COVER INFORMATION Station: VLBA_MK (Code Mk ) Experiment: The nuclear structure in nearby AGN Exp. Code: gs032c Schedule Version: 1.00 Processed by SCHED version: 11.10 Version 11.1 Beta of about April 26, 201 PI: Tuomas Savolainen Address: MPIfR Bonn Auf dem Huegel 69 53121 Bonn, Germany Phone: +49 228 525 473 EMAIL: tsavolainen@mpifr-bonn.mpg.de Fax: +49 228 525 229 Phone during observation: +7 903 661 4865 Observing mode: C/K-band, dual-pol Notes: C/K-band, Radioastron-compatible frequency setup P-CAL is ON, Tsys is ON auto-level (AGC) is ON Please, send Mk5 disk packs to MPIfR-Bonn Schedule for VLBA_MK (Code Mk ) Page 2 The nuclear structure in nearby AGN UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Wed 5 Feb 2014 Day 36 --- ---------- U-band GRT-only VLBI scans - segment 08Ua ---------- Next scan frequencies: 15369.00 15369.00 15369.00 15369.00 Next BBC frequencies: 769.00 769.00 769.00 769.00 Next scan bandwidths: 16.00 16.00 16.00 16.00 08 03 00 1228+126 06 42 46 6.7 79.3 -5.8 -71.1 0 0 08 03 00 08 08 00 --- 06 47 47 7.9 79.7 -5.7 -71.3 300 10 08 03 01 ---------- Q-band GRT-only VLBI scans - segment 08Qa ---------- Next scan frequencies: 43120.00 43120.00 43136.00 43136.00 Next BBC frequencies: 720.00 720.00 736.00 736.00 08 09 00 1228+126 06 48 47 8.1 79.8 -5.7 -71.4 45 10 08 09 00 08 14 00 --- 06 53 48 9.3 80.2 -5.6 -71.6 300 19 08 09 01 ---------- Space segment 08: C-band VLBI scans ---------- Next scan frequencies: 4836.00 4836.00 4836.00 4836.00 Next BBC frequencies: 736.00 736.00 736.00 736.00 08 15 00 1228+126 06 54 48 9.5 80.2 -5.6 -71.6 45 19 08 15 00 08 24 30 --- 07 04 19 11.7 81.0 -5.5 -72.0 570 37 08 15 01 08 25 00 1228+126 07 04 49 11.8 81.0 -5.4 -72.0 24 37 08 25 00 08 34 30 --- 07 14 21 14.1 81.8 -5.3 -72.4 570 56 08 25 01 08 35 00 1228+126 07 14 51 14.2 81.8 -5.3 -72.4 24 56 08 35 00 08 45 00 --- 07 24 53 16.5 82.6 -5.1 -72.7 600 75 08 35 01 ---------- U-band GRT-only VLBI scans - segment 09Ua ---------- Next scan frequencies: 15369.00 15369.00 15369.00 15369.00 Next BBC frequencies: 769.00 769.00 769.00 769.00 08 46 00 1236+077 07 25 53 13.2 86.8 -5.2 -71.3 45 75 08 46 00 08 48 00 --- 07 27 53 13.7 86.9 -5.2 -71.3 120 79 08 46 01 08 49 00 1228+126 07 28 53 17.4 82.9 -5.0 -72.8 45 79 08 49 00 08 54 00 --- 07 33 54 18.6 83.2 -5.0 -73.0 300 88 08 49 01 ---------- Q-band GRT-only VLBI scans - segment 09Qa ---------- Next scan frequencies: 43120.00 43120.00 43136.00 43136.00 Next BBC frequencies: 720.00 720.00 736.00 736.00 08 55 00 1236+077 07 34 54 15.3 87.5 -5.1 -71.4 45 88 08 55 00 08 57 00 --- 07 36 55 15.8 87.7 -5.1 -71.4 120 92 08 55 01 Schedule for VLBA_MK (Code Mk ) Page 3 The nuclear structure in nearby AGN UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Wed 