FITLD TACOP: CL1->2, AN1->2 CLCOR, with antenna 3; opty 'antp'; clcorprm -0.8761, +0.1287, +1.1096, 0 updates CL2, AN1, gets good positions for Mopra (according to Bob's email) Edited uvflg file to discard bad intervals/IFs at Ks, Ho UVFLG created FG1 using rg001a.uvflg UVFLG adds flagging of R pols to Mo (stokes 'rr' and stokes 'rl') ANTAB with all evn+sh+mp+ho, OFFSET 2: TY1, GC1 ANTAB with all evn+sh+mp+ho, OFFSET 0: TY2, GC2 APCAL without opacity: uses TY1, GC1, creates SN1 APCAL with opacity corrections : opcode 'opcr' (faster than grdr, same results) aparm(2) 86 to include low elevation measures - improves significantly SH solution trecvr 149,167,9999,9999,37,41,1000,1000,101,93,30,30,93,100,1 tau0 0.064,0,0.11,0.2,0.06,0.03,0.2,0 dofit 1, -1, 1, -1, 1, 1, 1, -1, -1 uses TY2, GC2, creates SN2 initial guesses for trecvr and tau0 from test runs results: mores.> APCAL1: Writing SN table 2 mores.> APCAL1: SH RCP 0/11h 2m Trec (K): 139.56 Zen. opac.: 0.086 mores.> APCAL1: SH LCP 0/11h 2m Trec (K): 147.45 Zen. opac.: 0.078 mores.> APCAL1: MP RCP 0/10h 1m Trec (K): 32.10 Zen. opac.: 0.101 mores.> APCAL1: MP LCP 0/10h 1m Trec (K): 34.22 Zen. opac.: 0.111 mores.> APCAL1: EF RCP 0/15h 1m Trec (K): 99.83 Zen. opac.: 0.071 mores.> APCAL1: EF LCP 0/15h 1m Trec (K): 91.71 Zen. opac.: 0.086 mores.> APCAL1: MC RCP 0/15h 1m Trec (K): 32.04 Zen. opac.: 0.026 mores.> APCAL1: MC LCP 0/15h 1m Trec (K): 31.12 Zen. opac.: 0.029 mores.> APCAL1: ON RCP 0/15h 1m Trec (K): 52.81 Zen. opac.: 0.252 mores.> APCAL1: ON LCP 0/15h 1m Trec (K): 57.12 Zen. opac.: 0.256 KS, JB, CM can not be fit because they only have nominal values for Tsys HO failed to give a reasonable fit, uncorrected tsys will be used CLCAL twice from CL2 to CL3: antennas 2 4 9 10 0; snver 1 antennas 1 3 5 6 7 0; snver 2 interpol '2pt' CLCOR opcode 'PANG': CL3 to CL4 UVFLG bchan 1 echan 2 bchan 31 echan 32 (bad phases to some telescopes, low amplitudes to all) FRING twice >timerang 0 11 46 0 0 11 47 0 antenna 1 3 4 0 snver 3 (17 good, 7 failed - the ones to Ho missing IFs) >timerang = 0 13 44 0 0 13 45 0 antenna 1 5 0 snver 4 (16 good) CLCAL snver 3; inver 4 gainver 4; gainuse 5 refant 1 antenna 0 opcode 'calp' FRING again, refant 5; antennas 5 6 7 9 10 0 (NOT 1!!) >timerang = 0 13 44 0 0 13 45 0 snver 5 (34 good, 6 bad - Cm missing IFs) CLCAL snver 5 gainver 5; gainuse 6 refant 5 UVFLG antenna 9 0 bchan 24 echan 32 - Cm bad channels in upper part of the band FRING refant 5 search 5 1 3 solint 2 aparm (5) 1, (7) 4.5, (9) 1 dparm (4) 1, (7) 1 makes SN6 mores.> FRING1: Found 8192 good solutions mores.