COVER INFORMATION Station: SHANGHAI (Code Sh ) Experiment: Type-2 quasars Exp. Code: EK022A Schedule Version: 1.00 Processed by SCHED version: 6.02 July 2005 PI: Hans-Rainer Kloeckner Address: University of Oxford Keble Road,Oxford OX1 3RH United Kingdom Phone: +44 1865 273435 EMAIL: hrk@astro.ox.ac.uk Fax: +44 1865 273390 Phone during observation: +44 1865 273435 Observing mode: 1 Gbit at 18cm Notes: >>> THANK YOU <<< Schedule for SHANGHAI (Code Sh ) Page 2 Type-2 quasars 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). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) SYNC ---------------------------------------------------------------------------------------- --- Sat 29 Oct 2005 Day 302 --- Next scan frequencies: 1610.49 1610.49 1610.49 1610.49 1642.49 1642.49 1642.49 1642.49 1674.49 1674.49 1674.49 1674.49 1706.49 1706.49 1706.49 1706.49 Next BBC frequencies: 689.51 689.51 689.51 689.51 657.51 657.51 657.51 657.51 625.51 625.51 625.51 625.51 593.51 593.51 593.51 593.51 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 09 30 00 J1722+5856 20 06 04 51.0 -32.4 2.7 117.2 0 1 1 0 09 30 00 09 35 00 =1721+589 20 11 04 50.4 -32.9 2.8 115.8 300 F 1 0 09 30 10 09 35 00 J1722+6105 20 11 04 49.4 -29.9 2.8 118.1 -8 1 1 0 09 35 00 09 41 00 =1722+611 20 17 05 48.8 -30.4 2.9 116.4 352 F 1 0 09 35 10 09 42 00 J1722+5856 20 18 06 49.6 -33.4 2.9 113.9 52 1 1 0 09 42 00 09 45 00 =1721+589 20 21 06 49.2 -33.7 3.0 113.0 180 F 1 0 09 42 10 09 45 00 AMS16 20 21 06 48.9 -34.1 3.0 112.1 -3 1 1 0 09 45 00 09 53 00 --- 20 29 07 47.9 -34.7 3.2 109.9 477 F 1 0 09 45 10 09 54 00 J1722+5856 20 30 08 48.1 -34.3 3.1 110.6 57 1 1 0 09 54 00 09 57 00 =1721+589 20 33 08 47.8 -34.5 3.2 109.8 180 F 1 0 09 54 10 09 57 00 AMS16 20 33 08 47.5 -34.9 3.2 108.9 -3 1 1 0 09 57 00 10 05 00 --- 20 41 09 46.5 -35.4 3.4 106.8 477 F 1 0 09 57 10 10 06 00 J1722+5856 20 42 10 46.7 -35.1 3.3 107.5 57 1 1 0 10 06 00 10 09 00 =1721+589 20 45 10 46.3 -35.2 3.4 106.7 180 F 1 0 10 06 10 10 09 00 AMS15 20 45 10 45.8 -35.3 3.4 105.9 -4 1 1 0 10 09 00 10 17 00 --- 20 53 11 44.8 -35.7 3.6 103.9 476 F 1 0 10 09 10 10 18 00 J1722+5856 20 54 12 45.2 -35.7 3.5 104.5 57 1 1 0 10 18 00 10 21 00 =1721+589 20 57 12 44.8 -35.8 3.6 103.7 180 F 1 0 10 18 10 10 21 00 AMS15 20 57 12 44.3 -35.8 3.6 102.9 -4 1 1 0 10 21 00 10 29 00 --- 21 05 13 43.3 -36.1 3.8 101.0 476 F 1 0 10 21 10 10 30 00 J1722+5856 21 06 14 43.6 -36.2 3.7 101.5 57 1 1 0 10 30 00 10 33 00 =1721+589 21 09 14 43.3 -36.3 3.8 100.8 180 F 1 0 10 30 10 Schedule for SHANGHAI (Code Sh ) Page 3 Type-2 quasars 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). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) SYNC ---------------------------------------------------------------------------------------- --- Sat 29 Oct 2005 Day 302 --- 10 33 00 AMS17 21 09 14 43.0 -36.4 3.8 100.3 -3 1 1 0 10 33 00 10 41 00 --- 21 17 15 42.0 -36.7 3.9 98.5 477 F 1 0 10 33 10 10 42 00 J1722+5856 21 18 15 42.1 -36.6 3.9 98.7 58 1 1 0 10 42 00 10 45 00 =1721+589 21 21 16 41.7 -36.6 4.0 98.0 180 F 1 0 10 42 10 10 45 00 AMS17 21 21 16 41.5 -36.8 4.0 97.5 -3 1 1 0 10 45 00 10 53 00 --- 21 29 17 40.5 -36.9 4.1 95.7 477 F 1 0 10 45 10 10 54 00 J1722+5856 21 30 17 40.6 -36.8 4.1 96.0 58 1 1 0 10 54 00 10 57 00 =1721+589 21 33 18 40.2 -36.9 4.2 95.3 180 F 1 0 10 54 10 10 57 00 AMS12 21 33 18 39.6 -36.8 4.2 94.4 -4 1 1 0 10 57 00 11 05 00 --- 21 41 19 38.6 -36.9 4.4 92.6 476 F 1 0 10 57 10 11 06 00 J1722+5856 21 42 19 39.0 -37.0 4.3 93.3 57 1 1 0 11 06 00 11 09 00 =1721+589 21 45 20 38.6 -37.0 4.4 92.6 180 F 1 0 11 06 10 11 09 00 AMS12 21 45 20 38.1 -36.9 4.4 91.8 -4 1 1 0 11 09 00 11 17 00 --- 21 53 21 37.1 -36.9 4.6 90.0 476 F 1 0 11 09 10 11 18 00 J1722+5856 21 54 21 37.5 -37.1 4.5 90.7 57 1 1 0 11 18 00 11 23 00 =1721+589 21 59 22 36.8 -37.1 4.6 89.6 300 F 1 0 11 18 10 11 23 00 J1722+6105 21 59 22 36.8 -34.4 4.6 91.2 -7 1 1 0 11 23 00 11 29 00 =1722+611 22 05 23 36.1 -34.4 4.7 89.9 353 F 1 0 11 23 10 11 30 00 J1722+5856 22 06 23 35.9 -37.0 4.7 88.1 53 1 1 0 11 30 00 11 33 00 =1721+589 22 09 24 35.5 -37.0 4.8 87.5 180 F 1 0 11 30 10 11 34 00 3C345 22 10 24 25.1 -57.1 5.5 69.4 18 1 1 0 11 34 00 11 45 00 --- 22 21 26 23.1 -56.3 5.6 68.0 660 F 1 0 11 34 10 11 48 00 J1722+5856 22 24 26 33.6 -36.8 5.0 84.3 139 1 1 0 11 48 00 11 51 00 =1721+589 22 27 27 33.2 -36.8 5.1 83.7 180 F 1 0 11 48 10 11 51 00 AMS16 22 27 27 32.8 -36.9 5.1 83.0 -3 1 1 0 11 51 00 11 59 00 --- 22 35 28 31.8 -36.8 5.3 81.4 477 F 1 0 11 51 10 12 00 00 J1722+5856 22 36 28 32.1 -36.6 5.2 81.9 57 1 1 0 12 00 00 12 03 00 =1721+589 22 39 29 31.7 -36.6 5.3 81.3 180 F 1 0 12 00 10 12 03 00 AMS16 22 39 29 31.3 -36.7 5.3 80.6 -3 1 1 0 12 03 00 12 11 00 --- 22 47 30 30.3 -36.5 5.5 79.0 477 F 1 0 12 03 10 Schedule for SHANGHAI (Code Sh ) Page 4 Type-2 quasars 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). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) SYNC ---------------------------------------------------------------------------------------- --- Sat 29 Oct 2005 Day 302 --- 12 12 00 J1722+5856 22 48 30 30.5 -36.3 5.4 79.5 57 1 1 0 12 12 00 12 15 00 =1721+589 22 51 31 30.2 -36.2 5.5 78.9 180 F 1 0 12 12 10 12 15 00 AMS15 22 51 31 29.7 -36.0 5.5 78.2 -3 1 1 0 12 15 00 12 23 00 --- 22 59 32 28.7 -35.7 5.7 76.6 477 F 1 0 12 15 10 12 24 00 J1722+5856 23 00 32 29.0 -36.0 5.6 77.1 57 1 1 0 12 24 00 12 27 00 =1721+589 23 03 33 28.6 -35.9 5.7 76.5 180 F 1 0 12 24 10 12 27 00 AMS15 23 03 33 28.2 -35.6 5.7 75.8 -3 1 1 0 12 27 00 12 35 00 --- 23 11 34 27.2 -35.3 5.9 74.2 477 F 1 0 12 27 10 12 36 00 J1722+5856 23 12 34 27.5 -35.5 5.8 74.7 57 1 1 0 12 36 00 12 39 00 =1721+589 23 15 35 27.1 -35.4 5.9 74.1 180 F 1 0 12 36 10 12 39 00 AMS17 23 15 35 26.9 -35.4 