5 Feb 2014 Day 36 --- 08 58 00 1228+126 07 37 55 19.6 83.5 -4.9 -73.1 45 92 08 58 00 09 03 00 --- 07 42 56 20.7 83.9 -4.8 -73.3 300 102 08 58 01 ---------- C-band GRT-only VLBI scans - segment 09Ca ---------- Next scan frequencies: 4836.00 4836.00 4836.00 4836.00 Next BBC frequencies: 736.00 736.00 736.00 736.00 09 04 00 1236+077 07 43 56 17.5 88.2 -4.9 -71.5 45 102 09 04 00 09 06 00 --- 07 45 56 17.9 88.4 -4.9 -71.5 120 106 09 04 01 09 07 00 1228+126 07 46 56 21.7 84.2 -4.7 -73.4 45 106 09 07 00 09 17 00 --- 07 56 58 24.0 85.0 -4.6 -73.6 600 125 09 07 01 09 18 00 1236+077 07 57 58 20.8 89.4 -4.7 -71.6 45 125 09 18 00 09 20 00 --- 07 59 59 21.2 89.6 -4.7 -71.6 120 129 09 18 01 09 21 00 1228+126 08 00 59 25.0 85.3 -4.5 -73.7 45 129 09 21 00 09 31 00 --- 08 11 00 27.3 86.0 -4.3 -73.9 600 148 09 21 01 09 32 00 1236+077 08 12 01 24.1 90.6 -4.5 -71.6 45 148 09 32 00 09 34 00 --- 08 14 01 24.5 90.8 -4.4 -71.6 120 152 09 32 01 09 35 00 1228+126 08 15 01 28.2 86.3 -4.3 -74.0 45 152 09 35 00 09 45 00 --- 08 25 03 30.6 87.1 -4.1 -74.1 600 171 09 35 01 09 46 00 1236+077 08 26 03 27.4 91.8 -4.2 -71.5 45 171 09 46 00 09 48 00 --- 08 28 03 27.8 92.0 -4.2 -71.5 120 175 09 46 01 09 49 00 1228+126 08 29 03 31.5 87.4 -4.0 -74.2 45 175 09 49 00 09 59 00 --- 08 39 05 33.9 88.2 -3.9 -74.3 600 194 09 49 01 ---------- U-band GRT-only VLBI scans - segment 09Ub ---------- Next scan frequencies: 15369.00 15369.00 15369.00 15369.00 Next BBC frequencies: 769.00 769.00 769.00 769.00 10 00 00 1236+077 08 40 05 30.7 93.1 -4.0 -71.3 45 194 10 00 00 10 02 00 --- 08 42 05 31.1 93.3 -4.0 -71.3 120 198 10 00 01 10 03 00 1228+126 08 43 06 34.8 88.5 -3.8 -74.3 45 198 10 03 00 10 09 00 --- 08 49 07 36.3 89.0 -3.7 -74.3 360 210 10 03 01 Schedule for VLBA_MK (Code Mk ) Page 4 The nuclear structure in nearby AGN UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Wed 5 Feb 2014 Day 36 --- ---------- Q-band GRT-only VLBI scans - segment 09Qb ---------- Next scan frequencies: 43120.00 43120.00 43136.00 43136.00 Next BBC frequencies: 720.00 720.00 736.00 736.00 10 10 00 1236+077 08 50 07 33.0 94.0 -3.8 -71.2 45 210 10 10 00 10 12 00 --- 08 52 07 33.5 94.2 -3.8 -71.1 120 213 10 10 01 10 13 00 1228+126 08 53 07 37.2 89.4 -3.6 -74.4 45 213 10 13 00 10 19 00 --- 08 59 08 38.6 89.9 -3.5 -74.4 360 225 10 13 01 ---------- Space segment 09: C-band VLBI scans ---------- Next scan frequencies: 4836.00 4836.00 4836.00 4836.00 Next BBC frequencies: 736.00 736.00 736.00 736.00 10 20 00 1228+126 09 00 08 38.9 89.9 -3.5 -74.4 54 225 10 20 00 10 29 30 --- 09 09 40 41.1 90.8 -3.4 -74.4 570 243 10 20 01 10 30 00 1228+126 09 10 10 41.2 90.8 -3.4 -74.3 24 243 10 30 00 10 39 30 --- 09 19 42 43.4 91.7 -3.2 -74.3 570 262 10 30 01 10 40 00 1228+126 