COVER INFORMATION Station: VLBA_FD (Code Fd ) Experiment: BE042c; S/X observation of J1413+4339 Exp. Code: be042c Schedule Version: 1.00 Processed by SCHED version: 6.02 July 2005 PI: Philip Edwards Address: Institute of Space and Astronautical Science 3-1-1 Yoshinodai, Sagamihara Kanagawa 229-8510 Japan Phone: +81-42-759-8342 EMAIL: pge@vsop.isas.ac.jp Fax: +81-42-759-8485 Phone during observation: +81-42-759-8342 Observing mode: 128-4-2 Notes: Fringe finder: J1653+3945 (=Mkn501) Ph. ref. cal.: J1405+4056 1 x 2.5 hrs dynamically scheduled centered at LST 3.5 Schedule for VLBA_FD (Code Fd ) Page 2 BE042c; S/X observation of J1413+4339 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. Automatic tape allocation specified. Tape positions are just estimates. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) SYNC ---------------------------------------------------------------------------------------- --- Sat 20 Aug 2005 Day 232 --- Next scan frequencies: 2262.49 2270.49 8412.49 8420.49 Next BBC frequencies: 837.51 829.51 812.49 820.49 Next scan bandwidths: 8.00 8.00 8.00 8.00 22 59 59 J1653+3945 14 01 42 54.0 63.3 -2.9 -91.0 0 1 1 0 22 59 44 23 04 48 =1652+398 14 06 32 54.9 63.3 -2.8 -91.8 289 F 1 0 23 00 07 23 06 58 J1405+4056 14 08 42 79.7 -3.5 0.1 176.0 74 1 1 0 23 06 43 23 07 47 =1403+411 14 09 32 79.7 -4.4 0.1 175.0 50 F 1 0 23 07 06 23 07 57 J1413+4339 14 09 42 77.0 3.4 -0.1 -175.9 -1 1 1 0 23 07 47 23 10 47 --- 14 12 32 77.0 1.1 0.0 -178.6 168 F 1 0 23 07 47 23 10 57 J1405+4056 14 12 42 79.6 -7.7 0.1 171.2 -2 1 1 0 23 10 47 23 11 47 =1403+411 14 13 32 79.6 -8.6 0.1 170.2 48 F 1 0 23 10 47 23 11 57 J1413+4339 14 13 42 77.0 0.2 0.0 -179.8 -2 1 1 0 23 11 47 23 14 46 --- 14 16 32 77.0 -2.1 0.0 177.5 168 F 1 0 23 11 47 23 14 56 J1405+4056 14 16 42 79.5 -11.8 0.2 166.5 -3 1 1 0 23 14 46 23 15 46 =1403+411 14 17 32 79.4 -12.6 0.2 165.6 47 F 1 0 23 14 46 23 15 56 J1413+4339 14 17 42 77.0 -3.0 0.1 176.4 -2 1 1 0 23 15 46 23 18 46 --- 14 20 32 76.9 -5.3 0.1 173.7 167 F 1 0 23 15 46 23 18 56 J1405+4056 14 20 42 79.3 -15.7 0.3 162.0 -3 1 1 0 23 18 46 23 19 45 =1403+411 14 21 32 79.2 -16.5 0.3 161.1 47 F 1 0 23 18 46 23 19 55 J1413+4339 14 21 42 76.9 -6.2 0.1 172.6 -3 1 1 0 23 19 45 23 22 45 --- 14 24 32 76.8 -8.4 0.2 170.0 167 F 1 0 23 19 45 23 22 55 J1405+4056 14 24 42 79.0 -19.5 0.3 157.7 -3 1 1 0 23 22 45 23 23 45 =1403+411 14 25 32 78.9 -20.2 0.3 156.8 46 F 1 0 23 22 45 23 23 55 J1413+4339 14 25 42 76.8 -9.3 0.2 168.9 -3 1 1 0 23 23 45 23 26 44 --- 14 28 32 76.7 -11.5 0.2 166.3 166 F 1 0 23 23 45 23 26 54 J1405+4056 14 28 42 78.7 -23.0 0.4 153.5 -4 1 1 0 23 26 44 23 27 44 =1403+411 14 29 32 78.6 -23.8 0.4 152.7 46 F 1 0 23 26 44 23 27 54 J1413+4339 14 29 42 76.6 -12.4 0.3 165.2 -4 1 1 0 23 27 44 23 30 44 --- 14 32 32 76.5 -14.5 0.3 162.6 166 F 1 0 23 27 44 Schedule for VLBA_FD (Code Fd ) Page 3 BE042c; S/X observation of J1413+4339 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. Automatic tape allocation specified. Tape positions are just estimates. