COVER INFORMATION Station: MC_DBBC (Code Md ) Experiment: Network Monitoring Experiment Exp. Code: N14K1 Schedule Version: 2.00 Processed by SCHED version: 10.20 Release of about July 12, 2012 PI: Ciriaco Goddi Address: JIVE Postbus 2 7990 AA Dwingeloo The Netherlands Phone: +31-521-596548 EMAIL: goddi@jive.nl Fax: Phone during observation: +31-521-596548 Observing mode: Notes: 1.3 cm NME for session 1/2014 1 Gbps, 2-bit sampling, 16 MHz filters Send the disk pack by express to JIVE COVER LETTER: Dear EVN friends, This is the schedule for the 1.3cm NME on March 11 2014, involving 16 EVN antennas: Eb Jb2 On20 Mc Nt Tr Sv Zc Bd Ur Sh Sh65 Hh Ys Mh Sr, plus the KVN stations KVNYS KVNUS KVNTN. Stations testing their new DBBC backends are also included: MC_DBBC (Md), TR_DBBC (Td), and YS_DBBC (Yd). The NME uses a setup with 1 Gbps and consists of integrations on the VLBI fringe finder DA193 (~1.8Jy at 22 GHz) as well as phase-referencing cycles between continuum calibrators (1st phase-reference cycle: J2040+4527 -- J2039+4159; 2nd phase-reference cycle: DA193 -- J0605+4030). There are three ftp fringe-test scans (1) 14:09:00 UT (scan 2, 2 sec, DA193) (2) 15:31:00 UT (scan 38, 2 sec, DA193) (3) 16:29:00 UT (scan 69, 2 sec, DA193) See you on Skype group chat and Good luck with the session! Ciriaco Skype account: ciriaco.goddi Schedule for MC_DBBC (Code Md ) 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 ---------------------------------------------------------------------------------------- --- Tue 11 Mar 2014 Day 70 --- 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 14 00 00 DA193 02 03 12 47.4 435.1 -3.9 -63.8 0 0 14 00 00 14 04 00 --- 02 07 13 48.1 435.6 -3.8 -64.0 240 31 14 00 01 14 06 00 DA193 02 09 13 48.5 435.9 -3.8 -64.2 117 31 14 06 00 14 10 00 --- 02 13 14 49.2 436.4 -3.7 -64.4 240 62 14 06 01 14 12 00 DA193 02 15 14 49.5 436.6 -3.7 -64.6 117 62 14 12 00 14 13 00 --- 02 16 14 49.7 436.8 -3.7 -64.6 60 70 14 12 01 14 22 00 J2040+4527 02 25 16 32.3 304.2 5.7 57.3 358 70 14 22 00 14 23 00 =2039+452 02 26 16 32.2 304.3 5.7 57.2 60 77 14 22 01 14 23 40 J2039+4159 02 26 56 29.9 301.2 5.8 55.2 31 77 14 23 40 14 24 40 --- 02 27 56 29.8 301.3 5.8 55.1 60 85 14 23 41 14 25 20 J2040+4527 02 28 36 31.9 304.5 5.8 56.9 31 85 14 25 20 14 26 20 =2039+452 02 29 36 31.7 304.6 5.8 56.8 60 93 14 25 21 14 27 00 J2039+4159 02 30 16 29.4 301.6 5.8 54.9 31 93 14 27 00 14 28 00 --- 02 31 17 29.3 301.7 5.9 54.8 60 101 14 27 01 14 28 40 J2040+4527 02 31 57 31.4 304.9 5.8 56.5 31 101 14 28 40 14 29 40 =2039+452 02 32 57 31.2 305.0 5.9 56.4 60 108 14 28 41 14 30 20 J2039+4159 02 33 37 28.9 302.0 5.9 54.5 31 108 14 30 20 14 31 20 --- 02 34 37 28.8 302.1 5.9 54.4 60 116 14 30 21 14 32 00 J2040+4527 02 35 17 30.9 305.3 5.9 56.1 31 