09 20 12 43.6 91.7 -3.2 -74.3 24 262 10 40 00 10 49 30 --- 09 29 43 45.8 92.6 -3.0 -74.2 570 280 10 40 01 10 50 00 1228+126 09 30 13 45.9 92.6 -3.0 -74.2 24 280 10 50 00 10 59 30 --- 09 39 45 48.2 93.6 -2.9 -74.0 570 298 10 50 01 11 00 00 1228+126 09 40 15 48.3 93.6 -2.9 -74.0 24 298 11 00 00 11 09 30 --- 09 49 47 50.5 94.6 -2.7 -73.7 570 316 11 00 01 11 10 00 1228+126 09 50 17 50.6 94.7 -2.7 -73.7 24 316 11 10 00 11 20 00 --- 10 00 18 53.0 95.8 -2.5 -73.4 600 336 11 10 01 ---------- C/U/K/Q-band VLBA + GBT scans - segment 10 ---------- 11 21 00 1228+126 10 01 18 53.2 95.9 -2.5 -73.3 54 336 11 21 00 11 26 00 --- 10 06 19 54.4 96.5 -2.4 -73.1 300 345 11 21 01 Next scan frequencies: 15369.00 15369.00 15369.00 15369.00 Next BBC frequencies: 769.00 769.00 769.00 769.00 11 26 30 1228+126 10 06 49 54.5 96.6 -2.4 -73.1 24 345 11 26 30 11 31 30 --- 10 11 50 55.7 97.2 -2.3 -72.8 300 355 11 26 31 Schedule for VLBA_MK (Code Mk ) Page 5 The nuclear structure in nearby AGN UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Wed 5 Feb 2014 Day 36 --- Next scan frequencies: 43120.00 43120.00 43136.00 43136.00 Next BBC frequencies: 720.00 720.00 736.00 736.00 11 32 00 1228+126 10 12 20 55.8 97.3 -2.3 -72.8 24 355 11 32 00 11 37 00 --- 10 17 21 57.0 97.9 -2.2 -72.5 300 364 11 32 01 Next scan frequencies: 22236.00 22236.00 22236.00 22236.00 Next BBC frequencies: 736.00 736.00 736.00 736.00 11 37 30 1228+126 10 17 51 57.1 98.0 -2.2 -72.5 15 364 11 37 30 11 42 30 --- 10 22 52 58.2 98.7 -2.1 -72.2 300 374 11 37 31 Next scan frequencies: 4836.00 4836.00 4836.00 4836.00 Next BBC frequencies: 736.00 736.00 736.00 736.00 11 43 00 1226+023 10 23 22 54.3 116.0 -2.1 -57.8 10 374 11 43 00 11 46 00 --- 10 26 23 55.0 116.7 -2.1 -57.2 180 380 11 43 01 Next scan frequencies: 15369.00 15369.00 15369.00 15369.00 Next BBC frequencies: 769.00 769.00 769.00 769.00 11 46 30 1226+023 10 26 53 55.1 116.8 -2.0 -57.1 24 380 11 46 30 11 49 30 --- 10 29 53 55.7 117.6 -2.0 -56.6 180 386 11 46 31 Next scan frequencies: 43120.00 43120.00 43136.00 43136.00 Next BBC frequencies: 720.00 720.00 736.00 736.00 11 50 00 1226+023 10 30 23 55.8 117.7 -2.0 -56.5 24 386 11 50 00 11 53 00 --- 10 33 24 56.4 118.4 -1.9 -55.9 180 391 11 50 01 Next scan frequencies: 22236.00 22236.00 22236.00 22236.00 Next BBC frequencies: 736.00 736.00 736.00 736.00 11 53 30 1226+023 10 33 54 56.5 118.6 -1.9 -55.8 24 391 11 53 30 11 56 30 --- 10 36 54 57.1 119.3 -1.9 -55.1 180 397 11 53 31 Next scan frequencies: 15369.00 15369.00 15369.00 15369.00 Next BBC frequencies: 769.00 769.00 769.00 769.00 11 57 00 1228+126 10 37 24 61.6 100.9 -1.9 -71.0 9 397 11 57 00 12 02 00 --- 10 42 25 62.8 101.8 -1.8 -70.5 300 407 11 57 01 Next scan frequencies: 43120.00 43120.00 43136.00 