| ANTAB | infile 'ANTAB.TXT' tyver 1; gcver 1 |
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| APCAL | tyver 1; gcver 1 aparm 0 |
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| CLCAL | opcode 'cali'; interpol '2pt' |
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| FRING | docal 1, refant 1, flagver -1 timer 0, 23, 56, 0, 0, 23, 59, 0 dparm 3,100,100,0.7 aparm 2,0,0,0,0,1,3,0,1 |
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Manual phasecal for the first timerange. |
| FRING | docal 1, refant 1, flagver -1 timer 1, 1, 30, 0, 1, 1, 33, 0 dparm 3,100,100,0.7 aparm 2,0,0,0,0,1,3,0,1 |
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Manual phasecal for the second timerange. |
| SNCOR | opcode 'zrat', timer 0 |
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| SNCOR | opcode 'zrat', timer 0 |
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| CLCAL | opcode 'calp', interpol '2pt' refant 1 timer 0 23 09 48 1 1 0 0 |
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| CLCAL | opcode 'calp', interpol '2pt' refant 1 timer 1 1 0 0.1 1 2 0 5 |
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| FRING | timer 0; flagver -1 dparm 3, 300, 300, 0.7 aparm 2, 0, 0, 0, 2, 1, 3, 0, 1 refant 1 |
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| CLCAL | opcode 'cali', interpol '2pt' timer 0 23 09 48 1 02 00 05 refant 1 |
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timer 0 16 59 55 0 23 09 48 was flagged not fringe and only 2 telescopes in that timerange. |
| TACOP |
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| CLCOR | opcode 'gain'; clcorprm 2.0, 0 antenna 1, 0 |
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Scale up Kalyazin amplitudes by a factor of 2. |
| SPLIT | source 'J0121+11', docalib 1 aparm 3 0.7 0 1, flagver -1 |
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| SPLIT | source 'J0204+15', docalib 1 aparm 3 0.7 0 1, flagver -1 |
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AIPS Input Files
| INDXR.TXT ANTAB.TXT |
Comments - None - |
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
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| Image | ||||
| Ampl, Phase vs (u,v) Distance PS (21 kb) JPEG (38 kb) |
Ampl, Phase vs Time PS (81 kb) JPEG 1, 2 |
(u,v) Coverage PS (14 kb) JPEG (29 kb) | Closure Phase vs Time PS (50 kb) JPEG 1 |
Clean Image PS (33 kb) JPEG (43 kb) |
| Modelfit | ||||
| Ampl, Phase vs (u,v) Distance PS (21 kb) JPEG (39 kb) |
Ampl, Phase vs Time PS (81 kb) JPEG 1, 2 |
(u,v) Coverage PS (14 kb) JPEG (29 kb) | Closure Phase vs Time PS (49 kb) JPEG 1 |
Image with model components PS (35 kb) JPEG (40 kb) |
More details on the Images and Modelfits are found in this page.