116 14 32 00 14 33 00 =2039+452 02 36 17 30.7 305.4 5.9 56.0 60 124 14 32 01 14 33 40 J2039+4159 02 36 58 28.4 302.4 6.0 54.1 31 124 14 33 40 14 34 40 --- 02 37 58 28.3 302.5 6.0 54.0 60 132 14 33 41 14 35 20 J2040+4527 02 38 38 30.4 305.7 6.0 55.7 31 132 14 35 20 14 36 20 =2039+452 02 39 38 30.2 305.8 6.0 55.6 60 139 14 35 21 14 37 00 J2039+4159 02 40 18 27.9 302.8 6.0 53.8 31 139 14 37 00 14 38 00 --- 02 41 18 27.8 303.0 6.0 53.7 60 147 14 37 01 Schedule for MC_DBBC (Code Md ) 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 ---------------------------------------------------------------------------------------- --- Tue 11 Mar 2014 Day 70 --- 14 38 40 J2040+4527 02 41 58 29.9 306.0 6.0 55.3 31 147 14 38 40 14 39 40 =2039+452 02 42 59 29.8 306.2 6.0 55.2 60 155 14 38 41 14 40 20 J2039+4159 02 43 39 27.4 303.2 6.1 53.4 31 155 14 40 20 14 41 20 --- 02 44 39 27.3 303.4 6.1 53.3 60 163 14 40 21 14 42 00 J2040+4527 02 45 19 29.4 306.4 6.1 54.9 31 163 14 42 00 14 43 00 =2039+452 02 46 19 29.3 306.5 6.1 54.8 60 170 14 42 01 14 43 40 J2039+4159 02 46 59 26.9 303.7 6.1 53.0 31 170 14 43 40 14 44 40 --- 02 47 59 26.8 303.8 6.1 52.9 60 178 14 43 41 14 45 20 J2040+4527 02 48 39 29.0 306.8 6.1 54.5 31 178 14 45 20 14 46 20 =2039+452 02 49 40 28.8 306.9 6.1 54.4 60 186 14 45 21 14 47 00 J2039+4159 02 50 20 26.4 304.1 6.2 52.7 31 186 14 47 00 14 48 00 --- 02 51 20 26.3 304.2 6.2 52.6 60 194 14 47 01 14 48 40 J2040+4527 02 52 00 28.5 307.2 6.2 54.1 31 194 14 48 40 14 49 40 =2039+452 02 53 00 28.3 307.3 6.2 54.0 60 201 14 48 41 14 50 20 J2039+4159 02 53 40 25.9 304.5 6.2 52.3 31 201 14 50 20 14 51 20 --- 02 54 40 25.8 304.6 6.3 52.2 60 209 14 50 21 14 52 00 J2040+4527 02 55 21 28.0 307.6 6.2 53.7 31 209 14 52 00 14 53 00 =2039+452 02 56 21 27.9 307.7 6.3 53.6 60 217 14 52 01 14 53 40 J2039+4159 02 57 01 25.4 304.9 6.3 51.9 31 217 14 53 40 14 54 40 --- 02 58 01 25.3 305.1 6.3 51.8 60 225 14 53 41 14 55 20 J2040+4527 02 58 41 27.5 308.0 6.3 53.3 31 225 14 55 20 14 56 20 =2039+452 02 59 41 27.4 308.1 6.3 53.2 60 232 14 55 21 14 57 00 J2039+4159 03 00 21 24.9 305.3 6.3 51.5 31 232 14 57 00 14 58 00 --- 03 01 22 24.8 305.5 6.4 51.4 60 240 14 57 01 14 58 40 J2040+4527 03 02 02 27.1 308.4 6.3 52.9 31 240 14 58 40 14 59 40 =2039+452 03 03 02 26.9 308.5 6.4 52.8 60 248 14 58 41 15 00 20 J2039+4159 03 03 42 24.5 305.8 6.4 51.2 31 248 15 00 20 15 01 20 --- 03 04 42 24.3 305.9 6.4 51.0 60 255 15 00 21 15 02 00 J2040+4527 03 05 22 26.6 308.8 6.4 52.5 31 255 15 02 00 15 03 00 =2039+452 03 06 22 26.5 308.9 6.4 52.3 60 263 15 02 01 Schedule for MC_DBBC (Code Md ) 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 ---------------------------------------------------------------------------------------- --- Tue 11 Mar 2014 Day 70 --- 15 03 40 