5.9 73.7 -3 1 1 0 12 39 00 12 47 00 --- 23 23 36 25.9 -35.1 6.0 72.1 477 F 1 0 12 39 10 12 48 00 J1722+5856 23 24 36 26.0 -35.0 6.0 72.3 58 1 1 0 12 48 00 12 51 00 =1721+589 23 27 37 25.7 -34.9 6.1 71.7 180 F 1 0 12 48 10 12 51 00 AMS17 23 27 37 25.4 -34.9 6.1 71.4 -3 1 1 0 12 51 00 12 59 00 --- 23 35 38 24.4 -34.5 6.2 69.8 477 F 1 0 12 51 10 13 00 00 J1722+5856 23 36 38 24.6 -34.5 6.2 70.0 58 1 1 0 13 00 00 13 03 00 =1721+589 23 39 39 24.2 -34.3 6.3 69.4 180 F 1 0 13 00 10 13 03 00 AMS12 23 39 39 23.7 -34.0 6.4 68.6 -4 1 1 0 13 03 00 13 11 00 --- 23 47 40 22.8 -33.6 6.5 67.1 476 F 1 0 13 03 10 13 12 00 J1722+5856 23 48 40 23.1 -33.9 6.4 67.7 57 1 1 0 13 12 00 13 15 00 =1721+589 23 51 41 22.7 -33.7 6.5 67.1 180 F 1 0 13 12 10 13 15 00 AMS12 23 51 41 22.3 -33.4 6.6 66.3 -4 1 1 0 13 15 00 13 23 00 --- 23 59 42 21.3 -32.9 6.7 64.8 476 F 1 0 13 15 10 13 24 00 J1722+5856 00 00 42 21.7 -33.2 6.6 65.3 57 1 1 0 13 24 00 13 27 00 =1721+589 00 03 43 21.3 -33.0 6.7 64.8 180 F 1 0 13 24 10 13 42 00 J2005+7752 00 18 45 35.8 -13.4 4.2 109.2 850 1 1 0 13 42 00 13 53 00 =2007+777 00 29 47 35.3 -13.6 4.4 106.4 660 F 1 0 13 42 10 13 55 00 J1722+5856 00 31 47 18.1 -31.2 7.2 59.4 61 1 1 0 13 55 00 13 58 00 =1721+589 00 34 48 17.8 -31.0 7.2 58.8 180 F 1 0 13 55 10 Schedule for SHANGHAI (Code Sh ) Page 5 Type-2 quasars 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). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) SYNC ---------------------------------------------------------------------------------------- --- Sat 29 Oct 2005 Day 302 --- 13 58 00 J1722+6105 00 34 48 18.9 -29.1 7.2 59.4 -6 1 1 0 13 58 00 14 03 00 =1722+611 00 39 48 18.4 -28.7 7.3 58.4 294 F 1 0 13 58 10 14 04 00 J1722+5856 00 40 49 17.1 -30.6 7.3 57.6 54 1 1 0 14 04 00 14 07 00 =1721+589 00 43 49 16.8 -30.4 7.4 57.0 180 F 1 0 14 04 10 14 07 00 AMS16 00 43 49 16.4 -30.3 7.4 56.4 -3 1 1 0 14 07 00 14 15 00 --- 00 51 50 15.6 -29.7 7.5 54.9 477 F 1 0 14 07 10 14 16 00 J1722+5856 00 52 51 15.8 -29.7 7.5 55.3 57 1 1 0 14 16 00 14 19 00 =1721+589 00 55 51 15.5 -29.5 7.6 54.7 180 F 1 0 14 16 10 14 19 00 AMS16 00 55 51 15.1 -29.4 7.6 54.1 -3 1 1 0 14 19 00 14 27 00 --- 01 03 52 14.3 -28.7 7.7 52.6 477 F 1 0 14 19 10 14 28 00 J1722+5856 01 04 53 14.6 -28.8 7.7 53.0 57 1 1 0 14 28 00 14 31 00 =1721+589 01 07 53 14.3 -28.5 7.8 52.4 180 F 1 0 14 28 10 14 31 00 AMS15 01 07 53 14.0 -28.1 7.8 51.7 -3 1 1 0 14 31 00 14 39 00 --- 01 15 54 13.2 -27.4 7.9 50.1 477 F 1 0 14 31 10 14 40 00 J1722+5856 01 16 55 13.4 -27.8 7.9 50.6 57 1 1 0 14 40 00 14 43 00 =1721+589 01 19 55 13.1 -27.5 8.0 50.0 180 F 1 0 14 40 10 14 43 00 AMS15 01 19 55 12.8 -27.1 8.0 49.3 -3 1 1 0 14 43 00 14 51 00 --- 01 27 56 12.0 -26.4 8.1 47.8 477 F 1 0 14 43 10 14 52 00 J1722+5856 01 28 57 12.2 -26.7 8.1 48.3 57 1 1 0 14 52 00 14 55 00 =1721+589 01 31 57 11.9 -26.5 8.2 47.7 180 F 1 0 14 52 10 