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public:meetings:glowbi2008:tutorial_wednesday [2010-11-16 20:40] – James M Anderson | public:meetings:glowbi2008:tutorial_wednesday [2017-03-08 15:27] (current) – external edit 127.0.0.1 | ||
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===== Web Image of 3C129 ===== | ===== Web Image of 3C129 ===== | ||
- | {{http://rsd-www.nrl.navy.mil/ | + | {{https:// |
Wide-field 90 cm image of the large head-tail radio galaxy 3C129 (right). The bright source at the left is 3C129.1. From Lane et al., AJ, 123, 2985, 2002. | Wide-field 90 cm image of the large head-tail radio galaxy 3C129 (right). The bright source at the left is 3C129.1. From Lane et al., AJ, 123, 2985, 2002. | ||
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task ' | task ' | ||
default\\ | default\\ | ||
- | getn 13\\ | + | getn 16\\ |
calsour ' | calsour ' | ||
uvrange 0\\ | uvrange 0\\ | ||
antenna 0\\ | antenna 0\\ | ||
- | refant | + | refant |
minamper 10\\ | minamper 10\\ | ||
minphser 10\\ | minphser 10\\ | ||
weightit 1\\ | weightit 1\\ | ||
- | get2n 6\\ | + | get2n 10\\ |
ncomp 0\\ | ncomp 0\\ | ||
solmode ' | solmode ' | ||
aparm(6) 2\\ | aparm(6) 2\\ | ||
- | solint | + | solint |
solsub 2\\ | solsub 2\\ | ||
cparm(3) 10\\ | cparm(3) 10\\ | ||
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clrmsg\\ | clrmsg\\ | ||
'' | '' | ||
+ | |||
+ | ==== Calibrate 3C48 ==== | ||
+ | |||
+ | '' | ||
+ | get2n 11\\ | ||
+ | calsour ' | ||
+ | solint 1\\ | ||
+ | uvrange 0\\ | ||
+ | go\\ | ||
+ | clrmsg\\ | ||
+ | '' | ||
+ | |||
==== Calibrate the phase calibrator ==== | ==== Calibrate the phase calibrator ==== | ||
+ | |||
+ | In this step we will try to get an amplitude calibration of the phase calibrator. | ||
+ | |||
'' | '' | ||
clr2n\\ | clr2n\\ | ||
calsour ' | calsour ' | ||
- | solint | + | solint |
uvrange 0\\ | uvrange 0\\ | ||
+ | timer 101 0 0 0 101 8 0 0\\ | ||
go\\ | go\\ | ||
clrmsg\\ | clrmsg\\ | ||
'' | '' | ||
+ | |||
==== Check the results ==== | ==== Check the results ==== | ||
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go\\ | go\\ | ||
inver 2\\ | inver 2\\ | ||
+ | optype ' | ||
+ | go\\ | ||
+ | optype ' | ||
+ | go\\ | ||
+ | inver 3\\ | ||
optype ' | optype ' | ||
go\\ | go\\ | ||
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task ' | task ' | ||
sources ' | sources ' | ||
- | calsour ' | + | calsour ' |
calcode ' '\\ | calcode ' '\\ | ||
bif 0\\ | bif 0\\ | ||
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< | < | ||
- | vlb054> GETJY1: Task GETJY (release of 31DEC08) begins\\ | + | vlb054> GETJY1: Task GETJY (release of 31DEC10) begins |
+ | vlb054> GETJY1: Calibrator robust averaging used 818 of 818 gain samples | ||
vlb054> GETJY1: | vlb054> GETJY1: | ||
- | vlb054> GETJY1: 0420+417 | + | vlb054> GETJY1: 0420+417 |
- | vlb054> GETJY1: | + | vlb054> GETJY1: |
+ | vlb054> GETJY1: | ||
+ | vlb054> GETJY1: 0420+417 | ||
vlb054> GETJY1: Appears to have ended successfully | vlb054> GETJY1: Appears to have ended successfully | ||
- | vlb054> GETJY1: vlb054 | + | vlb054> GETJY1: vlb054 |
</ | </ | ||
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==== Redo the phase calibrator calibration ==== | ==== Redo the phase calibrator calibration ==== | ||
- | Now that we know the flux density of the phase calibrator, run through its calibration again, just to be sure AIPS doesn' | + | Now that we know the flux density of the phase calibrator, run through its calibration again, just to be sure AIPS doesn' |
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'' | '' | ||
inext ' | inext ' | ||
- | inver 2\\ | + | inver 3\\ |
extdest\\ | extdest\\ | ||
inver 0\\ | inver 0\\ | ||
tget calib\\ | tget calib\\ | ||
+ | timer 0\\ | ||
go\\ | go\\ | ||
clrmsg\\ | clrmsg\\ | ||
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'' | '' | ||
task ' | task ' | ||
- | sources ' | + | sources ' |
- | calsour ' | + | calsour ' |
opcode ' | opcode ' | ||
gainver 1\\ | gainver 1\\ | ||
gainuse 2\\ | gainuse 2\\ | ||
- | refant | + | refant |
interp ' | interp ' | ||
doblank 1\\ | doblank 1\\ | ||
go\\ | go\\ | ||
'' | '' | ||
+ | |||
===== Check the results ===== | ===== Check the results ===== | ||
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task ' | task ' | ||
