COVER INFORMATION Station: CAMBG32M (Code Cm ) Experiment: Snapshot Ionospheric Testing Observations Exp. Code: N05L3 Schedule Version: 1.02 Processed by SCHED version: 6.01 Release: Late March 2005 PI: James M Anderson Address: Joint Institute for VLBI in Europe Oude Hoogeveensedijk 4 7991 PD Dwingeloo The Netherlands Phone: +31 (0)521 596 542 EMAIL: anderson@jive.nl Fax: +31 (0)521 596 539 Phone during observation: +31 (0)521 596 500 Observing mode: Snapshot observations of sources at 18cm (256 Mb/s) Notes: ALBUS Ionospheric modeling test observations Phase referencing is too fast for JODRELL1 All targets are strong Schedule for CAMBG32M (Code Cm ) Page 2 Snapshot Ionospheric Testing Observations UP: D => Below limits; H => Below horizon mask. blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Tapes: Drive, Index, Start footage / Direction, Head Group, End footage. TPStart: Tape motion start time. Frequencies are LO sum (band edge). ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) ---------------------------------------------------------------------------------------- --- Mon 6 Jun 2005 Day 157 --- Next scan frequencies: 1637.99 1637.99 1645.99 1645.99 1653.99 1653.99 1661.99 1661.99 Next BBC frequencies: 527.99 527.99 535.99 535.99 543.99 543.99 551.99 551.99 Next scan bandwidths: 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 23 00 00 J1323+7942 16 01 57 59.5 347.0 2.6 129.8 0 1 1 0 23 00 00 23 02 00 =1323+799 16 03 58 59.4 346.9 2.7 129.2 120 F 1 0 23 02 00 J1139+7654 16 03 58 55.7 338.4 4.4 96.6 -46 1 1 0 23 02 00 23 04 00 =1136+771 16 05 58 55.6 338.4 4.4 96.1 74 F 1 0 23 04 00 J1323+7942 16 05 58 59.4 346.8 2.7 128.6 -46 1 1 0 23 04 00 23 06 00 =1323+799 16 07 58 59.3 346.7 2.7 128.0 74 F 1 0 23 06 00 J1139+7654 16 07 58 55.5 338.4 4.5 95.5 -46 1 1 0 23 06 00 23 08 00 =1136+771 16 09 58 55.3 338.4 4.5 95.0 74 F 1 0 23 08 00 J1323+7942 16 09 58 59.2 346.6 2.8 127.4 -46 1 1 0 23 08 00 23 10 00 =1323+799 16 11 59 59.2 346.5 2.8 126.8 74 F 1 0 23 10 00 J1139+7654 16 11 59 55.2 338.4 4.5 94.5 -45 1 1 0 23 10 00 23 12 00 =1136+771 16 13 59 55.1 338.3 4.6 94.0 75 F 1 0 23 13 00 J1323+7942 16 14 59 59.1 346.3 2.8 125.9 15 1 1 0 23 13 00 23 14 00 =1323+799 16 15 59 59.0 346.3 2.9 125.7 60 F 1 0 23 14 00 J1406+7828 16 15 59 61.4 347.1 2.2 136.8 -30 1 1 0 23 14 00 23 15 40 =1406+787 16 17 40 61.3 347.0 2.2 136.3 70 F 1 0 23 15 40 J1323+7942 16 17 40 59.0 346.2 2.9 125.2 -30 1 1 0 23 15 40 23 17 20 =1323+799 16 19 20 58.9 346.1 2.9 124.7 70 F 1 0 23 17 20 J1406+7828 16 19 20 61.2 346.8 2.2 135.8 -30 1 1 0 23 17 20 23 19 00 =1406+787 16 21 00 61.2 346.7 2.2 135.3 70 F 1 0 23 19 00 J1323+7942 16 21 00 58.8 346.0 2.9 124.2 -30 1 1 0 23 19 00 23 20 40 =1323+799 16 22 41 58.8 346.0 3.0 123.7 70 F 1 0 23 20 40 J1406+7828 16 22 41 61.1 346.6 2.3 134.8 -30 1 1 0 23 20 40 23 22 20 =1406+787 16 24 21 61.1 346.5 2.3 134.2 70 F 1 0 Schedule for CAMBG32M (Code Cm ) Page 3 Snapshot Ionospheric Testing Observations UP: D => Below limits; H => Below horizon mask. blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Tapes: Drive, Index, Start footage / Direction, Head Group, End footage. TPStart: Tape motion start time. Frequencies are LO sum (band edge). ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) ---------------------------------------------------------------------------------------- --- Mon 6 Jun 2005 Day 157 --- 23 22 20 J1323+7942 16 24 21 58.7 345.9 3.0 123.2 -30 1 1 0 23 22 20 23 24 00 =1323+799 16 26 01 58.6 345.8 3.0 122.8 70 F 1 0 23 24 00 J1357+7643 16 26 01 61.8 343.0 2.5 128.6 -34 1 1 0 23 24 00 23 25 40 =1357+769 16 27 41 61.7 342.8 2.5 128.1 66 F 1 0 23 25 40 J1323+7942 16 27 41 58.6 345.7 3.1 122.3 -34 1 1 0 23 25 40 23 27 20 =1323+799 16 29 22 58.5 345.6 3.1 121.8 66 F 1 0 23 27 20 J1357+7643 16 29 22 61.7 342.7 2.5 127.6 -34 1 1 0 23 27 20 23 29 00 =1357+769 16 31 02 61.6 342.6 2.5 127.1 66 F 1 0 23 29 00 J1323+7942 16 31 02 58.5 345.6 3.1 121.3 -34 1 1 0 23 29 00 23 30 40 =1323+799 16 32 42 58.4 345.5 3.1 120.9 66 F 1 0 23 30 40 J1357+7643 16 32 42 61.5 342.5 2.6 126.6 -33 1 1 0 23 30 40 23 32 20 =1357+769 16 34 22 61.4 342.4 2.6 126.1 67 F 1 0 23 32 20 J1323+7942 16 34 22 58.3 345.4 3.2 120.4 -33 1 1 0 23 32 20 23 34 00 =1323+799 16 36 03 58.3 345.4 3.2 119.9 67 F 1 0 23 40 00 J1745+1720 16 42 04 53.0 514.2 -1.1 -16.2 71 1 1 0 23 40 00 23 44 00 =1743+173 16 46 04 53.2 515.7 -1.0 -15.3 240 F 1 0 23 44 00 J1752+1734 16 46 04 53.0 512.9 -1.1 -17.1 -31 1 1 0 23 44 00 23 45 40 =1750+175 16 47 45 53.1 513.5 -1.1 -16.7 69 F 1 0 23 45 40 J1745+1720 16 47 45 53.3 516.4 -1.0 -14.9 -31 1 1 0 23 45 40 23 47 20 =1743+173 16 49 25 53.4 517.0 -0.9 -14.5 69 F 1 0 23 47 20 J1752+1734 16 49 25 53.2 514.1 -1.1 -16.3 -31 1 1 0 23 47 20 23 49 00 =1750+175 16 51 05 53.3 514.8 -1.0 -15.9 69 F 1 0 23 49 00 J1745+1720 16 51 05 53.5 517.7 -0.9 -14.1 -31 1 1 0 23 49 00 23 50 40 =1743+173 16 52 46 53.6 518.3 -0.9 -13.7 69 F 1 0 23 50 40 J1752+1734 16 52 46 53.4 515.4 -1.0 -15.5 -31 1 1 0 23 50 40 23 52 20 =1750+175 16 54 26 53.5 516.1 -1.0 -15.1 69 F 1 0 23 53 20 J1745+1720 16 55 26 53.8 519.4 -0.8 -13.1 27 1 1 0 23 53 20 23 54 00 =1743+173 16 56 06 53.8 519.6 -0.8 -12.9 40 F 1 0 23 54 00 J1756+1535 16 56 06 51.5 516.0 -1.0 -15.0 -34 1 1 0 23 54 00 23 55 40 --- 16 57 46 51.6 516.6 -1.0 -14.6 66 F 1 0 Schedule for CAMBG32M (Code Cm ) Page 4 Snapshot Ionospheric Testing Observations UP: D => Below limits; H => Below horizon mask. blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Tapes: Drive, Index, Start footage / Direction, Head Group, End footage. TPStart: Tape motion start time. Frequencies are LO sum (band edge). ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) ---------------------------------------------------------------------------------------- --- Mon 6 Jun 2005 Day 157 --- 23 55 40 J1745+1720 16 57 46 53.9 520.3 -0.8 -12.5 -34 1 1 0 23 55 40 23 57 20 =1743+173 16 59 27 54.0 520.9 -0.8 -12.1 66 F 1 0 23 57 20 J1756+1535 16 59 27 51.7 517.2 -1.0 -14.3 -34 1 1 0 23 57 20 23 59 00 --- 17 01 07 51.8 517.9 -0.9 -13.9 66 F 1 0 --- Start: Mon 6 Jun 2005 Day 157 -- Stop: Tue 7 Jun 2005 Day 158 --- 23 59 00 J1745+1720 17 01 07 54.1 521.6 -0.7 -11.7 -34 1 1 0 23 59 00 00 00 40 =1743+173 17 02 47 54.1 522.3 -0.7 -11.3 66 F 1 0 00 