14 55 00 AMS17 01 31 57 11.7 -26.3 8.2 47.3 -3 1 1 0 14 55 00 15 03 00 --- 01 39 58 10.9 -25.6 8.3 45.7 477 F 1 0 14 55 10 15 04 00 J1722+5856 01 40 59 11.1 -25.7 8.3 45.9 58 1 1 0 15 04 00 15 07 00 =1721+589 01 43 59 10.8 -25.4 8.4 45.3 180 F 1 0 15 04 10 15 07 00 AMS17 01 43 59 10.6 -25.3 8.4 45.0 -3 1 1 0 15 07 00 15 15 00 --- 01 52 00 9.8 -24.5 8.5 43.4 477 F 1 0 15 07 10 15 16 00 J1722+5856 01 53 00 10.0 -24.5 8.5 43.5 58 1 1 0 15 16 00 15 19 00 =1721+589 01 56 01 9.7 -24.2 8.6 43.0 180 F 1 0 15 16 10 15 19 00 AMS12 01 56 01 9.4 -23.8 8.6 42.1 -3 1 1 0 15 19 00 15 27 00 --- 02 04 02 8.7 -23.0 8.8 40.5 477 F 1 0 15 19 10 Schedule for SHANGHAI (Code Sh ) Page 6 Type-2 quasars 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). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) SYNC ---------------------------------------------------------------------------------------- --- Sat 29 Oct 2005 Day 302 --- 15 28 00 J1722+5856 02 05 02 8.9 -23.4 8.7 41.2 57 1 1 0 15 28 00 15 31 00 =1721+589 02 08 03 8.7 -23.1 8.8 40.6 180 F 1 0 15 28 10 15 31 00 AMS12 02 08 03 8.4 -22.6 8.8 39.7 -3 1 1 0 15 31 00 15 39 00 --- 02 16 04 7.7 -21.8 9.0 38.1 477 F 1 0 15 31 10 15 40 00 J1722+5856 02 17 04 7.9 -22.2 8.9 38.8 57 1 1 0 15 40 00 15 45 00 =1721+589 02 22 05 7.5 -21.7 9.0 37.8 300 F 1 0 15 40 10 15 45 00 J1722+6105 02 22 05 9.2 -20.3 9.0 38.0 -8 1 1 0 15 45 00 15 51 00 =1722+611 02 28 06 8.8 -19.7 9.1 36.7 352 F 1 0 15 45 10 15 52 00 J1722+5856 02 29 06 7.0 -20.9 9.1 36.3 52 1 1 0 15 52 00 15 55 00 =1721+589 02 32 07 6.7 -20.6 9.2 35.7 180 F 1 0 15 52 10 15 55 00 AMS16 02 32 07 6.4 -20.4 9.2 35.1 -3 1 1 0 15 55 00 16 03 00 --- 02 40 08 5.8 -19.5 9.3 33.5 477 F 1 0 15 55 10 16 04 00 J1722+5856 02 41 08 6.1 -19.6 9.3 33.9 57 1 1 0 16 04 00 16 07 00 =1721+589 02 44 09 5.9 -19.3 9.4 33.3 180 F 1 0 16 04 10 16 16 00 J1722+5856 02 53 10 5.2 -18.3 9.5 31.5 536 1 1 0 16 16 00 16 19 00 =1721+589 02 56 11 5.0 -18.0 9.6 30.8 180 F 1 0 16 16 10 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: 1Gbs.18cm Matches group sh18cm in ./hrkfreq.dat Huang Xinyong 27Sept05 Setup group: 9 Station: SHANGHAI Total bit rate: 1024 Format: MKIV1:2 Bits per sample: 2 Sample rate: 32.000 Number of channels: 16 Speedup factor: 0.50 Disk used to record data. 1st LO= 2300.00 2300.00 2300.00 2300.00 2300.00 2300.00 2300.00 2300.00 2300.00 2300.00 2300.00 2300.00 2300.00 2300.00 2300.00 2300.00 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 2 1 2 3 4 3 4 5 6 5 6 7 8 7 8 BBC SB= U U L L U U L L U U L L U U L L IF = C A C A C A C A C A C A C A C A The following frequency sets based on this setup were used. Frequency Set: 9 Setup file default. Used pcal sets: 1 LO sum= 1610.49 1610.49 1610.49 1610.49 1642.49 1642.49 1642.49 1642.49 1674.49 1674.49 1674.49 1674.49 1706.49 1706.49 1706.49 1706.49 BBC fr= 689.51 689.51 689.51 689.51 657.51 