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) SYNC ---------------------------------------------------------------------------------------- --- Sat 20 Aug 2005 Day 232 --- 23 30 54 J1405+4056 14 32 42 78.3 -26.4 0.5 149.6 -4 1 1 0 23 30 44 23 31 43 =1403+411 14 33 32 78.2 -27.0 0.5 148.8 46 F 1 0 23 30 44 23 31 53 J1413+4339 14 33 42 76.4 -15.4 0.3 161.6 -4 1 1 0 23 31 43 23 34 43 --- 14 36 32 76.2 -17.4 0.4 159.1 166 F 1 0 23 31 43 23 34 53 J1405+4056 14 36 42 77.9 -29.5 0.5 145.9 -4 1 1 0 23 34 43 23 35 43 =1403+411 14 37 32 77.8 -30.1 0.5 145.2 46 F 1 0 23 34 43 23 35 53 J1413+4339 14 37 42 76.2 -18.3 0.4 158.1 -4 1 1 0 23 35 43 23 38 42 --- 14 40 32 76.0 -20.2 0.4 155.7 166 F 1 0 23 35 43 23 38 52 J1405+4056 14 40 42 77.5 -32.4 0.6 142.5 -4 1 1 0 23 38 42 23 39 42 =1403+411 14 41 32 77.4 -32.9 0.6 141.8 46 F 1 0 23 38 42 23 39 52 J1413+4339 14 41 42 75.9 -21.0 0.5 154.8 -4 1 1 0 23 39 42 23 42 42 --- 14 44 32 75.7 -22.9 0.5 152.5 166 F 1 0 23 39 42 23 42 52 J1405+4056 14 44 42 77.0 -35.0 0.7 139.2 -4 1 1 0 23 42 42 23 43 42 =1403+411 14 45 32 76.9 -35.5 0.7 138.6 46 F 1 0 23 42 42 23 43 51 J1413+4339 14 45 42 75.6 -23.6 0.5 151.6 -4 1 1 0 23 43 42 23 46 41 --- 14 48 32 75.3 -25.4 0.6 149.3 166 F 1 0 23 43 42 23 46 51 J1405+4056 14 48 42 76.5 -37.4 0.7 136.2 -4 1 1 0 23 46 41 23 47 41 =1403+411 14 49 32 76.4 -37.9 0.7 135.6 46 F 1 0 23 46 41 23 47 51 J1413+4339 14 49 42 75.2 -26.1 0.6 148.5 -4 1 1 0 23 47 41 23 50 40 --- 14 52 32 74.9 -27.8 0.6 146.4 166 F 1 0 23 47 41 23 50 50 J1405+4056 14 52 42 76.0 -39.7 0.8 133.4 -4 1 1 0 23 50 40 23 51 40 =1403+411 14 53 32 75.8 -40.1 0.8 132.8 46 F 1 0 23 50 40 23 51 50 J1413+4339 14 53 42 74.8 -28.4 0.7 145.5 -4 1 1 0 23 51 40 23 54 40 --- 14 56 32 74.5 -30.0 0.7 143.5 166 F 1 0 23 51 40 23 54 50 J1405+4056 14 56 42 75.4 -41.7 0.9 130.7 -4 1 1 0 23 54 40 23 55 40 =1403+411 14 57 32 75.3 -42.1 0.9 130.2 46 F 1 0 23 54 40 23 55 50 J1413+4339 14 57 42 74.4 -30.6 0.7 142.7 -4 1 1 0 23 55 40 23 58 39 --- 15 00 32 74.1 -32.1 0.8 140.8 166 F 1 0 23 55 40 Schedule for VLBA_FD (Code Fd ) Page 4 BE042c; S/X observation of J1413+4339 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. Automatic tape allocation specified. Tape positions are just estimates. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) SYNC ---------------------------------------------------------------------------------------- --- Sat 20 Aug 2005 Day 232 --- 23 58 49 J1405+4056 15 00 42 74.8 -43.6 0.9 128.3 -4 1 1 0 23 58 39 23 59 39 =1403+411 15 01 32 74.7 -44.0 0.9 127.8 46 F 1 0 23 58 39 --- Start: Sat 20 Aug 2005 Day 232 -- Stop: Sun 21 Aug 2005 Day 233 --- 23 59 49 J1413+4339 15 01 42 73.9 -32.7 0.8 140.0 -4 1 1 0 23 59 39 00 02 38 --- 15 04 32 73.6 -34.1 0.8 