43136.00 Next BBC frequencies: 720.00 720.00 736.00 736.00 12 02 30 1228+126 10 42 55 62.9 101.9 -1.8 -70.5 24 407 12 02 30 12 07 30 --- 10 47 56 64.0 102.8 -1.7 -69.9 300 416 12 02 31 Next scan frequencies: 22236.00 22236.00 22236.00 22236.00 Next BBC frequencies: 736.00 736.00 736.00 736.00 12 08 00 1228+126 10 48 26 64.2 102.9 -1.7 -69.8 24 416 12 08 00 12 13 00 --- 10 53 27 65.3 103.9 -1.6 -69.2 300 426 12 08 01 Schedule for VLBA_MK (Code Mk ) Page 6 The nuclear structure in nearby AGN UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Wed 5 Feb 2014 Day 36 --- Next scan frequencies: 15369.00 15369.00 15369.00 15369.00 Next BBC frequencies: 769.00 769.00 769.00 769.00 12 13 30 1228+126 10 53 57 65.4 104.0 -1.6 -69.1 24 426 12 13 30 12 18 30 --- 10 58 58 66.6 105.1 -1.5 -68.4 300 436 12 13 31 Next scan frequencies: 43120.00 43120.00 43136.00 43136.00 Next BBC frequencies: 720.00 720.00 736.00 736.00 12 19 00 1228+126 10 59 28 66.7 105.2 -1.5 -68.3 24 436 12 19 00 12 24 00 --- 11 04 29 67.8 106.4 -1.5 -67.5 300 445 12 19 01 Next scan frequencies: 15369.00 15369.00 15369.00 15369.00 Next BBC frequencies: 769.00 769.00 769.00 769.00 12 24 30 1228+126 11 04 59 67.9 106.5 -1.4 -67.4 24 445 12 24 30 12 29 30 --- 11 10 00 69.0 107.9 -1.4 -66.4 300 455 12 24 31 Next scan frequencies: 43120.00 43120.00 43136.00 43136.00 Next BBC frequencies: 720.00 720.00 736.00 736.00 12 30 00 1228+126 11 10 30 69.2 108.0 -1.4 -66.3 24 455 12 30 00 12 35 00 --- 11 15 31 70.3 109.4 -1.3 -65.2 300 464 12 30 01 Next scan frequencies: 15369.00 15369.00 15369.00 15369.00 Next BBC frequencies: 769.00 769.00 769.00 769.00 12 35 30 1228+126 11 16 01 70.4 109.6 -1.3 -65.1 24 464 12 35 30 12 40 30 --- 11 21 01 71.5 111.2 -1.2 -63.9 300 474 12 35 31 Next scan frequencies: 43120.00 43120.00 43136.00 43136.00 Next BBC frequencies: 720.00 720.00 736.00 736.00 12 41 00 1228+126 11 21 32 71.6 111.4 -1.2 -63.7 24 474 12 41 00 12 46 00 --- 11 26 32 72.7 113.2 -1.1 -62.3 300 484 12 41 01 Next scan frequencies: 15369.00 15369.00 15369.00 15369.00 Next BBC frequencies: 769.00 769.00 769.00 769.00 12 46 30 1228+126 11 27 02 72.8 113.4 -1.1 -62.1 24 484 12 46 30 12 52 30 --- 11 33 03 74.1 115.9 -1.0 -60.1 360 495 12 46 31 Next scan frequencies: 43120.00 43120.00 43136.00 43136.00 Next BBC frequencies: 720.00 720.00 736.00 736.00 12 53 00 1228+126 11 33 34 74.2 116.1 -1.0 -59.9 24 495 12 53 00 12 59 00 --- 11 39 35 75.4 119.0 -0.9 -57.4 360 507 12 53 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: ra2cm2.set Matching groups in ./gs032c_freq_sess313rdbe.dat: v2cm_d3 Fourth 2cm filter Setup group: 61 Station: VLBA_MK Total bit rate: 256 Format: MARK5B Bits per sample: 2 Sample rate: 32.000 Number of channels: 4 DBE type: RDBE_DDC