> FRING1: Failed on 680 solutions UVFLG timeran 0 17 35 0 0 17 45 0 - bad rates and delays SNEDT for outliers: SN7 CLCAL CL6+SN7 -> CL7 three times, one per source, interpo 'ambg', opcode 'calp' BPASS on scan 24 (all antennas but Cm) two more channels at the band edge need flagging TACOP FG1->FG2 UVFLG bif 1; eif 4 bif 29; eif 32 POSSM looks good SPLIT! low amplitudes for Mc, Jb - opacity over-corrected for On (done twice, once in gain curve provided by station, once with APCAL) ---------------------- TACOP SN1,2->SN8,9 SNCOR to scale Mc, Jb on both SN8,9: >opcode 'mula' >sncorprm 2 0 >antennas 6 10 0 modifies SN8,9 CLCAL twice from CL2 to CL8: antennas 2 4 7 9 10 0; snver 8 antennas 1 3 5 6 0; snver 9 interpol '2pt' CLCOR, opcode 'PANG', modifies CL8 CLCAL twice for IFs alignement snver 3; inver 4 gainver 8; gainuse 9 refant 1 antenna 0 opcode 'calp' snver 5; inver 0 gainver 9; gainuse 10 refant 5 CLCAL x3 SN7+CL10->CL11 (once per source) refant 5; subarray 1 interpo 'ambg'; opcode 'calp' snver 7; gainver 10; gainuse 11 source '0805-077' ''; calsour sour source '1055+018' ''; calsour sour source 'J0948+0022' ''; calsour sour Attempt opacity correction for sources without Tsys CLCOR CL11->CL12 opcode 'opac' clcorprm 0.1 0 antenna 4 10 0 Attempt scaling down On all IFs by 0.8, Jb IFs 1-2 by 0.9 CLCOR CL12->13 opcode 'gain' clcorprm 0.8 0; antenna 7 0 CL13->CL13 clcorprm 0.9 0; antenna 10 0; bif 1; eif2 ============================================================================================================ 23-24 Sep. 2009 ZP - Polarization calibration ----------------------------- AIPS User 2403 Cross-hand fringe-fitting to correct for IF-to-IF RL and LR phase variation. Needs a strong calibrator scan with all the telecopes. Target is not bright enough -we have to use 1055+018, with the EVN+Sh only. Before running VLBACPOL: RUN VLBAUTIL >refant 1 - Must be either first or last antenna in the list; cannot be Ef (5), unfortunately. >baseline 1 5 6 7 10 >calsour '1055+018' >dparm 2 200 100 1 0 >opcode '' >timer 0 14 20 51 0 14 24 19 >solint 5 >flagver 2 >gainuse 13 >subarray 1 (AN.2-3 confuses AIPS) (Note failed with Jb as refant.) There were failing solutions, but POSSM definitely shows improved inter-IF RL/LR phase alignment. This created SN.10 and CL.14, solutions are only available for Sh,Ef,Mc,On,Jb. SPLIT target with CL.14/FG.2/BP.1. Difmap editing and selfcal imaging of target data. Fitld selfcaled data (J0948+0022.uvf) and map (J0948+0022.fits). MULTI J0948+0022.UVF: J0948+0022.UVF.1 J0948+0022.DIFMAP.1 J0948+0022.MULTI.1 Difmap does not calibrate RR and LL separately, we need one more CALIB run. Single R-L gain difference for all tels. CALIB >getn 18 AIPS 1: Got(1) disk= 4 user=2403 type=UV J0948+0022.MULTI.1 >get2n 17 AIPS 1: Got(2) disk= 4 user=2403 type=MA J0948+0022.DIFMAP.1 >calsour 'j0948+00' '' >soltype 'l1' >solmode 'a&p' >refant 5 >solint 1200 LPCAL => LPCAL.MSG >calsour 'j0948+00' >docal 2; gainuse 2 >solint 0 >get2n 17 AIPS 1: Got(2) disk= 4 user=2403 type=MA J0948+0022.DIFMAP.1 >ncomp 1 Check LR/RR ratio VPLOT >antennas 5 0 baseline 2 0 etc docal 1; gainuse 0 dopol -1/1 aparm 9, 10, 1, -1.0, 1.0, -1.0, 1.0 polplot 'lr/rr' Somewhat imrpoved, especially well seen for Ef-Mc (lowest scatter). SPLIT CL.14/FG.2/BP.1; dopol 1 1 SH 2 KS 3 MP 4 HO 5 EF 6 MC 7 ON 8 YS 9 CM 10 JB