Before the first sken, at the beginning, after first p6 check phases at the polarimeter.
When the sken was observed you can get its map in alfa, delta coordinates at once. Especially it is recommended (necessary) to make the amplitude calibrator map at the beginning of observations to check the whole observing system.
Log at the computer called chef at Effelsberg (at the left when you enter the operation room)
ask the operator
create the directory for your project
cp /local/nod/master/ed36* ket36* tab36* para36* ~62_03
copy necessary files from /local/nod/master (or better from a recent observer to follow any changes) to your directory
ed36bbcal run the program (call ket36bbcal.master)
1020 scan number of the amplitude calibrator, e.q. 1020
-0 start coordinates, must be minus before 0: SLAM/SBET from 36calkl.obs file, here 0o
18 0.5 sampling (arcmin) - SINT but in arcmin: 0.5 here, 30" SINT in 36calkl.obs file
19 8.35 obs. freq in GHz (8.35 GHz)
20 1100 bandwith in MHz (1100 MHZ)
21 Then accept a disk volume on which current data are stored or choose different one with older scans.
After ed36dbcal run, mp and GS files will be created. The numbers from GS* file (4 values: 2 higher - 2 I-channels, and 2 lower - U and Q channels, present gauss fits to the calibrator).
Check percentage of polarization:
at the bottom of GS-file (Prozent):
3c286: ~12; 3c138: ~12
Check polarization angle (Winkel):
3c286: ~33; 3c138: ~-11
If the numbers are not so as expected call the operator, otherwise you can lost all your observing time.
ed36bbmap run the program
1022 scan number of the target
22 0.5 sampling (arcmin) - SINT but in arcmin: 0.5 here, 30" SINT in 36calkl.obs file
23 8.35 obs. freq in GHz (8.35 GHz)
24 1100 bandwith in MHz (1100 MHZ)
25 Then accept a disk volume on which current data are stored or choose different one with older scans.