J2039+4159 03 07 02 24.0 306.2 6.5 50.8 31 263 15 03 40 15 04 40 --- 03 08 03 23.8 306.3 6.5 50.7 60 271 15 03 41 15 05 20 J2040+4527 03 08 43 26.1 309.2 6.5 52.0 31 271 15 05 20 15 06 20 =2039+452 03 09 43 26.0 309.3 6.5 51.9 60 279 15 05 21 15 07 00 J2039+4159 03 10 23 23.5 306.6 6.5 50.4 31 279 15 07 00 15 08 00 --- 03 11 23 23.4 306.8 6.5 50.3 60 286 15 07 01 15 08 40 J2040+4527 03 12 03 25.7 309.6 6.5 51.6 31 286 15 08 40 15 09 40 =2039+452 03 13 03 25.5 309.7 6.5 51.5 60 294 15 08 41 15 10 20 J2039+4159 03 13 44 23.0 307.1 6.6 50.0 31 294 15 10 20 15 11 20 --- 03 14 44 22.9 307.2 6.6 49.9 60 302 15 10 21 15 12 00 J2040+4527 03 15 24 25.2 310.0 6.6 51.2 31 302 15 12 00 15 13 00 =2039+452 03 16 24 25.1 310.1 6.6 51.1 60 310 15 12 01 15 13 40 J2039+4159 03 17 04 22.5 307.5 6.6 49.6 30 310 15 13 40 15 14 40 --- 03 18 04 22.4 307.6 6.6 49.5 60 317 15 13 41 15 15 20 J2040+4527 03 18 44 24.8 310.4 6.6 50.8 31 317 15 15 20 15 16 20 =2039+452 03 19 45 24.6 310.5 6.6 50.7 60 325 15 15 21 15 25 00 DA193 03 28 26 62.4 446.7 -2.5 -67.9 336 325 15 25 00 15 26 00 --- 03 29 26 62.6 446.9 -2.5 -68.0 60 333 15 25 01 15 28 00 DA193 03 31 26 62.9 447.2 -2.4 -68.0 117 333 15 28 00 15 32 00 --- 03 35 27 63.7 447.8 -2.4 -68.1 240 364 15 28 01 15 34 00 DA193 03 37 27 64.0 448.2 -2.3 -68.1 117 364 15 34 00 15 35 00 --- 03 38 28 64.2 448.3 -2.3 -68.1 60 372 15 34 01 15 35 40 DA193 03 39 08 64.3 448.4 -2.3 -68.1 37 372 15 35 40 15 36 40 --- 03 40 08 64.5 448.6 -2.3 -68.1 60 379 15 35 41 15 37 20 J0605+4030 03 40 48 63.0 445.6 -2.4 -69.2 32 379 15 37 20 15 38 20 =0602+405 03 41 48 63.2 445.8 -2.4 -69.2 60 387 15 37 21 15 39 00 DA193 03 42 28 64.9 449.0 -2.2 -68.1 32 387 15 39 00 15 40 00 --- 03 43 28 65.1 449.2 -2.2 -68.1 60 395 15 39 01 15 40 40 J0605+4030 03 44 09 63.6 446.1 -2.4 -69.3 32 395 15 40 40 15 41 40 =0602+405 03 45 09 63.8 446.3 -2.4 -69.3 60 403 15 40 41 Schedule for MC_DBBC (Code Md ) 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 ---------------------------------------------------------------------------------------- --- Tue 11 Mar 2014 Day 70 --- 15 42 20 DA193 03 45 49 65.5 449.6 -2.2 -68.2 32 403 15 42 20 15 43 20 --- 03 46 49 65.7 449.7 -2.2 -68.2 60 410 15 42 21 15 44 00 J0605+4030 03 47 29 64.2 446.6 -2.3 -69.4 32 410 15 44 00 15 45 00 =0602+405 03 48 29 64.4 446.8 -2.3 -69.4 60 418 15 44 01 15 45 40 DA193 03 49 09 66.1 450.1 -2.1 -68.2 32 418 15 45 40 15 46 40 --- 03 50 10 66.3 450.3 -2.1 -68.2 60 426 15 45 41 15 47 20 J0605+4030 03 50 50 64.8 447.2 -2.3 -69.5 32 426 15 47 20 15 48 20 =0602+405 03 51 50 65.0 447.3 -2.3 -69.5 60 434 15 47 21 15 49 00 DA193 03 52 30 66.7 450.7 -2.1 -68.2 32 434 15 49 00 15 50 00 --- 03 53 30 66.9 450.9 -2.1 -68.1 60 441 15 49 01 15 50 40 J0605+4030 03 54 10 65.4 447.7 -2.2 -69.5 