00 40 J1756+1535 17 02 47 51.9 518.5 -0.9 -13.5 -34 1 1 0 00 00 40 00 02 20 --- 17 04 27 51.9 519.1 -0.9 -13.1 66 F 1 0 00 02 20 J1745+1720 17 04 27 54.2 522.9 -0.7 -10.9 -34 1 1 0 00 02 20 00 04 00 =1743+173 17 06 08 54.3 523.6 -0.7 -10.4 66 F 1 0 00 04 00 J1719+1745 17 06 08 55.5 534.4 -0.2 -3.6 -51 1 1 0 00 04 00 00 05 40 =1717+178 17 07 48 55.5 535.1 -0.2 -3.2 49 F 1 0 00 05 40 J1745+1720 17 07 48 54.4 524.3 -0.6 -10.0 -51 1 1 0 00 05 40 00 07 20 =1743+173 17 09 28 54.4 525.0 -0.6 -9.6 49 F 1 0 00 07 20 J1719+1745 17 09 28 55.5 535.8 -0.2 -2.7 -51 1 1 0 00 07 20 00 09 00 =1717+178 17 11 09 55.5 536.5 -0.1 -2.3 49 F 1 0 00 09 00 J1745+1720 17 11 09 54.5 525.6 -0.6 -9.2 -51 1 1 0 00 09 00 00 10 40 =1743+173 17 12 49 54.6 526.3 -0.6 -8.7 49 F 1 0 00 10 40 J1719+1745 17 12 49 55.6 537.2 -0.1 -1.8 -51 1 1 0 00 10 40 00 12 20 =1717+178 17 14 29 55.6 537.9 -0.1 -1.4 49 F 1 0 00 12 20 J1745+1720 17 14 29 54.6 527.0 -0.5 -8.3 -51 1 1 0 00 12 20 00 14 00 =1743+173 17 16 09 54.7 527.7 -0.5 -7.9 49 F 1 0 00 17 00 J2148+0657 17 19 10 19.3 464.0 -4.5 -36.8 49 1 1 0 00 17 00 00 26 00 =2145+067 17 28 11 20.7 465.9 -4.3 -36.5 540 F 1 0 00 29 00 J2129-1538 17 31 12 5.0 483.5 -4.0 -32.1 108 1 1 0 00 29 00 00 30 00 =2126-158 17 32 12 5.1 483.7 -4.0 -32.0 60 F 1 0 00 30 00 J2129-1821 17 32 12 2.8 485.1 -4.0 -31.9 -30 1 1 0 00 30 00 00 31 40 =2126-185 17 33 52 3.0 485.5 -3.9 -31.7 70 F 1 0 Schedule for CAMBG32M (Code Cm ) Page 5 Snapshot Ionospheric Testing Observations UP: D => Below limits; H => Below horizon mask. blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Tapes: Drive, Index, Start footage / Direction, Head Group, End footage. TPStart: Tape motion start time. Frequencies are LO sum (band edge). ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) ---------------------------------------------------------------------------------------- --- Tue 7 Jun 2005 Day 158 --- 00 31 40 J2129-1538 17 33 52 5.3 484.1 -3.9 -31.8 -30 1 1 0 00 31 40 00 33 20 =2126-158 17 35 33 5.5 484.4 -3.9 -31.7 70 F 1 0 00 33 20 J2129-1821 17 35 33 3.2 485.8 -3.9 -31.6 -30 1 1 0 00 33 20 00 35 00 =2126-185 17 37 13 3.4 486.2 -3.9 -31.4 70 F 1 0 00 35 00 J2129-1538 17 37 13 5.7 484.8 -3.9 -31.5 -30 1 1 0 00 35 00 00 36 40 =2126-158 17 38 53 5.9 485.1 -3.8 -31.4 70 F 1 0 00 36 40 J2129-1821 17 38 53 3.6 486.5 -3.8 -31.3 -30 1 1 0 00 36 40 00 38 20 =2126-185 17 40 33 3.8 486.8 -3.8 -31.1 70 F 1 0 00 38 20 J2129-1538 17 40 33 6.1 485.5 -3.8 -31.2 -30 1 1 0 00 38 20 00 40 00 =2126-158 17 42 14 6.3 485.8 -3.8 -31.1 70 F 1 0 00 40 00 J2130-0927 17 42 14 11.5 482.3 -3.8 -31.7 -40 1 1 0 00 40 00 00 41 40 =2127-096 17 43 54 11.7 482.7 -3.8 -31.6 60 F 1 0 00 41 40 J2129-1538 17 43 54 6.6 486.2 -3.8 -30.9 -40 1 1 0 00 41 40 00 43 20 =2126-158 17 45 34 6.8 486.5 -3.7 -30.8 60 F 1 0 00 43 20 J2130-0927 17 45 34 11.9 483.0 -3.8 -31.4 -40 1 1 0 00 43 20 00 45 00 =2127-096 17 47 14 12.1 483.4 -3.7 -31.3 60 F 1 0 00 45 00 J2129-1538 17 47 14 7.0 486.8 -3.7 -30.6 -40 1 1 0 00 45 00 00 46 40 =2126-158 17 48 55 7.2 487.2 -3.7 -30.5 60 F 1 0 00 46 40 J2130-0927 17 48 55 12.3 483.7 -3.7 -31.1 -40 1 1 0 00 46 40 00 48 20 =2127-096 17 50 35 12.6 484.1 -3.7 -31.0 60 F 1 0 00 49 20 J2129-1538 17 51 35 7.5 487.8 -3.6 -30.2 20 1 1 0 00 49 20 00 50 00 =2126-158 17 52 15 7.6 487.9 -3.6 -30.2 40 F 1 0 00 50 00 J2131-1207 17 52 15 10.3 485.6 -3.7 -30.7 -32 1 1 0 00 50 00 00 51 40 =2128-123 17 53 56 10.5 485.9 -3.6 -30.5 68 F 1 0 00 51 40 J2129-1538 17 53 56 7.8 488.2 -3.6 -30.0 -32 1 1 0 00 51 40 00 53 20 =2126-158 17 55 36 8.0 488.6 -3.6 -29.9 68 F 1 0 00 53 20 J2131-1207 17 55 36 10.7 486.3 -3.6 -30.4 -32 1 1 0 00 53 20 00 55 00 =2128-123 17 57 16 10.9 486.7 -3.6 -30.2 68 F 1 0 00 55 00 J2129-1538 17 57 16 8.2 489.0 -3.5 -29.7 -32 1 1 0 00 55 00 00 56 40 =2126-158 17 58 56 8.4 489.3 -3.5 -29.5 68 F 1 0 Schedule for CAMBG32M (Code Cm ) Page 6 Snapshot Ionospheric Testing Observations UP: D => Below limits; H => Below horizon mask. blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Tapes: Drive, Index, Start footage / Direction, Head Group, End footage. TPStart: Tape motion start time. Frequencies are LO sum (band edge). ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) ---------------------------------------------------------------------------------------- --- Tue 7 Jun 2005 Day 158 --- 00 56 40 J2131-1207 17 58 56 11.2 487.0 -3.5 -30.1 -32 1 1 0 00 56 40 00 58 20 =2128-123 18 00 37 11.4 487.4 -3.5 -29.9 68 F 1 0 00 58 20 J2129-1538 18 00 37 8.6 489.7 -3.5 -29.4 -32 1 1 0 00 58 20 01 00 00 =2126-158 18 02 17 8.8 490.0 -3.5 -29.2 68 F 1 0 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: eo999.18cm Matches group cm18cm in /aps3/sched/catalogs/freq.dat Confirmed by Alastair Gunn 31 Jan 2005 Setup group: 10 Station: CAMBG32M Total bit rate: 256 Format: MKIV1:2 Bits per sample: 2 Sample rate: 16.000 Number of channels: 8 Passes/head pos: 1 Speedup factor: 1.00 1st LO= 1110.00 1110.00 1110.00 1110.00 1110.00 1110.00 1110.00 1110.00 Net SB= U U U U U U U U Pol. = RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 2 3 4 5 6 7 8 BBC SB= U U U U U U U U IF = C A C A C A C A The following frequency sets based on this setup were used. Frequency Set: 10 Setup file default. Used pcal sets: 1 LO sum= 1637.99 1637.99 1645.99 1645.99 1653.99 1653.99 1661.99 1661.99 BBC fr= 527.99 527.99 535.99 535.99 543.99 543.99 551.99 551.99 Bandwd= 8.000 8.000 8.000 8.000 8.000 8.000 8.000 8.000 The following pulse cal sets were used with this setup: Pulse cal detection set: 1 PCAL = 1MHZ PCALXB1= S1 S3 S5 S7 S1 S3 S5 S7 PCALXB2= S2 S4 S6 S8 S2 S4 S6 S8 PCALFR1= 10 10 10 10 6010 6010 6010 6010 PCALFR2= 10 10 10 10 6010 6010 6010 6010 Track assignments are: track1= 2, 10, 18, 26, 3, 11, 19, 27 barrel=roll_off SOURCE LIST -- Snapshot Ionospheric Testing Observations 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) * J1139+7654 11 36 50.402483 * 11 39 51.538717 11 40 13.600280 1.47 1136+771 77 11 09.68453 * 76 54 32.34642 76 53 06.06924 0.65 /aps3/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.100 scan hours, 1.894 baseline hours above horizon. * J1323+7942 13 23 30.967861 * 13 23 51.569831 13 24 00.836917 2.82 1323+799 79 58 27.57995 * 79 42 51.84705 79 41 25.76771 0.44 J1323+79 /aps3/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.283 scan hours, 8.751 baseline hours above horizon. * J1357+7643 13 57 42.117003 * 13 57 55.371534 13 58 02.806741 0.87 1357+769 76 57 53.35424 * 76 43 21.05104 76 41 58.55255 0.40 J1357+76 /aps3/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.083 scan hours, 2.185 baseline hours above horizon. * J1406+7828 14 06 56.652670 * 14 06 36.566944 14 06 41.585608 3.71 1406+787 78 42 22.78156 * 78 28 10.40623 78 26 49.33489 0.63 /aps3/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.083 scan hours, 2.161 baseline hours above horizon. * J1719+1745 17 17 00.324732 * 17 19 13.048481 17 19 28.559864 0.32 1717+178 17 48 08.51599 * 17 45 06.43721 17 44 37.64380 0.22 J1719+17 /aps3/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.083 scan hours, 1.739 baseline hours above horizon. * J1745+1720 17 43 22.235899 * 17 45 35.208167 17 45 50.704699 0.32 1743+173 17 21 09.18647 * 17 20 01.42378 17 19 43.97628 0.22 J1745+17 /aps3/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.300 scan hours, 8.450 baseline hours above horizon. * J1752+1734 17 50 33.364387 * 17 52 46.002901 17 53 01.452521 0.39 1750+175 17 34 56.75224 * 17 34 20.35018 17 34 06.02002 0.56 /aps3/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.083 scan hours, 2.350 baseline hours above horizon. * J1756+1535 17 54 37.953509 * 17 56 53.102132 17 57 08.795390 0.32 15 35 39.32316 * 15 35 20.82657 15 35 08.41956 0.24 /aps3/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.083 scan hours, 2.232 baseline hours above horizon. * J2129-1538 21 26 26.777538 * 21 29 12.175905 21 29 30.394943 0.21 2126-158 -15 51 50.34727 *-15 38 41.04110 -15 37 18.72623 0.30 J2129-15 /aps3/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.250 scan hours, 9.451 baseline hours above horizon. * J2129-1821 21 26 33.897232 * 21 29 21.419113 21 29 39.890466 0.27 2126-185 -18 34 32.47350 *-18 21 22.79035 -18 19 59.57129 0.49 J2129-18 /aps3/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.083 scan hours, 2.231 baseline hours above horizon. * J2130-0927 21 27 38.408364 * 21 30 19.088248 21 30 36.744372 0.23 2127-096 -09 40 49.81991 *-09 27 37.43511 -09 26 16.73888 0.37 /aps3/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.083 scan hours, 2.505 baseline hours above horizon. * J2131-1207 21 28 52.676063 * 21 31 35.261755 21 31 53.136782 0.21 2128-123 -12 20 20.53564 *-12 07 04.79603 -12 05 42.84703 0.30 J2131-12 /aps3/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.083 scan hours, 2.844 baseline hours above horizon. * J2148+0657 21 45 36.078475 * 21 48 05.458673 21 48 21.701858 0.30 2145+067 06 43 40.90460 * 06 57 38.60420 06 58 59.23842 0.20 J2148+06 /aps3/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.150 scan hours, 7.749 baseline hours above horizon. 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) J1139+7654 70.1 J1323+7942 73.5 J1357+7643 76.8 J1406+7828 75.8 J1719+1745 139.3 J1745+1720 138.4 J1752+1734 137.7 J1756+1535 139.3 J2129-1538 116.6 J2129-1821 117.4 J2130-0927 114.3 J2131-1207 115.0 J2148+0657 103.7 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