Changes between Version 25 and Version 26 of Notes/ExampleReduction

Timestamp:

04/01/09 13:30:49 (15 years ago)

Author:

JamieStevens

Comment:

--

Notes/ExampleReduction

@@ -348 +348 @@
 need to make the beam 3 times the size of the area being cleaned, instead of using options=double which simply doubles
 the beam size compared to the image. To do this we need to make the image 3 times bigger than the primary beam and then
-cut the central part of the image out using imframe. Since the parameters we need to do this will be different for each
+specify the normal imaging region during mfclean. Since the parameters we need to do this will be different for each
 central frequency, we will control dac_repeat.pl with a parameter file.
 
@@ -381 +381 @@
 
 {{{
-4540 cell=26.672,22.525 imsize=255,302
-4668 cell=25.265,21.494 imsize=262,308
-4796 cell=24.635,20.907 imsize=261,308
-4924 cell=23.992,20.378 imsize=261,308
-5052 cell=23.463,19.901 imsize=260,307
-5180 cell=22.910,19.483 imsize=260,306
-5308 cell=22.394,19.020 imsize=260,306
-5436 cell=21.931,18.553 imsize=259,306
-5564 cell=21.531,18.208 imsize=258,305
-5692 cell=21.018,17.827 imsize=258,304
-5820 cell=20.568,17.428 imsize=258,304
-5948 cell=20.152,17.082 imsize=257,304
-6076 cell=19.800,16.781 imsize=257,303
-6204 cell=19.379,16.469 imsize=257,302
-6332 cell=19.053,16.110 imsize=256,303
-6460 cell=19.330,16.151 imsize=247,296
+4540 cell=8.891,7.508 imsize=255,302
+4668 cell=8.422,7.165 imsize=262,308
+4796 cell=8.212,6.969 imsize=261,308
+4924 cell=7.997,6.793 imsize=261,308
+5052 cell=7.821,6.634 imsize=260,307
+5180 cell=7.637,6.494 imsize=260,306
+5308 cell=7.465,6.340 imsize=260,306
+5436 cell=7.310,6.184 imsize=259,306
+5564 cell=7.177,6.069 imsize=258,305
+5692 cell=7.006,5.942 imsize=258,304
+5820 cell=6.856,5.809 imsize=258,304
+5948 cell=6.717,5.694 imsize=257,304
+6076 cell=6.600,5.594 imsize=257,303
+6204 cell=6.460,5.490 imsize=257,302
+6332 cell=6.351,5.370 imsize=256,303
+6460 cell=6.443,5.384 imsize=247,296
 }}}
 
@@ -403 +403 @@
 dac_repeat.pl --task invert --repeat vis --repeat-freq rnovalmc --repeat map --repeat-freq rnovalmc_m2_%f.map --repeat beam --repeat-freq rnovalmc_m2_%f.beam "select=-auto,-ant(6)" stokes=ii options=mfs,sdb slop=1 --args-file dac_invert_args.txt
 
-This makes the triple-sized maps and beams, and now we have to chop out the normal sized map
-using imframe. We make the file dac_imframe_args.txt that looks like this:
+This makes the triple-sized maps and beams, and now we have to specify the normal sized map
+while using mfclean. We make the file dac_mfclean_args.txt that looks like this:
 
 {{{
@@ -425 +425 @@
 }}}
 
-And we run imframe using dac_repeat.pl like this:
-
-dac_repeat.pl --task imframe --repeat in --repeat-freq rnovalmc_m2_%f.map --repeat out --repeat-freq rnovalmc_m2_small_%f.map --args-file dac_imframe_args.txt
-
+This is handy since mfclean also requires that the "region being cleaned should be reasonably 
+centred in the map, and should have an appreciable guard band around it to the map edge (of
+size comparable to the width of the region being cleaned)".
+
+We run mfclean using dac_repeat.pl like this:
+
+dac_repeat.pl --task mfclean --repeat map --repeat-freq rnovalmc_m2_%f.map --repeat beam --repeat-freq rnovalmc_m2_%f.beam --repeat out --repeat-freq rnovalmc_m2_%f.clean --args-file dac_mfclean_args.txt
+
+We can still use restor with MFS datasets, but it will create a triple-sized image, although
+of course only the central region will be cleaned.
+
+dac_repeat.pl --task restor --repeat model --repeat-freq rnovalmc_m2_%f.clean --repeat beam --repeat-freq rnovalmc_m2_%f.beam --repeat map --repeat-freq rnovalmc_m2_%f.map --repeat out --repeat-freq rnovalmc_m2_%f.restor
+
+If you only want to see the primary beam in your restor'd images, then you can use imframe
+using the same dac_mfclean_args.txt:
+
+dac_repeat.pl --task imframe --repeat in --repeat-freq rnovalmc_m2_%f.restor --repeat out --repeat-freq rnovalmc_m2_small_%f.restor --args-file dac_mfclean_args.txt
+