COVER INFORMATION Station: MEDICINA (Code Mc ) Experiment: Network Monitoring Experiment Exp. Code: N13K3 Schedule Version: 1.00 Processed by SCHED version: 10.20 Release of about July 12, 2012 PI: Ivan Agudo Address: JIVE Postbus 2 7990 AA Dwingeloo The Netherlands Phone: +31-521-596549 EMAIL: agudo@jive.nl Fax: Phone during observation: +31-521-596549 Observing mode: Notes: 1.3 cm NME for session 3/2013 1 Gbps, 2-bit sampling, 16 MHz filters Send the disk pack by express to JIVE Additional DBBC testing data from Mc and Tr is expected. COVER LETTER: Dear EVN friends, This is the schedule for the 1.3cm NME on Oct. 17 2013, involving 17 stations: Eb Jb2 On20 Mc Nt Tr Ys Mh Sv Zc Bd Ur Sh Hh Ky Ku Kt The NME uses a setup with 1 Gbps and consists of integrations on strong calibrators (OJ287, 4C39.25, 0836+710, with ~5, ~8, and ~2.3 Jy at 15GHz as reported by the MOJAVE Team) as well as phase-referencing cycles involving 4C39.25 and a continuum calibrator (J0916+3854) as targets. There are three ftp fringe-test scans starting at: (1) 03:35:40 UT (scan 2, 2 sec, OJ287) (2) 03:59:40 UT (scan 6, 2 sec, 4C39.25) (3) 05:52:50 UT (scan 65, 2 sec, 4C39.25) See you on Skype group chat and Good luck with the session! Ivan Skype account: ivan-agudo Schedule for MEDICINA (Code Mc ) Page 2 Network Monitoring Experiment 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 ---------------------------------------------------------------------------------------- --- Thu 17 Oct 2013 Day 290 --- Next scan frequencies: 22187.49 22187.49 22187.49 22187.49 22219.49 22219.49 22219.49 22219.49 22251.49 22251.49 22251.49 22251.49 22283.49 22283.49 22283.49 22283.49 Next BBC frequencies: 223.49 223.49 223.49 223.49 255.49 255.49 255.49 255.49 287.49 287.49 287.49 287.49 319.49 319.49 319.49 319.49 Next scan bandwidths: 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 03 30 00 OJ287 05 59 48 46.3 469.4 -2.9 -45.7 0 0 03 30 00 03 35 00 --- 06 04 49 47.1 470.6 -2.8 -45.3 300 19 03 30 04 03 35 40 OJ287 06 05 29 47.2 470.8 -2.8 -45.2 37 19 03 35 40 03 40 40 --- 06 10 30 48.1 472.0 -2.8 -44.7 300 39 03 35 44 03 42 40 OJ287 06 12 30 48.4 472.5 -2.7 -44.5 117 39 03 42 40 03 47 40 --- 06 17 31 49.2 473.8 -2.6 -44.0 300 58 03 42 44 03 48 20 OJ287 06 18 11 49.3 474.0 -2.6 -43.9 37 58 03 48 20 03 53 20 --- 06 23 12 50.1 475.3 -2.5 -43.3 300 77 03 48 24 03 54 00 4C39.25 06 23 52 55.7 442.9 -3.1 -65.5 -7 77 03 54 00 03 59 00 --- 06 28 53 56.6 443.6 -3.0 -65.7 293 97 03 54 04 03 59 40 4C39.25 06 29 33 56.7 443.7 -3.0 -65.7 37 97 03 59 40 04 