COVER INFORMATION Station: VLBA_KP (Code Kp ) 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_KP (Code Kp ) 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 13 31 02 48.7 64.4 -3.4 -84.5 0 1 1 0 22 59 44 23 04 48 =1652+398 13 35 52 49.6 64.5 -3.3 -85.1 289 F 1 0 23 00 07 23 06 58 J1405+4056 13 38 02 79.5 29.5 -0.5 -146.4 64 1 1 0 23 06 43 23 07 47 =1403+411 13 38 52 79.6 28.8 -0.4 -147.3 50 F 1 0 23 07 06 23 07 57 J1413+4339 13 39 02 76.5 28.0 -0.6 -146.7 -2 1 1 0 23 07 47 23 10 47 --- 13 41 52 76.7 26.1 -0.5 -149.0 167 F 1 0 23 07 47 23 10 57 J1405+4056 13 42 02 79.9 25.9 -0.4 -150.6 -2 1 1 0 23 10 47 23 11 47 =1403+411 13 42 52 80.0 25.1 -0.4 -151.5 48 F 1 0 23 10 47 23 11 57 J1413+4339 13 43 02 76.8 25.3 -0.5 -149.9 -2 1 1 0 23 11 47 23 14 46 --- 13 45 52 77.1 23.3 -0.5 -152.4 167 F 1 0 23 11 47 23 14 56 J1405+4056 13 46 02 80.2 22.0 -0.3 -155.1 -2 1 1 0 23 14 46 23 15 46 =1403+411 13 46 52 80.3 21.2 -0.3 -156.1 48 F 1 0 23 14 46 23 15 56 J1413+4339 13 47 02 77.2 22.5 -0.4 -153.4 -2 1 1 0 23 15 46 23 18 46 --- 13 49 52 77.4 20.4 -0.4 -155.9 167 F 1 0 23 15 46 23 18 56 J1405+4056 13 50 02 80.5 17.8 -0.3 -159.9 -2 1 1 0 23 18 46 23 19 45 =1403+411 13 50 52 80.6 16.9 -0.2 -160.9 48 F 1 0 23 18 46 23 19 55 J1413+4339 13 51 02 77.5 19.5 -0.4 -157.0 -2 1 1 0 23 19 45 23 22 45 --- 13 53 52 77.7 17.3 -0.3 -159.7 167 F 1 0 23 19 45 23 22 55 J1405+4056 13 54 02 80.7 13.4 -0.2 -164.9 -2 1 1 0 23 22 45 23 23 45 =1403+411 13 54 52 80.8 12.5 -0.2 -166.0 48 F 1 0 23 22 45 23 23 55 J1413+4339 13 55 02 77.7 16.3 -0.3 -160.8 -2 1 1 0 23 23 45 23 26 44 --- 13 57 52 77.9 14.0 -0.3 -163.5 167 F 1 0 23 23 45 23 26 54 J1405+4056 13 58 02 80.9 8.8 -0.1 -170.1 -2 1 1 0 23 26 44 23 27 44 =1403+411 13 58 52 80.9 7.8 -0.1 -171.2 48 F 1 0 23 26 44 23 27 54 J1413+4339 13 59 02 78.0 13.0 -0.2 -164.7 -2 1 1 0 23 27 44 23 30 44 --- 14 01 52 78.1 10.6 -0.2 -167.5 168 F 1 0 23 27 44 Schedule for VLBA_KP (Code Kp ) 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 02 02 81.0 4.0 -0.1 -175.5 -2 1 1 0 23 30 44 23 31 43 =1403+411 14 02 52 81.0 3.0 0.0 -176.6 48 F 1 0 23 30 44 23 31 53 J1413+4339 14 03 02 78.1 9.6 -0.2 -168.7 -2 1 1 0 23 31 43 23 34 43 --- 14 05 52 78.2 7.2 -0.1 -171.6 168 F 1 0 23 31 43 23 34 53 J1405+4056 14 06 02 81.0 -0.8 0.0 179.1 -2 1 1 0 23 34 43 23 35 43 =1403+411 14 06 52 81.0 -1.8 0.0 178.0 48 F 1 0 23 34 43 23 35 53 J1413+4339 14 07 02 78.2 6.2 -0.1 -172.8 -2 1 1 0 23 35 43 23 38 42 --- 14 09 52 78.3 3.6 -0.1 -175.7 168 F 1 0 23 35 43 23 38 52 J1405+4056 14 10 02 81.0 -5.6 0.1 173.7 -2 1 1 0 23 38 42 23 39 42 =1403+411 14 10 52 81.0 -6.6 0.1 172.5 48 F 1 0 23 38 42 23 39 52 J1413+4339 14 11 02 78.3 2.6 0.0 -176.9 -2 1 1 0 23 39 42 23 