| vs04y Results
Submitted checklist.txt and checklist.tex is also available |
[Summary | AIPS | Difmap ] |
| Observation code | : | vs04y | AIPS Version | : | 31DEC03 |
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| Date of Observation | : | 1998/213 | Difmap Version | : | 2.4 | |||
| Source Name | : | J1602+3326 | vsop_difmap used | : | Yes | |||
| Calibration Source(s) | : | 1611+343 | ||||||
| Ground telescopes | : | AR, GB, HH | Model Fitted to data | : | Yes | |||
| Tracking Station(s) | : | TZ, RZ | Image made | : | Yes | |||
| Correlator | : | Penticton |
| Abstract
Some fringes were found on all space-ground baselines. The source is resolved, as well as in the pre-launch survey. Elliptical Gaussian model was fitted to the core with ~0.7 Jy. |
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| FITLD |
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| MSORT |
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uv file received was already sorted in TB order | |
| FIXWT | bif = 2 bchan = 100 xinc = 10 detime = -1 |
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| INDXR | cparm = 0, 0, 0.5, 0 |
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Input scan break taken from PI letter. |
| TABED | inext = 'an' inver = 1 outver = 1 optyp = 'repl' aparm = 5, 0, 0, 6, 0 bcount = 3 ecount = 3 keyvalue = 0 |
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fix incorrect antenna type (MNTSTA: altaz ->0) in column 5, row 3 of AN table for Hartrao |
| TABED | same as above, except: bcount = 4 ecount = 4 keyvalue = 2, 0 |
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fix incorrect antenna type (MNTSTA: orbiter->2) in column 5, row 4 of AN table for VSOP_SC |
| ANTAB |
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some gain curve information from VSOP calibration web page. Nominal Tsys used for VSOP_SC. Slight difference between HALCA IF1 and IF2 (96 & 102 K) based on earlier experience. GTRs: measured tsys for HARTRAO and NRAO_140, nominal values for ARECIBO. | |
| APCAL |
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| CLCAL | opcode = 'cali' interpol = '2pt' refant = 2 |
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Amplitude calibration solutions applied, refant NRAO_140. |
| TACOP |
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| CLCOR | opcode = 'SBDL' antenn = 1,0 gainver = 3 clcorprm = 500,500,0 |
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Delays from DQA1 plots for Arecibo |
| CLCOR | opcode = 'SBDL' antenn = 3,0 gainver = 3 clcorprm = 220,220,0 |
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Delays from DQA1 plots for HART |
| CLCOR | opcode = 'SBDL' antenn = 4,0 gainver = 3 clcorprm = 530,530,0 |
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Delays from DQA1 plots for VSOP_SC |
| FRING | docalib = 2 flagver = -1 refant = 2 search = 1, 3 solint = 10 aparm = 2, 0, 0, 0, 2, 1, 3, 0, 1, 0 dparm = 1, 200, 300, 0 |
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| CLCAL | opcode = 'cali' interpol = 'ambg' |
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Fringe-fit solution applied. |
| TACOP |
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| CLCOR | opcode = 'gain' antenna = 0 clcorprm = 0.906, 0 |
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Gain correction for Penticton data correlated before 14 Feb 1999, (Oct 1998). |
| CLCOR | opcode = 'gain' antenna = 1, 0 clcorprm = 2.2, 0 |
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Arecibo gain correction after investigating data in Difmap, based on comparison with other space baseline data of similar projected length. (No uv-crossing points were available) |
| SPLIT | aparm = 2, 0.7273, 0, 1, 0 docalib 2 flagver -1 |
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Create single-source file, IFs not averaged, aparm(2) from DTSUM |
| FITTP |
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Data written out for analysis in Difmap. |
AIPS Input Files
| ANTAB.TXT INDXR.TXT |
Comments Measured Tsys for GB and HH, nominal values for HALCA and AR. |
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 (98 kb) JPEG 1, 2 |
(u,v) Coverage PS (12 kb) JPEG (26 kb) | Closure Phase vs Time PS (65 kb) JPEG 1 |
Clean Image PS (30 kb) JPEG (78 kb) |
| Modelfit | ||||
| Ampl, Phase vs (u,v) Distance PS (18 kb) JPEG (37 kb) |
Ampl, Phase vs Time PS (93 kb) JPEG 1, 2 |
(u,v) Coverage PS (12 kb) JPEG (26 kb) | Closure Phase vs Time PS (64 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.