04 40 --- 06 34 34 57.6 444.4 -2.9 -65.9 300 116 03 59 44 04 06 40 4C39.25 06 36 34 57.9 444.7 -2.9 -66.0 117 116 04 06 40 04 07 40 --- 06 37 34 58.1 444.9 -2.8 -66.0 60 120 04 06 44 04 08 20 J0916+3854 06 38 14 60.0 446.8 -2.7 -66.1 32 120 04 08 20 04 09 20 =0913+391 06 39 14 60.2 446.9 -2.6 -66.1 60 124 04 08 24 04 10 10 4C39.25 06 40 05 58.6 445.3 -2.8 -66.1 42 124 04 10 10 04 11 10 --- 06 41 05 58.7 445.4 -2.8 -66.1 60 128 04 10 14 04 12 00 J0916+3854 06 41 55 60.7 447.4 -2.6 -66.1 42 128 04 12 00 04 13 00 =0913+391 06 42 55 60.8 447.5 -2.6 -66.2 60 132 04 12 04 04 13 50 4C39.25 06 43 45 59.2 445.8 -2.7 -66.2 42 132 04 13 50 04 14 50 --- 06 44 45 59.4 446.0 -2.7 -66.2 60 135 04 13 54 04 15 40 J0916+3854 06 45 35 61.3 448.0 -2.5 -66.2 42 135 04 15 40 04 16 40 =0913+391 06 46 36 61.5 448.1 -2.5 -66.2 60 139 04 15 44 04 17 30 4C39.25 06 47 26 59.9 446.4 -2.7 -66.3 42 139 04 17 30 04 18 30 --- 06 48 26 60.0 446.5 -2.7 -66.3 60 143 04 17 34 Schedule for MEDICINA (Code Mc ) Page 3 Network Monitoring Experiment 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 ---------------------------------------------------------------------------------------- --- Thu 17 Oct 2013 Day 290 --- 04 19 20 J0916+3854 06 49 16 62.0 448.6 -2.5 -66.2 42 143 04 19 20 04 20 20 =0913+391 06 50 16 62.1 448.7 -2.5 -66.2 60 147 04 19 24 04 21 10 4C39.25 06 51 06 60.5 447.0 -2.6 -66.3 42 147 04 21 10 04 22 10 --- 06 52 07 60.7 447.1 -2.6 -66.3 60 151 04 21 14 04 23 00 J0916+3854 06 52 57 62.6 449.2 -2.4 -66.3 42 151 04 23 00 04 24 00 =0913+391 06 53 57 62.8 449.4 -2.4 -66.3 60 155 04 23 04 04 24 50 4C39.25 06 54 47 61.2 447.6 -2.6 -66.4 42 155 04 24 50 04 25 50 --- 06 55 47 61.4 447.7 -2.5 -66.4 60 159 04 24 54 04 26 40 J0916+3854 06 56 37 63.3 449.8 -2.4 -66.3 42 159 04 26 40 04 27 40 =0913+391 06 57 37 63.5 450.0 -2.3 -66.3 60 163 04 26 44 04 28 30 4C39.25 06 58 28 61.8 448.2 -2.5 -66.4 42 163 04 28 30 04 29 30 --- 06 59 28 62.0 448.3 -2.5 -66.5 60 166 04 28 34 04 30 20 J0916+3854 07 00 18 63.9 450.5 -2.3 -66.3 42 166 04 30 20 04 31 20 =0913+391 07 01 18 64.1 450.7 -2.3 -66.3 60 170 04 30 24 04 32 10 4C39.25 07 02 08 62.5 448.8 -2.4 -66.5 42 170 04 32 10 04 33 10 --- 07 03 08 62.7 448.9 -2.4 -66.5 60 174 04 32 14 04 34 00 J0916+3854 07 03 58 64.6 451.1 -2.2 -66.2 42 174 04 34 00 04 35 00 =0913+391 07 04 59 64.8 451.3 -2.2 -66.2 60 178 04 34 04 04 35 50 4C39.25 07 05 49 63.1 449.4 -2.4 -66.5 42 178 04 35 50 04 36 50 --- 07 06 49 63.3 449.6 -2.4 -66.5 60 182 04 35 54 04 37 40 J0916+3854 07 07 39 65.2 451.8 -2.2 -66.2 42 182 04 