138.2 166 F 1 0 23 59 39 00 02 48 J1405+4056 15 04 42 74.2 -45.3 1.0 126.0 -3 1 1 0 00 02 38 00 03 38 =1403+411 15 05 32 74.1 -45.6 1.0 125.5 46 F 1 0 00 02 38 00 03 48 J1413+4339 15 05 42 73.4 -34.7 0.9 137.5 -3 1 1 0 00 03 38 00 06 38 --- 15 08 32 73.1 -35.9 0.9 135.7 166 F 1 0 00 03 38 00 06 48 J1405+4056 15 08 42 73.6 -46.9 1.1 123.8 -3 1 1 0 00 06 38 00 07 38 =1403+411 15 09 32 73.5 -47.2 1.1 123.4 47 F 1 0 00 06 38 00 07 48 J1413+4339 15 09 42 72.9 -36.5 0.9 135.0 -3 1 1 0 00 07 38 00 10 37 --- 15 12 32 72.6 -37.7 1.0 133.4 166 F 1 0 00 07 38 00 10 47 J1405+4056 15 12 42 72.9 -48.3 1.1 121.8 -3 1 1 0 00 10 37 00 11 37 =1403+411 15 13 32 72.8 -48.6 1.1 121.4 47 F 1 0 00 10 37 00 11 47 J1413+4339 15 13 42 72.4 -38.1 1.0 132.7 -3 1 1 0 00 11 37 00 14 36 --- 15 16 32 72.0 -39.3 1.0 131.2 167 F 1 0 00 11 37 00 14 46 J1405+4056 15 16 42 72.3 -49.6 1.2 119.9 -3 1 1 0 00 14 36 00 15 36 =1403+411 15 17 32 72.2 -49.8 1.2 119.5 47 F 1 0 00 14 36 00 15 46 J1413+4339 15 17 42 71.9 -39.7 1.1 130.6 -3 1 1 0 00 15 36 00 18 36 --- 15 20 32 71.5 -40.8 1.1 129.1 167 F 1 0 00 15 36 00 18 46 J1405+4056 15 20 42 71.6 -50.8 1.3 118.1 -3 1 1 0 00 18 36 00 19 36 =1403+411 15 21 32 71.5 -51.0 1.3 117.8 47 F 1 0 00 18 36 00 19 46 J1413+4339 15 21 42 71.3 -41.2 1.1 128.5 -3 1 1 0 00 19 36 00 22 35 --- 15 24 32 70.9 -42.1 1.2 127.1 167 F 1 0 00 19 36 00 22 45 J1405+4056 15 24 42 71.0 -51.8 1.3 116.4 -2 1 1 0 00 22 35 00 23 35 =1403+411 15 25 32 70.8 -52.0 1.3 116.1 47 F 1 0 00 22 35 00 23 45 J1413+4339 15 25 42 70.7 -42.5 1.2 126.5 -2 1 1 0 00 23 35 00 26 34 --- 15 28 32 70.3 -43.4 1.2 125.2 167 F 1 0 00 23 35 Schedule for VLBA_FD (Code Fd ) Page 5 BE042c; S/X observation of J1413+4339 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. Automatic tape allocation specified. Tape positions are just estimates. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) SYNC ---------------------------------------------------------------------------------------- --- Sun 21 Aug 2005 Day 233 --- 00 26 44 J1405+4056 15 28 42 70.3 -52.8 1.4 114.9 -2 1 1 0 00 26 34 00 27 34 =1403+411 15 29 32 70.1 -53.0 1.4 114.5 48 F 1 0 00 26 34 00 27 44 J1413+4339 15 29 42 70.2 -43.8 1.3 124.6 -2 1 1 0 00 27 34 00 30 34 --- 15 32 32 69.7 -44.6 1.3 123.4 167 F 1 0 00 27 34 00 30 44 J1405+4056 15 32 42 69.6 -53.7 1.5 113.4 -2 1 1 0 00 30 34 00 31 34 =1403+411 15 33 32 69.5 -53.9 1.5 113.1 48 F 1 0 00 30 34 00 31 44 J1413+4339 15 33 42 69.6 -45.0 1.3 122.8 -2 1 1 0 00 31 34 00 34 33 --- 15 36 32 69.1 -45.7 1.4 121.6 168 F 1 0 00 31 34 00 34 43 J1405+4056 15 36 42 68.9 -54.5 1.5 111.9 -2 1 1 0 00 34 33 00 35 33 =1403+411 15 37 32 68.8 -54.7 1.5 111.6 48 F 1 0 00 34 33 00 35 43 J1413+4339 15 37 42 68.9 -46.0 1.4 121.1 -2 1 1 0 00 35 33 00 38 33 --- 15 40 32 68.5 -46.8 1.4 120.0 168 F 1 0 00 35 33 00 38 42 J1405+4056 15 40 42 68.2 -55.3 1.6 110.6 -2 1 1 0 00 38 33 00 39 32 =1403+411 15 41 32 68.0 -55.4 1.6 110.3 48 F 1 0 00 38 33 00 39 42 J1413+4339 15 41 42 68.3 -47.0 1.5 119.5 -2 1 1 0 00 39 32 00 42 32 --- 15 44 32 67.9 -47.7 1.5 118.4 168 F 1 0 00 39 32 00 42 42 J1405+4056 15 44 42 67.5 -56.0 1.7 109.3 -2 1 1 0 00 42 32 00 43 32 =1403+411 15 45 32 67.3 -56.1 1.7 109.0 48 F 1 0 00 42 32 00 43 42 J1413+4339 15 45 42 67.7 -48.0 1.5 118.0 -1 1 1 0 00 43 32 00 46 31 --- 15 48 32 67.2 -48.6 1.6 116.9 168 F 1 0 00 43 32 00 46 41 J1405+4056 15 48 42 66.8 -56.6 1.7 108.1 -1 1 1 0 00 46 31 00 47 31 =1403+411 15 49 32 66.6 -56.7 1.7 107.8 48 F 1 0 00 46 31 00 47 41 J1413+4339 15 49 42 67.0 -48.8 1.6 116.5 -1 1 1 0 00 47 31 00 50 31 --- 15 52 32 66.6 -49.4 1.6 115.5 168 F 1 0 00 47 31 00 50 41 J1405+4056 15 52 42 66.1 -57.2 1.8 106.9 -1 1 1 0 00 50 31 00 51 30 =1403+411 15 53 32 65.9 -57.3 1.8 106.7 49 F 1 0 00 50 31 00 51 40 J1413+4339 15 53 42 66.4 -49.6 1.7 115.1 -1 1 1 0 00 51 30 00 54 30 --- 15 56 32 65.9 -50.2 1.7 114.1 168 F 1 0 00 51 30 Schedule for VLBA_FD (Code Fd ) Page 6 BE042c; S/X observation of J1413+4339 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. Automatic tape allocation specified. Tape positions are just estimates. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) SYNC ---------------------------------------------------------------------------------------- --- Sun 21 Aug 2005 Day 233 --- 00 54 40 J1405+4056 15 56 42 65.3 -57.7 1.9 105.8 -1 1 1 0 00 54 30 00 55 30 =1403+411 15 57 32 65.2 -57.8 1.9 105.5 49 F 1 0 00 54 30 00 55 40 J1413+4339 15 57 42 65.7 -50.4 1.7 113.7 -1 1 1 0 00 55 30 00 58 29 --- 16 00 32 65.3 -50.9 1.8 112.8 169 F 1 0 00 55 30 00 58 39 J1405+4056 16 00 42 64.6 -58.1 1.9 104.7 -1 1 1 0 00 58 29 00 59 29 =1403+411 16 01 32 64.4 -58.2 1.9 104.5 49 F 1 0 00 58 29 00 59 39 J1413+4339 16 01 42 65.1 -51.0 1.8 112.4 -1 1 1 0 00 59 29 01 02 29 --- 16 04 32 64.6 -51.5 1.8 111.5 169 F 1 0 00 59 29 01 02 39 J1405+4056 16 04 42 63.9 -58.6 2.0 103.6 -1 1 1 0 01 02 29 01 03 28 =1403+411 16 05 32 63.7 -58.7 2.0 103.4 49 F 1 0 01 02 29 01 03 38 J1413+4339 16 05 42 64.4 -51.7 1.9 111.1 -1 1 1 0 01 03 28 01 06 28 --- 16 08 32 63.9 -52.1 1.9 110.3 169 F 1 0 01 03 28 01 06 38 J1405+4056 16 08 42 63.1 -59.0 2.1 102.6 -1 1 1 0 01 06 28 01 07 28 =1403+411 16 09 32 63.0 -59.0 2.1 102.4 49 F 1 0 01 06 28 01 07 38 J1413+4339 16 09 42 63.7 -52.3 1.9 109.9 -1 1 1 0 01 07 28 01 10 27 --- 16 12 32 63.2 -52.6 2.0 109.1 169 F 1 0 01 07 28 01 10 37 J1405+4056 16 12 42 62.4 -59.3 2.1 101.7 0 1 1 0 01 10 27 01 11 27 =1403+411 16 13 32 62.2 -59.4 2.1 101.5 50 F 1 0 01 10 27 01 11 37 J1413+4339 16 13 42 63.0 -52.8 2.0 108.8 0 1 1 0 01 11 27 01 14 27 --- 16 16 32 62.5 -53.1 2.0 108.0 170 F 1 0 01 11 27 01 14 37 J1405+4056 16 16 42 61.6 -59.6 2.2 100.8 0 1 1 0 01 14 27 01 15 26 =1403+411 16 17 32 61.5 -59.7 2.2 100.6 50 F 1 0 01 14 27 01 15 36 J1413+4339 16 17 42 62.3 -53.3 2.1 107.6 