clro\\ | clro\\ | ||
+ | outdi 1\\ | ||
go\\ | go\\ | ||
'' | '' | ||
+ | |||
==== Run the polarization calibration on the phase calibrator ==== | ==== Run the polarization calibration on the phase calibrator ==== | ||
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timer 0\\ | timer 0\\ | ||
antenna 0\\ | antenna 0\\ | ||
- | uvrange 0\\ | + | uvrange |
bif 0\\ | bif 0\\ | ||
eif 0\\ | eif 0\\ | ||
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soltype ' | soltype ' | ||
prtlev 1\\ | prtlev 1\\ | ||
- | refant | + | refant |
bparm 0\\ | bparm 0\\ | ||
cparm 0\\ | cparm 0\\ | ||
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< | < | ||
- | vlb054> PCAL 1: Calibration source | + | vlb054> PCAL 1: Calibration source |
- | vlb054> PCAL 1: | + | vlb054> PCAL 1: |
- | vlb054> PCAL 1: Pol. inten. = 0.04727 +/- 0.000386 | + | vlb054> PCAL 1: Pol. inten. = 0.08905 +/- 0.000758 |
- | vlb054> | + | vlb054> PCAL 1: |
- | vlb054> PCAL 1: 0420+417 | + | vlb054> PCAL 1: 0420+417 |
- | vlb054> | + | vlb054> PCAL 1: Calibration source |
- | vlb054> PCAL 1: Calibration source | + | vlb054> PCAL 1: |
- | vlb054> PCAL 1: | + | vlb054> PCAL 1: Pol. inten. = 0.09068 +/- 0.000988 |
- | vlb054> PCAL 1: Pol. inten. = 0.04385 +/- 0.000392 | + | vlb054> PCAL 1: |
- | vlb054> | + | vlb054> PCAL 1: 0420+417 |
- | vlb054> PCAL 1: 0420+417 | + | |
- | vlb054> | + | |
</ | </ | ||
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timer 0\\ | timer 0\\ | ||
antenna 0\\ | antenna 0\\ | ||
- | uvrange 0,45\\ | + | uvrange 0\\ |
docalib 1\\ | docalib 1\\ | ||
gainuse 2\\ | gainuse 2\\ | ||
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AIPS 1: Adverbs | AIPS 1: Adverbs | ||
AIPS 1: ---------------------------------------------------------------- | AIPS 1: ---------------------------------------------------------------- | ||
- | AIPS 1: CLCORPRM | + | AIPS 1: CLCORPRM |
AIPS 1: *rest 0 | AIPS 1: *rest 0 | ||
</ | </ | ||
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task ' | task ' | ||
clro\\ | clro\\ | ||
+ | outdi 1\\ | ||
go\\ | go\\ | ||
'' | '' | ||
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http:// | http:// | ||
- | Correct number is -21.71 | + | Correct number is -22.98 |
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'' | '' | ||
- | for i=1 to 2;clcorp(i) = -21.71 - clcorp(i); | + | for i=1 to 2;clcorp(i) = -22.98 - clcorp(i); |
'' | '' | ||
+ | |||
==== Apply the corrections ==== | ==== Apply the corrections ==== | ||
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timer 0\\ | timer 0\\ | ||
antenna 0\\ | antenna 0\\ | ||
- | uvrange 0,45\\ | + | uvrange 0\\ |
docalib 1\\ | docalib 1\\ | ||
gainuse 3\\ | gainuse 3\\ | ||
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########################## | ########################## | ||
+ | |||
===== Work on just the target data now ===== | ===== Work on just the target data now ===== | ||
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'' | '' | ||
task ' | task ' | ||
- | getn 4\\ | + | getn 12\\ |
- | source ' | + | source |
timer 0\\ | timer 0\\ | ||
bif 0\\ | bif 0\\ | ||
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aparm 0\\ | aparm 0\\ | ||
go\\ | go\\ | ||
- | getn 13\\ | + | getn 16\\ |
go\\ | go\\ | ||
clrmsg\\ | clrmsg\\ | ||
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'' | '' | ||
task ' | task ' | ||
- | getn 16\\ | + | getn 20\\ |
- | get2n 17\\ | + | get2n 26\\ |
go\\ | go\\ | ||
pcat\\ | pcat\\ | ||
Line 1978: | Line 2008: | ||
< | < | ||
- | AIPS 1: 18 101 3C129 | + | AIPS 1: 27 100 3C129 |
</ | </ | ||
+ | |||
===== Imaging ===== | ===== Imaging ===== | ||
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'' | '' | ||
task ' | task ' | ||
- | getn 18\\ | + | default\\ |
+ | getn 27\\ | ||
stokes ' | stokes ' | ||
dopol 0\\ | dopol 0\\ | ||
- | cellsize 0.25,0.25\\ | + | cellsize 0.15,0.15\\ |
imsize 2048,2048\\ | imsize 2048,2048\\ | ||
clr2n\\ | clr2n\\ | ||
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niter 20000\\ | niter 20000\\ | ||
overlap 1\\ | overlap 1\\ | ||
+ | dotv 1\\ | ||
go\\ | go\\ | ||
clrmsg\\ | clrmsg\\ | ||
Line 2013: | Line 2046: | ||
clrmsg\\ | clrmsg\\ | ||
'' | '' | ||
+ | |||
+ | |||
==== Check where the files went ==== | ==== Check where the files went ==== |