657.51 657.51 657.51 625.51 625.51 625.51 625.51 593.51 593.51 593.51 593.51 Bandwd= 16.000 16.000 16.000 16.000 16.000 16.000 16.000 16.000 16.000 16.000 16.000 16.000 16.000 16.000 16.000 16.000 The following pulse cal sets were used with this setup: Pulse cal detection set: 1 PCAL = 1MHZ PCALXB1= S1 S3 S5 S7 S9 S11 S13 S15 PCALXB2= S2 S4 S6 S8 S10 S12 S14 S16 PCALFR1= 490 510 490 510 490 510 490 510 PCALFR2= 490 510 490 510 490 510 490 510 Track assignments are: track1= 2, 10, 18, 26, 3, 11, 19, 27, 66, 74, 82, 90, 67, 75, 83, 91 barrel=roll_off SOURCE LIST -- Type-2 quasars 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) * AMS12 17 17 38.418600 * 17 18 22.650000 17 18 25.969615 0.00 59 04 56.72127 * 59 01 54.25800 59 01 38.74536 0.00 From catalog imbedded in main SCHED input file. 1.000 scan hours, 32.948 baseline hours above horizon. * AMS15 17 18 12.853809 * 17 18 56.927000 17 19 00.228742 0.00 59 06 24.95149 * 59 03 24.95000 59 03 09.74694 0.00 From catalog imbedded in main SCHED input file. 1.067 scan hours, 34.855 baseline hours above horizon. * AMS16 17 18 56.894176 * 17 19 42.074000 17 19 45.517372 0.00 58 50 05.71563 * 58 47 08.91100 58 46 54.11159 0.00 From catalog imbedded in main SCHED input file. 1.067 scan hours, 35.948 baseline hours above horizon. * AMS17 17 20 00.448488 * 17 20 45.170000 17 20 48.559501 0.00 58 55 13.59647 * 58 52 21.33500 58 52 07.10658 0.00 From catalog imbedded in main SCHED input file. 1.067 scan hours, 35.053 baseline hours above horizon. J1642+3948 16 41 17.606231 * 16 42 58.809968 16 43 09.119068 0.26 1641+399 39 54 10.81493 * 39 48 36.99399 39 48 02.10034 0.40 * 3C345 /data/soay/hrk/HRKSOFTWAREBOX/SCHED_6.02/catalogs/sources.vlba J1642+39 VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.183 scan hours, 5.893 baseline hours above horizon. * J1722+5856 17 21 52.440263 * 17 22 36.726557 17 22 40.067948 0.62 1721+589 58 59 06.49428 * 58 56 22.26066 58 56 09.04151 0.49 /data/soay/hrk/HRKSOFTWAREBOX/SCHED_6.02/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 2.050 scan hours, 71.221 baseline hours above horizon. * J1722+6105 17 22 05.759508 * 17 22 40.059358 17 22 42.145684 0.52 1722+611 61 08 43.42140 * 61 05 59.78729 61 05 46.62183 0.45 /data/soay/hrk/HRKSOFTWAREBOX/SCHED_6.02/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.433 scan hours, 13.733 baseline hours above horizon. * J2005+7752 20 07 20.430184 * 20 05 30.998512 20 05 15.808903 0.96 2007+777 77 43 58.12306 * 77 52 43.24759 77 53 55.45504 0.40 J2005+77 /data/soay/hrk/HRKSOFTWAREBOX/SCHED_6.02/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.183 scan hours, 6.283 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) AMS12 81.5 AMS15 81.6 AMS16 81.4 AMS17 81.6 3C345 63.5 J1722+5856 81.8 J1722+6105 83.3 J2005+7752 102.7 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