0 1 1 0 01 15 26 01 18 26 --- 16 20 32 61.9 -53.6 2.1 106.9 170 F 1 0 01 15 26 01 18 36 J1405+4056 16 20 42 60.9 -59.9 2.3 99.9 0 1 1 0 01 18 26 01 19 26 =1403+411 16 21 32 60.7 -60.0 2.3 99.7 50 F 1 0 01 18 26 01 19 36 J1413+4339 16 21 42 61.7 -53.7 2.1 106.5 0 1 1 0 01 19 26 01 22 25 --- 16 24 32 61.2 -54.0 2.2 105.8 170 F 1 0 01 19 26 Schedule for VLBA_FD (Code Fd ) Page 7 BE042c; S/X observation of J1413+4339 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. Automatic tape allocation specified. Tape positions are just estimates. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) SYNC ---------------------------------------------------------------------------------------- --- Sun 21 Aug 2005 Day 233 --- 01 24 35 J1653+3945 16 26 42 79.3 29.6 -0.5 -146.4 68 1 1 0 01 24 20 01 29 24 =1652+398 16 31 32 79.8 25.2 -0.4 -151.5 289 F 1 0 01 24 43 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: /home/filehost/cwalker/sched/setups/vsx-128-4-2-R.set Matches group vsx_22 in /home/filehost/cwalker/sched/catalogs/freq.dat Setup group: 4 Station: VLBA_FD Total bit rate: 128 Format: VLBA1:4 Bits per sample: 2 Sample rate: 16.000 Number of channels: 4 Speedup factor: 2.00 Disk used to record data. 1st LO= 3100.00 3100.00 7600.00 7600.00 Net SB= U U U U Pol. = RCP RCP RCP RCP BBC = 1 2 3 4 BBC SB= L L U U IF = A A B B VLBA FE= 13cm 4cm 13cm 4cm VLBA Synth= 7.6 3.1 15.4 The following frequency sets based on this setup were used. Frequency Set: 4 Setup file default. Used pcal sets: 1 LO sum= 2262.49 2270.49 8412.49 8420.49 BBC fr= 837.51 829.51 812.49 820.49 Bandwd= 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 S1 S3 S1 S2 S3 S4 PCALXB2= S2 S4 S2 S4 M1 M2 M3 M4 PCALFR1= 510 510 6510 6510 0 0 0 0 PCALFR2= 510 510 6510 6510 0 0 0 0 Track assignments are: track1= 2, 18, 3, 19 barrel=roll_off SOURCE LIST -- BE042c; S/X observation of J1413+4339 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) * J1413+4339 14 11 44.963839 * 14 13 43.700000 14 13 56.708487 0.00 43 53 43.27450 * 43 39 44.82000 43 38 23.75590 0.00 From catalog imbedded in main SCHED input file. 1.601 scan hours, 70.117 baseline hours above horizon. * J1405+4056 14 03 04.025300 * 14 05 07.795440 14 05 21.301610 0.31 1403+411 41 11 16.37047 * 40 56 57.83085 40 55 34.22834 0.45 /home/filehost/cwalker/sched/catalogs/sources.vlba VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.471 scan hours, 19.244 baseline hours above horizon. * J1653+3945 16 52 11.729419 * 16 53 52.216684 16 54 04.032939 0.26 1652+398 39 50 25.15733 * 39 45 36.60891 39 45 13.08067 0.40 DA426 /home/filehost/cwalker/sched/catalogs/sources.vlba J1653+39 VLBA Calib Srcs - GSFC sols. - catalog 2004f_astro 0.161 scan hours, 7.230 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) J1413+4339 62.4 J1405+4056 60.3 J1653+3945 92.2 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