42 42 --- 14 13 52 78.3 0.1 0.0 -179.9 167 F 1 0 23 39 42 23 42 52 J1405+4056 14 14 02 80.9 -10.4 0.1 168.3 -3 1 1 0 23 42 42 23 43 42 =1403+411 14 14 52 80.8 -11.3 0.2 167.2 47 F 1 0 23 42 42 23 43 51 J1413+4339 14 15 02 78.3 -1.0 0.0 178.9 -3 1 1 0 23 43 42 23 46 41 --- 14 17 52 78.3 -3.5 0.1 175.9 167 F 1 0 23 43 42 23 46 51 J1405+4056 14 18 02 80.7 -14.9 0.2 163.2 -4 1 1 0 23 46 41 23 47 41 =1403+411 14 18 52 80.6 -15.9 0.2 162.1 46 F 1 0 23 46 41 23 47 51 J1413+4339 14 19 02 78.3 -4.5 0.1 174.7 -4 1 1 0 23 47 41 23 50 40 --- 14 21 52 78.2 -7.0 0.1 171.8 166 F 1 0 23 47 41 23 50 50 J1405+4056 14 22 02 80.4 -19.3 0.3 158.2 -4 1 1 0 23 50 40 23 51 40 =1403+411 14 22 52 80.4 -20.2 0.3 157.2 46 F 1 0 23 50 40 23 51 50 J1413+4339 14 23 02 78.2 -8.0 0.2 170.6 -4 1 1 0 23 51 40 23 54 40 --- 14 25 52 78.1 -10.5 0.2 167.7 165 F 1 0 23 51 40 23 54 50 J1405+4056 14 26 02 80.1 -23.4 0.3 153.6 -5 1 1 0 23 54 40 23 55 40 =1403+411 14 26 52 80.0 -24.2 0.4 152.6 45 F 1 0 23 54 40 23 55 50 J1413+4339 14 27 02 78.0 -11.5 0.2 166.5 -4 1 1 0 23 55 40 23 58 39 --- 14 29 52 77.9 -13.9 0.3 163.7 165 F 1 0 23 55 40 Schedule for VLBA_KP (Code Kp ) 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 14 30 02 79.8 -27.2 0.4 149.2 -5 1 1 0 23 58 39 23 59 39 =1403+411 14 30 52 79.7 -27.9 0.4 148.3 45 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 14 31 02 77.8 -14.8 0.3 162.5 -5 1 1 0 23 59 39 00 02 38 --- 14 33 52 77.7 -17.1 0.3 159.8 165 F 1 0 23 59 39 00 02 48 J1405+4056 14 34 02 79.3 -30.7 0.5 145.1 -5 1 1 0 00 02 38 00 03 38 =1403+411 14 34 52 79.3 -31.4 0.5 144.3 45 F 1 0 00 02 38 00 03 48 J1413+4339 14 35 02 77.6 -18.0 0.4 158.7 -5 1 1 0 00 03 38 00 06 38 --- 14 37 52 77.4 -20.2 0.4 156.1 165 F 1 0 00 03 38 00 06 48 J1405+4056 14 38 02 78.9 -33.9 0.5 141.3 -5 1 1 0 00 06 38 00 07 38 =1403+411 14 38 52 78.8 -34.5 0.6 140.5 45 F 1 0 00 06 38 00 07 48 J1413+4339 14 39 02 77.3 -21.1 0.4 155.0 -5 1 1 0 00 07 38 00 10 37 --- 14 41 52 77.1 -23.2 0.5 152.5 165 F 1 0 00 07 38 00 10 47 J1405+4056 14 42 02 78.4 -36.8 0.6 137.7 -5 1 1 0 00 10 37 00 11 37 =1403+411 14 42 52 78.3 -37.4 0.6 137.0 45 F 1 0 00 10 37 00 11 47 J1413+4339 14 43 02 77.0 -24.0 0.5 151.5 -5 1 1 0 00 11 37 00 14 36 --- 14 45 52 76.7 -26.0 0.5 149.1 165 F 1 0 00 11 37 00 14 46 J1405+4056 14 46 02 77.9 -39.4 0.7 134.5 -5 1 1 0 00 14 36 00 15 36 =1403+411 14 46 52 77.8 -40.0 0.7 133.9 45 F 1 0 00 14 36 00 15 46 J1413+4339 14 47 02 76.6 -26.8 0.6 148.1 -5 1 1 0 00 15 36 00 18 36 --- 14 49 52 76.4 -28.6 0.6 145.9 165 F 1 0 00 15 36 00 18 46 J1405+4056 14 50 02 77.3 -41.8 0.7 131.5 -5 1 1 0 00 18 36 00 19 36 =1403+411 14 50 52 77.2 -42.3 0.8 130.9 45 F 1 0 00 18 36 00 19 46 J1413+4339 14 51 02 