Changes between Version 1 and Version 2 of Instructions
- Timestamp:
- 10/30/09 10:06:22 (15 years ago)
Legend:
- Unmodified
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Instructions
v1 v2 26 26 # -rw-r--r-- 1 mcc381 atculg 646 Feb 2 11:06 freqtab.dat 27 27 }}} 28 The original rpfits file is maintained so you will have two copies of the data. 28 29 29 30 1. Perform the bandpass calibration … … 35 36 1. Load the rpfits file 36 37 {{{ 37 pload 3c138.rpf38 pload 2006-11-20_1401_3c138_Cal_DEC.rpf 38 39 }}} 39 40 1. Copy the bandpass tables 40 41 {{{ 41 gcopy 3c138193442 gcopy 2006-11-20_1401_3c138_Cal_DEC 1934 42 43 }}} 43 44 1. Extract the phase vs parallactic angle information from scans of the polarised calibrator 44 45 {{{ 45 polcalr 3c13846 polcalr 2006-11-20_1401_3c138_Cal_DEC 46 47 }}} 47 48 1. Determine polarisation parameters (leakages and phase difference between the signals from the two polarization channels) of the system from the phase data 48 49 {{{ 49 psolve 3c13850 psolve 2006-11-20_1401_3c138_Cal_DEC 3c138 /xs 50 51 }}} 51 52 To get a consistent pair of output files, the procedure needs to be executed twice. An example follows. 52 53 53 54 {{{ 54 polcalr 3c13855 psolve 3c138 /xs56 polcalr 3c13857 psolve 3c138 /xs55 polcalr 2006-11-20_1401_3c138_Cal_DEC 3c138 56 psolve 2006-11-20_1401_3c138_Cal_DEC 3c138 3c138 /xs 57 polcalr 2006-11-20_1401_3c138_Cal_DEC 3c138 58 psolve 2006-11-20_1401_3c138_Cal_DEC 3c138 3c138 /xs 58 59 59 60 }}}