Speedup factor: 1.00 Disk used to record data. 1st LO= 14600.00 14600.00 14600.00 14600.00 Net SB= L L U U IF SB = U U U U Pol. = RCP LCP RCP LCP BBC = 1 2 3 4 BBC SB= L L U U IF = B D B D VLBA FE= omit 2cm omit 2cm VLBA Synth= 14.6 11.4 11.4 The following frequency sets based on these setups were used. Frequency Set: 39 Setup file default. LO sum= 15369.00 15369.00 15369.00 15369.00 BBC fr= 769.00 769.00 769.00 769.00 Bandwd= 16.00 16.00 16.00 16.00 Matching frequency sets: 39 40 41 42 43 44 45 46 47 48 Track assignments are: track1= 2, 4, 6, 8 barrel=roll_off ======== Setup file: ra7mm2.set Matching groups in ./gs032c_freq_sess313rdbe.dat: v7mm_c8 Setup group: 71 Station: VLBA_MK Total bit rate: 256 Format: MARK5B Bits per sample: 2 Sample rate: 32.000 Number of channels: 4 DBE type: RDBE_DDC Speedup factor: 1.00 Disk used to record data. 1st LO= 42400.00 42400.00 42400.00 42400.00 Net SB= U U U U IF SB = U U U U Pol. = RCP LCP RCP LCP BBC = 1 2 3 4 BBC SB= U U U U IF = A C A C VLBA FE= 7mm omit 7mm omit VLBA Synth= 15.1 7.6 11.6 The following frequency sets based on these setups were used. Frequency Set: 49 Setup file default. LO sum= 43120.00 43120.00 43136.00 43136.00 BBC fr= 720.00 720.00 736.00 736.00 Bandwd= 16.00 16.00 16.00 16.00 Matching frequency sets: 49 50 51 52 53 54 55 56 57 58 Track assignments are: track1= 2, 4, 6, 8 barrel=roll_off ======== Setup file: ra6cm2.set Matching groups in ./gs032c_freq_sess313rdbe.dat: vc_d Setup group: 11 Station: VLBA_MK Total bit rate: 256 Format: MARK5B Bits per sample: 2 Sample rate: 32.000 Number of channels: 4 DBE type: RDBE_DDC Speedup factor: 1.00 Disk used to record data. 1st LO= 4100.00 4100.00 4100.00 4100.00 Net SB= L L U U IF SB = U U U U Pol. = RCP LCP RCP LCP BBC = 1 2 3 4 BBC SB= L L U U IF = A C A C VLBA FE= 6cm omit 6cm omit VLBA Synth= 15.1 4.1 15.1 The following frequency sets based on these setups were used. Frequency Set: 27 Setup file default. LO sum= 4836.00 4836.00 4836.00 4836.00 BBC fr= 736.00 736.00 736.00 736.00 Bandwd= 16.00 16.00 16.00 16.00 Matching frequency sets: 27 29 32 35 59 61 63 64 65 66 Track assignments are: track1= 2, 4, 6, 8 barrel=roll_off ======== Setup file: ra1cm2.set Matching groups in ./gs032c_freq_sess313rdbe.dat: v1cm_b3 Setup group: 38 Station: VLBA_MK Total bit rate: 256 Format: MARK5B Bits per sample: 2 Sample rate: 32.000 Number of channels: 4 DBE type: RDBE_DDC Speedup factor: 1.00 Disk used to record data. 1st LO= 21500.00 21500.00 21500.00 21500.00 Net SB= L L U U IF SB = U U U U Pol. = RCP LCP RCP LCP BBC = 1 2 3 4 BBC SB= L L U U IF = B D B D VLBA FE= omit 1cm omit 1cm VLBA Synth= 9.1 15.1 12.4 The following frequency sets based on these setups were used. Frequency Set: 28 Setup file