37 40 04 38 40 =0913+391 07 08 39 65.4 452.0 -2.2 -66.2 60 186 04 37 44 04 39 30 4C39.25 07 09 29 63.8 450.0 -2.3 -66.5 42 186 04 39 30 04 40 30 --- 07 10 30 64.0 450.2 -2.3 -66.5 60 190 04 39 34 04 41 20 J0916+3854 07 11 20 65.9 452.5 -2.1 -66.1 42 190 04 41 20 04 42 20 =0913+391 07 12 20 66.1 452.7 -2.1 -66.1 60 194 04 41 24 04 43 10 4C39.25 07 13 10 64.5 450.7 -2.2 -66.5 42 194 04 43 10 04 44 10 --- 07 14 10 64.6 450.9 -2.2 -66.5 60 197 04 43 14 04 45 00 J0916+3854 07 15 00 66.6 453.2 -2.0 -66.1 42 197 04 45 00 04 46 00 =0913+391 07 16 00 66.7 453.4 -2.0 -66.0 60 201 04 45 04 Schedule for MEDICINA (Code Mc ) Page 4 Network Monitoring Experiment 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 ---------------------------------------------------------------------------------------- --- Thu 17 Oct 2013 Day 290 --- 04 46 50 4C39.25 07 16 51 65.1 451.3 -2.2 -66.5 42 201 04 46 50 04 47 50 --- 07 17 51 65.3 451.5 -2.2 -66.5 60 205 04 46 54 04 48 40 J0916+3854 07 18 41 67.2 454.0 -2.0 -66.0 42 205 04 48 40 04 49 40 =0913+391 07 19 41 67.4 454.2 -2.0 -65.9 60 209 04 48 44 04 50 30 4C39.25 07 20 31 65.8 452.0 -2.1 -66.4 42 209 04 50 30 04 51 30 --- 07 21 31 65.9 452.2 -2.1 -66.4 60 213 04 50 34 04 52 20 J0916+3854 07 22 22 67.9 454.7 -1.9 -65.8 42 213 04 52 20 04 53 20 =0913+391 07 23 22 68.0 455.0 -1.9 -65.8 60 217 04 52 24 04 54 10 4C39.25 07 24 12 66.4 452.7 -2.1 -66.4 42 217 04 54 10 04 55 10 --- 07 25 12 66.6 452.9 -2.0 -66.3 60 221 04 54 14 04 56 00 J0916+3854 07 26 02 68.5 455.5 -1.9 -65.7 42 221 04 56 00 04 57 00 =0913+391 07 27 02 68.7 455.8 -1.8 -65.6 60 225 04 56 04 04 57 50 4C39.25 07 27 52 67.1 453.5 -2.0 -66.3 42 225 04 57 50 04 58 50 --- 07 28 53 67.3 453.7 -2.0 -66.2 60 228 04 57 54 04 59 40 J0916+3854 07 29 43 69.2 456.4 -1.8 -65.5 42 228 04 59 40 05 00 40 =0913+391 07 30 43 69.3 456.6 -1.8 -65.4 60 232 04 59 44 05 01 30 4C39.25 07 31 33 67.7 454.2 -1.9 -66.2 42 232 05 01 30 05 02 30 --- 07 32 33 67.9 454.4 -1.9 -66.1 60 236 05 01 34 05 03 20 J0916+3854 07 33 23 69.8 457.2 -1.7 -65.3 42 236 05 03 20 05 04 20 =0913+391 07 34 23 70.0 457.4 -1.7 -65.2 60 240 05 03 24 05 05 10 4C39.25 07 35 14 68.4 455.0 -1.9 -66.0 42 240 05 05 10 05 06 10 --- 07 36 14 68.6 455.2 -1.9 -66.0 60 244 05 05 14 05 07 00 J0916+3854 07 37 04 70.5 458.1 -1.7 -65.0 42 244 05 07 00 05 08 00 =0913+391 07 38 04 70.6 458.3 -1.7 -64.9 60 248 05 07 04 05 08 50 4C39.25 07 38 54 69.0 455.8 -1.8 -65.8 42 248 05 08 50 05 09 50 --- 07 39 54 69.2 456.0 -1.8 -65.8 60 252 05 08 54 05 10 40 J0916+3854 07 40 45 71.1 459.0 -1.6 -64.7 