32 441 15 50 40 15 51 40 =0602+405 03 55 10 65.6 447.9 -2.2 -69.6 60 449 15 50 41 15 52 20 DA193 03 55 50 67.3 451.3 -2.0 -68.1 32 449 15 52 20 15 53 20 --- 03 56 51 67.5 451.5 -2.0 -68.1 60 457 15 52 21 15 54 00 J0605+4030 03 57 31 66.0 448.2 -2.2 -69.6 32 457 15 54 00 15 55 00 =0602+405 03 58 31 66.2 448.4 -2.1 -69.6 60 464 15 54 01 15 55 40 DA193 03 59 11 67.9 452.0 -2.0 -68.1 31 464 15 55 40 15 56 40 --- 04 00 11 68.1 452.2 -1.9 -68.1 60 472 15 55 41 15 57 20 J0605+4030 04 00 51 66.6 448.8 -2.1 -69.6 31 472 15 57 20 15 58 20 =0602+405 04 01 51 66.8 448.9 -2.1 -69.6 60 480 15 57 21 15 59 00 DA193 04 02 32 68.5 452.6 -1.9 -68.0 31 480 15 59 00 16 00 00 --- 04 03 32 68.7 452.8 -1.9 -68.0 60 488 15 59 01 16 00 40 J0605+4030 04 04 12 67.2 449.3 -2.0 -69.7 31 488 16 00 40 16 01 40 =0602+405 04 05 12 67.4 449.5 -2.0 -69.7 60 495 16 00 41 16 02 20 DA193 04 05 52 69.1 453.3 -1.8 -67.9 31 495 16 02 20 16 03 20 --- 04 06 52 69.2 453.5 -1.8 -67.9 60 503 16 02 21 16 04 00 J0605+4030 04 07 32 67.8 449.9 -2.0 -69.7 31 503 16 04 00 16 05 00 =0602+405 04 08 33 68.0 450.1 -2.0 -69.7 60 511 16 04 01 16 05 40 DA193 04 09 13 69.7 454.0 -1.8 -67.8 31 511 16 05 40 16 06 40 --- 04 10 13 69.8 454.2 -1.8 -67.8 60 519 16 05 41 Schedule for MC_DBBC (Code Md ) 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 ---------------------------------------------------------------------------------------- --- Tue 11 Mar 2014 Day 70 --- 16 07 20 J0605+4030 04 10 53 68.4 450.5 -1.9 -69.7 31 519 16 07 20 16 08 20 =0602+405 04 11 53 68.5 450.7 -1.9 -69.6 60 526 16 07 21 16 09 00 DA193 04 12 33 70.3 454.7 -1.7 -67.7 31 526 16 09 00 16 10 00 --- 04 13 33 70.4 454.9 -1.7 -67.6 60 534 16 09 01 16 10 40 J0605+4030 04 14 13 69.0 451.1 -1.9 -69.6 31 534 16 10 40 16 11 40 =0602+405 04 15 14 69.1 451.3 -1.9 -69.6 60 542 16 10 41 16 12 20 DA193 04 15 54 70.9 455.4 -1.7 -67.5 31 542 16 12 20 16 13 20 --- 04 16 54 71.0 455.6 -1.7 -67.5 60 550 16 12 21 16 14 00 J0605+4030 04 17 34 69.6 451.7 -1.8 -69.6 31 550 16 14 00 16 15 00 =0602+405 04 18 34 69.7 451.9 -1.8 -69.6 60 557 16 14 01 16 15 40 DA193 04 19 14 71.4 456.2 -1.6 -67.3 31 557 16 15 40 16 16 40 --- 04 20 14 71.6 456.4 -1.6 -67.3 60 565 16 15 41 16 17 20 J0605+4030 04 20 55 70.2 452.4 -1.8 -69.5 31 565 16 17 20 16 18 20 =0602+405 04 21 55 70.3 452.6 -1.7 -69.5 60 573 16 17 21 16 19 00 DA193 04 22 35 72.0 457.0 -1.6 -67.1 30 573 16 19 00 16 20 00 --- 04 23 35 72.2 457.2 -1.5 -67.1 60 581 16 19 01 16 20 40 J0605+4030 04 24 15 70.8 453.1 -1.7 -69.4 30 581 16 20 40 16 21 40 =0602+405 04 25 15 70.9 453.3 -1.7 -69.4 60 588 16 20 41 16 23 40 DA193 04 27 16 72.9 458.1 -1.5 -66.8 110 588 16 23 40 16 24 40 --- 04 28 16 73.0 458.4 -1.5 -66.7 60 596 16 23 41 16 26 00 DA193 04 29 36 73.3 458.7 -1.4 -66.6 77 596 16 26 00 