default. LO sum= 22236.00 22236.00 22236.00 22236.00 BBC fr= 736.00 736.00 736.00 736.00 Bandwd= 16.00 16.00 16.00 16.00 Matching frequency sets: 28 33 34 36 37 67 68 69 70 71 Track assignments are: track1= 2, 4, 6, 8 barrel=roll_off POSITIONS OF SOURCES USED IN RECORDING SCANS Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) * FAKERA 11 57 21.769299 * 12 00 00.000000 12 00 48.003338 0.00 85 16 41.77889 * 85 00 00.00000 84 54 58.14016 0.00 From catalog imbedded in main SCHED input file. fake circumpolar target for a TS to look at J1239+0730 12 36 52.308755 * 12 39 24.588327 12 40 08.812805 0.10 * 1236+077 07 46 45.39997 * 07 30 17.18902 07 25 28.10329 0.11 J1239+07 From catalog imbedded in main SCHED input file. rfc_2012b Petrov, 2012, unpublished 1855 observations * 1226+023 12 26 33.245835 * 12 29 06.699731 12 29 51.363058 0.00 J1229+0203 02 19 43.30547 * 02 03 08.59797 01 58 18.79035 0.00 3C273B ./gs032c_sources.radioastron 3C273 AGN, rfc_2013d Petrov, 2013, unpublished 32011 observations * 1228+126 12 28 17.569280 * 12 30 49.423382 12 31 33.520344 0.00 J1230+1223 12 40 01.74883 * 12 23 28.04365 12 18 35.78136 0.00 3C274 ./gs032c_sources.radioastron M87 AGN, rfc_2013d Petrov, 2013, unpublished 55201 observations VIR-A SOURCE SCAN SUMMARY FOR SOURCES LISTED ABOVE Scan hours are for recording scans only. Baseline hours are only counted for scans above horizon at both ends. Source Setup file Frequency sets Observing hours (duplicates not shown) Scan Baseline FAKERA ra6cm2.set 11 4.825 0.000 1236+077 ra6cm2.set 1 2 3 4 11 13 16 17 18 19 2 + 1.333 27.967 ra1cm2.set 5 8 9 10 14 15 21 25 26 28 + 1.200 31.800 ra2cm2.set 39 0.067 3.000 ra7mm2.set 49 0.067 3.000 1226+023 ra6cm2.set 1 2 3 4 11 13 16 17 18 19 2 + 1.550 39.583 ra1cm2.set 5 8 9 10 14 15 21 25 26 28 + 1.550 47.583 ra2cm2.set 39 0.050 2.250 ra7mm2.set 49 0.050 2.250 1228+126 ra6cm2.set 1 2 3 4 11 13 16 17 18 19 2 + 15.742 317.813 ra1cm2.set 5 8 9 10 14 15 21 25 26 28 + 14.357 328.818 ra2cm2.set 39 0.783 35.250 ra7mm2.set 49 0.783 35.250 EFFECT OF SOLAR CORONA The solar corona can cause unstable phases for sources too close to the Sun. SCHED provides warnings at individual scans for distances less than 10 degrees. The distance from the Sun to each source in this schedule is: Source Sun distance (deg) FAKERA 109.8 1236+077 129.1 1226+023 130.0 1228+126 132.2 Barry Clark estimates from predictions by Ketan Desai of IPM scattering sizes that the Sun will cause amplitude reductions on the longest VLBA baselines at a solar distance of 60deg F^(-0.6) where F is in GHz. For common VLBI bands, this is: 327 MHz 117. deg 610 MHz 81. deg 1.6 GHz 45. deg 2.3 GHz 36. deg 5.0 GHz 23. deg 8.4 GHz 17. deg 15.0 GHz 12. deg 22.0 GHz 9. deg 43.0 GHz 6. deg