42 252 05 10 40 05 11 40 =0913+391 07 41 45 71.3 459.3 -1.6 -64.6 60 255 05 10 44 05 12 30 4C39.25 07 42 35 69.7 456.6 -1.8 -65.6 42 255 05 12 30 05 13 30 --- 07 43 35 69.9 456.9 -1.7 -65.6 60 259 05 12 34 Schedule for MEDICINA (Code Mc ) Page 5 Network Monitoring Experiment 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 ---------------------------------------------------------------------------------------- --- Thu 17 Oct 2013 Day 290 --- 05 14 20 J0916+3854 07 44 25 71.8 460.0 -1.6 -64.4 42 259 05 14 20 05 15 20 =0913+391 07 45 25 71.9 460.3 -1.5 -64.3 60 263 05 14 24 05 16 10 4C39.25 07 46 15 70.3 457.5 -1.7 -65.4 42 263 05 16 10 05 17 10 --- 07 47 16 70.5 457.7 -1.7 -65.3 60 267 05 16 14 05 18 00 J0916+3854 07 48 06 72.4 461.0 -1.5 -64.0 42 267 05 18 00 05 19 00 =0913+391 07 49 06 72.6 461.3 -1.5 -63.9 60 271 05 18 04 05 19 50 4C39.25 07 49 56 71.0 458.4 -1.6 -65.1 42 271 05 19 50 05 20 50 --- 07 50 56 71.2 458.7 -1.6 -65.1 60 275 05 19 54 05 21 40 J0916+3854 07 51 46 73.0 462.1 -1.4 -63.5 42 275 05 21 40 05 22 40 =0913+391 07 52 46 73.2 462.4 -1.4 -63.4 60 279 05 21 44 05 23 30 4C39.25 07 53 37 71.6 459.3 -1.6 -64.8 42 279 05 23 30 05 24 30 --- 07 54 37 71.8 459.6 -1.6 -64.7 60 283 05 23 34 05 25 20 J0916+3854 07 55 27 73.7 463.2 -1.4 -63.0 42 283 05 25 20 05 26 20 =0913+391 07 56 27 73.9 463.5 -1.4 -62.9 60 286 05 25 24 05 27 10 4C39.25 07 57 17 72.3 460.3 -1.5 -64.5 42 286 05 27 10 05 28 10 --- 07 58 17 72.5 460.6 -1.5 -64.4 60 290 05 27 14 05 29 00 J0916+3854 07 59 08 74.3 464.4 -1.3 -62.5 41 290 05 29 00 05 30 00 =0913+391 08 00 08 74.5 464.7 -1.3 -62.3 60 294 05 29 04 05 30 50 4C39.25 08 00 58 72.9 461.4 -1.4 -64.0 41 294 05 30 50 05 31 50 --- 08 01 58 73.1 461.7 -1.4 -63.9 60 298 05 30 54 05 32 40 J0916+3854 08 02 48 75.0 465.6 -1.2 -61.8 41 298 05 32 40 05 33 40 =0913+391 08 03 48 75.1 466.0 -1.2 -61.6 60 302 05 32 44 05 34 30 4C39.25 08 04 38 73.6 462.5 -1.4 -63.6 41 302 05 34 30 05 35 30 --- 08 05 39 73.7 462.8 -1.4 -63.4 60 306 05 34 34 05 36 20 J0916+3854 08 06 29 75.6 467.0 -1.2 -61.1 41 306 05 36 20 05 37 20 =0913+391 08 07 29 75.8 467.4 -1.2 -60.9 60 310 05 36 24 05 38 10 4C39.25 08 08 19 74.2 463.6 -1.3 -63.0 41 310 05 38 10 05 39 10 --- 08 09 19 74.4 463.9 -1.3 -62.9 60 314 05 38 14 05 40 00 J0916+3854 08 10 09 76.2 468.4 -1.1 -60.3 40 314 05 40 00 05 41 00 =0913+391 08 11 09 76.4 468.8 -1.1 -60.0 60 317 05 40 04 Schedule for MEDICINA (Code Mc ) Page 6 Network Monitoring Experiment 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 ---------------------------------------------------------------------------------------- --- Thu 17 Oct 2013 Day 290 --- 05 41 50 4C39.25 08 12 00 74.8 464.8 -1.3 -62.4 40 317 05 41 50 05 42 50 --- 08 13 00 75.0 465.2 -1.2 -62.3 60 321 05 41 54 05 43 40 J0916+3854 08 13 50 76.8 470.0 -1.1 -59.4 40 321 05 43 40 05 44 40 =0913+391 08 14 50 77.0 470.4 -1.0 -59.1 60 325 05 43 44 05 45 30 4C39.25 08 15 40 75.5 466.1 -1.2 -61.8 40 325 05 45 30 05 46 30 --- 08 16 40 75.6 466.5 -1.2 -61.6 60 329 05 45 34 05 47 20 J0916+3854 08 17 31 77.4 471.6 -1.0 -58.3 40 329 05 47 20 05 48 20 =0913+391 08 18 31 77.6 472.1 -1.0 -58.0 60 333 05 47 24 05 49 10 4C39.25 08 19 21 76.1 467.5 -1.1 -61.0 40 333 05 49 10 05 50 10 --- 08 20 21 76.3 467.9 -1.1 -60.8 60 337 05 49 14 05 51 00 J0916+3854 08 21 11 78.0 473.4 -0.9 -57.1 39 337 05 51 00 05 52 00 =0913+391 08 22 11 78.2 473.9 -0.9 -56.8 60 341 05 51 04 05 52 50 4C39.25 08 23 01 76.7 469.0 -1.1 -60.1 39 341 05 52 50 05 57 50 --- 08 28 02 77.6 471.3 -1.0 -58.7 300 360 05 52 54 05 59 50 0836+710 08 30 03 63.6 362.4 -0.2 -174.9 -29 360 05 59 50 06 04 50 --- 08 35 03 63.7 361.4 -0.1 -176.9 271 379 05 59 54 06 05 30 0836+710 08 35 44 63.7 361.3 -0.1 -177.2 37 379 06 05 30 06 10 30 --- 08 40 44 63.7 360.4 -0.0 -179.2 300 399 06 05 34 06 11 10 0836+710 08 41 24 63.7 360.3 -0.0 -179.4 37 399 06 11 10 06 16 10 --- 08 46 25 63.7 359.3 0.1 178.5 300 418 06 11 14 06 16 50 0836+710 08 47 05 63.7 359.2 0.1 178.3 37 418 06 16 50 06 21 50 --- 08 52 06 63.7 358.3 0.2 176.3 300 437 06 16 54 06 22 30 0836+710 08 52 46 63.7 358.2 0.2 176.0 37 437 06 22 30 06 30 00 --- 09 00 18 63.6 356.8 0.3 173.0 450 466 06 22 34 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess313.K1024 Matching groups in /aps3/sched10.2/catalogs/freq.dat: mc13mm values confirmed Maccaferri (CR 30Nov00) Setup group: 19 Station: MEDICINA Total bit rate: 512 Format: MKIV1:4 Bits per sample: 1 Sample rate: 32.000 Number of channels: 16 DBE type: Speedup factor: 1.00 Disk used to record data. 1st LO= 21964.00 21964.00 21964.00 21964.00 21964.00 21964.00 21964.00 21964.00 21964.00 21964.00 21964.00 21964.00 21964.00 21964.00 21964.00 21964.00 Net SB= L L U U L L U U L L U U L L U U Pol. = RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP BBC = 2 1 2 1 4 3 4 3 6 5 6 5 8 7 8 7 BBC SB= L L U U L L U U L L U U L L U U IF = 2N 1N 2N 1N 2N 1N 2N 1N 2N 1N 2N 1N 2N 1N 2N 1N The following frequency sets based on these setups were used. Frequency Set: 4 Setup file default. LO sum= 22187.49 22187.49 22187.49 22187.49 22219.49 22219.49 22219.49 22219.49 22251.49 22251.49 