16 30 00 --- 04 33 37 74.0 459.8 -1.4 -66.1 240 627 16 26 01 16 32 00 DA193 04 35 37 74.3 460.4 -1.3 -65.9 117 627 16 32 00 16 40 00 --- 04 43 38 75.7 462.9 -1.2 -64.8 480 689 16 32 01 16 42 00 DA193 04 45 39 76.1 463.6 -1.2 -64.5 117 689 16 42 00 16 50 00 --- 04 53 40 77.5 466.6 -1.0 -62.8 480 751 16 42 01 16 52 00 DA193 04 55 40 77.8 467.4 -1.0 -62.3 117 751 16 52 00 17 00 00 --- 05 03 42 79.2 471.1 -0.9 -60.0 480 813 16 52 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess114.K1024 --- WARNING --- This group does not match an entry in the frequency catalog. This might be ok because the catalog is not complete. But be very careful to be sure that the setup is correct. Setup group: 15 Station: MC_DBBC Total bit rate: 1024 Format: MARK5B Bits per sample: 2 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 = 1 5 1 5 2 6 2 6 3 7 3 7 4 8 4 8 BBC SB= L L U U L L U U L L U U L L U U IF = A1 B1 A1 B1 A1 B1 A1 B1 A1 B1 A1 B1 A1 B1 A1 B1 The following frequency sets based on these setups were used. Frequency Set: 16 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: 16 20 Track assignments are: track1= 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32 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) * J2039+4159 20 37 18.148706 * 20 39 05.710000 20 39 35.612228 0.00 41 49 02.37998 * 41 59 40.40000 42 02 36.74521 0.00 From catalog imbedded in main SCHED input file. 0.267 scan and 21.900 baseline hours in setup: sess114.K1024 Frequency sets (dups not shown): 1 2 3 4 5 6 7 14 15 16 21 22 J0555+3948 05 52 01.407174 * 05 55 30.805616 05 56 31.341888 0.13 0552+398 39 48 21.94578 * 39 48 49.16493 39 48 52.48027 0.10 * DA193 /aps3/sched10.2/catalogs/sources.vlba J0555+39 rfc_2012b Petrov, 2012, unpublished 376994 observations 0.967 scan and 206.150 baseline hours in setup: sess114.K1024 Frequency sets (dups not shown): 1 2 3 4 5 6 7 10 11 13 14 15 16 17 21 22 * J0605+4030 06 02 20.058852 * 06 05 50.855372 06 06 51.839612 0.15 0602+405 40 30 26.00787 * 40 30 08.10354 40 29 58.54527 0.12 /aps3/sched10.2/catalogs/sources.vlba rfc_2012b Petrov, 2012, unpublished 326 observations 0.233 scan and 49.000 baseline hours in setup: sess114.K1024 Frequency sets (dups not shown): 1 2 3 4 5 6 7 10 11 13 14 15 16 17 21 22 * J2040+4527 20 39 06.383159 * 20 40 48.333100 20 41 16.571449 0.46 2039+452 45 16 33.23001 * 45 27 17.14599 45 30 14.98033 0.54 /aps3/sched10.2/catalogs/sources.vlba rfc_2012b Petrov, 2012, unpublished 77 observations 0.283 scan and 25.524 baseline hours in setup: sess114.K1024 Frequency sets (dups not shown): 1 2 3 4 5 6 7 14 15 16 21 22 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) J2039+4159 59.3 DA193 98.0 J0605+4030 99.9 J2040+4527 61.3 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