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: http://www.atnf.csiro.au/computing/software/miriad/userguide/node75.html
Дата изменения: Unknown Дата индексирования: Mon Apr 11 01:50:32 2016 Кодировка: Поисковые слова: hst |
The following example changes the RA phase centre by 10 seconds of time and also corrects a delay error of -3 ns on antenna 2 (by adding a phase gradient across the band). uvedit has the option to turn off the recomputation of u and v which might otherwise be done (options=nouv). This can be useful for say, entering a delay change (which does not need u and v to be recomputed) because Miriad does not compute u and v as accurately as the on-line ephemeris routines.
UVEDIT | |
vis=multi.uv | Input visibility dataset |
source=0823-500 | Specify source; unset means all |
antpos | No change to antenna coordinates |
dantpos | |
ra=10 | Move RA phase centre |
dec | No change to DEC |
time | No clock offset |
delay=0,-3,0,0,0,0 | Delay error on antenna 2 |
out=multi_corr.uv | Output visibility dataset |
options | Do the works |
The task uvredo also `edits' a visibility dataset. Unlike uvedit, however, it only modifies ancillary data in the dataset that are derived from other information. For example, it can recompute the sky feed angle (``chi'') and velocity information.
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