22251.49 22251.49 22283.49 22283.49 22283.49 22283.49 BBC fr= 223.49 223.49 223.49 223.49 255.49 255.49 255.49 255.49 287.49 287.49 287.49 287.49 319.49 319.49 319.49 319.49 Bandwd= 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 Matching frequency sets: 4 Track assignments are: track1= 2, 10, 18, 26, 3, 11, 19, 27, 66, 74, 82, 90, 67, 75, 83, 91 barrel=roll_off SOURCES USED IN RECORDING SCANS -- Network Monitoring Experiment Catalog positions marked with *. Precession of date coordinates is based on stop time of first scan. Names used in schedule marked with *. Short names used in VLA and SNAP files marked with +. Observation date used in B1950/J2000 coordinate conversion (PRECDATE): 1979.900 No adjustments are made for rates (DRA, DDEC). Scan hours are for recording scans only. Baseline hours are only counted for scans above horizon at both ends. Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) J0841+7053 08 36 21.556645 * 08 41 24.365283 08 42 46.538282 0.31 * 0836+710 71 04 22.42740 * 70 53 42.17302 70 50 19.75249 0.10 J0841+70 /aps3/sched10.2/catalogs/sources.vlba rfc_2012b Petrov, 2012, unpublished 4322 observations 0.458 scan and 64.816 baseline hours in setup: sess313.K1024 Frequency sets (dups not shown): 1 2 3 4 5 6 7 8 9 10 12 13 15 18 19 J0854+2006 08 51 57.250618 * 08 54 48.874930 08 55 36.298664 0.11 0851+202 20 17 58.41733 * 20 06 30.64078 20 03 12.42132 0.10 J0854+20 /aps3/sched10.2/catalogs/sources.vlba * OJ287 rfc_2012b Petrov, 2012, unpublished 191510 observations 0.333 scan and 57.000 baseline hours in setup: sess313.K1024 Frequency sets (dups not shown): 1 2 3 4 5 6 7 8 9 10 12 13 14 15 18 19 * J0916+3854 09 13 39.517576 * 09 16 48.904600 09 17 40.826977 0.20 0913+391 39 07 02.11851 * 38 54 28.14666 38 50 45.86659 0.23 J0916+38 /aps3/sched10.2/catalogs/sources.vlba rfc_2012b Petrov, 2012, unpublished 84 observations 0.483 scan and 75.450 baseline hours in setup: sess313.K1024 Frequency sets (dups not shown): 1 2 3 4 5 6 7 8 9 10 12 13 14 15 18 19 J0927+3902 09 23 55.319217 * 09 27 03.013938 09 27 54.380190 0.13 0923+392 39 15 23.56637 * 39 02 20.85177 38 58 31.03918 0.10 * 4C39.25 /aps3/sched10.2/catalogs/sources.vlba J0927+39 rfc_2012b Petrov, 2012, unpublished 239566 observations 0.733 scan and 116.677 baseline hours in setup: sess313.K1024 Frequency sets (dups not shown): 1 2 3 4 5 6 7 8 9 10 12 13 14 15 18 19 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) 0836+710 92.9 OJ287 73.3 J0916+3854 75.5 4C39.25 73.8 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