76.2 -29.3 0.6 145.0 -5 1 1 0 00 19 36 00 22 35 --- 14 53 52 75.9 -31.0 0.7 142.8 165 F 1 0 00 19 36 00 22 45 J1405+4056 14 54 02 76.7 -44.0 0.8 128.7 -5 1 1 0 00 22 35 00 23 35 =1403+411 14 54 52 76.6 -44.4 0.8 128.2 45 F 1 0 00 22 35 00 23 45 J1413+4339 14 55 02 75.8 -31.7 0.7 141.9 -4 1 1 0 00 23 35 00 26 34 --- 14 57 52 75.5 -33.3 0.7 139.9 165 F 1 0 00 23 35 Schedule for VLBA_KP (Code Kp ) 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 14 58 02 76.1 -46.0 0.9 126.2 -4 1 1 0 00 26 34 00 27 34 =1403+411 14 58 52 76.0 -46.3 0.9 125.7 45 F 1 0 00 26 34 00 27 44 J1413+4339 14 59 02 75.3 -34.0 0.8 139.1 -4 1 1 0 00 27 34 00 30 34 --- 15 01 52 75.0 -35.5 0.8 137.1 165 F 1 0 00 27 34 00 30 44 J1405+4056 15 02 02 75.5 -47.7 0.9 123.8 -4 1 1 0 00 30 34 00 31 34 =1403+411 15 02 52 75.4 -48.1 1.0 123.3 46 F 1 0 00 30 34 00 31 44 J1413+4339 15 03 02 74.9 -36.1 0.8 136.4 -4 1 1 0 00 31 34 00 34 33 --- 15 05 52 74.5 -37.4 0.9 134.5 165 F 1 0 00 31 34 00 34 43 J1405+4056 15 06 02 74.9 -49.3 1.0 121.6 -4 1 1 0 00 34 33 00 35 33 =1403+411 15 06 52 74.8 -49.6 1.0 121.2 46 F 1 0 00 34 33 00 35 43 J1413+4339 15 07 02 74.3 -38.0 0.9 133.8 -4 1 1 0 00 35 33 00 38 33 --- 15 09 52 74.0 -39.3 0.9 132.1 166 F 1 0 00 35 33 00 38 42 J1405+4056 15 10 02 74.2 -50.8 1.1 119.5 -4 1 1 0 00 38 33 00 39 32 =1403+411 15 10 52 74.1 -51.1 1.1 119.1 46 F 1 0 00 38 33 00 39 42 J1413+4339 15 11 02 73.8 -39.8 1.0 131.4 -4 1 1 0 00 39 32 00 42 32 --- 15 13 52 73.4 -41.0 1.0 129.8 166 F 1 0 00 39 32 00 42 42 J1405+4056 15 14 02 73.6 -52.1 1.1 117.6 -3 1 1 0 00 42 32 00 43 32 =1403+411 15 14 52 73.4 -52.3 1.2 117.3 46 F 1 0 00 42 32 00 43 42 J1413+4339 15 15 02 73.3 -41.4 1.0 129.1 -3 1 1 0 00 43 32 00 46 31 --- 15 17 52 72.9 -42.5 1.1 127.6 166 F 1 0 00 43 32 00 46 41 J1405+4056 15 18 02 72.9 -53.3 1.2 115.9 -3 1 1 0 00 46 31 00 47 31 =1403+411 15 18 52 72.8 -53.5 1.2 115.5 47 F 1 0 00 46 31 00 47 41 J1413+4339 15 19 02 72.7 -42.9 1.1 127.0 -3 1 1 0 00 47 31 00 50 31 --- 15 21 52 72.3 -44.0 1.1 125.5 166 F 1 0 00 47 31 00 50 41 J1405+4056 15 22 02 72.2 -54.3 1.3 114.2 -3 1 1 0 00 50 31 00 51 30 =1403+411 15 22 52 72.1 -54.5 1.3 113.8 47 F 1 0 00 50 31 00 51 40 J1413+4339 15 23 02 72.1 -44.4 1.2 125.0 -3 1 1 0 00 51 30 00 54 30 --- 15 25 52 71.7 -45.3 1.2 123.6 167 F 1 0 00 51 30 Schedule for VLBA_KP (Code Kp ) 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 26 02 71.5 -55.3 1.3 112.6 -3 1 1 0 00 54 30 00 55 30 =1403+411 15 26 52 71.4 -55.5 1.4 112.3 47 F 1 0 00 54 30 00 55 40 J1413+4339 15 27 02 71.5 -45.6 1.2 123.0 -3 1 1 0 00 55 30 00 58 29 --- 15 29 52 71.1 -46.5 1.3 121.7 167 F 1 0 00 55 30 00 58 39 J1405+4056 15 30 02 70.8 -56.2 1.4 111.1 -2 1 1 0 00 58 29 00 59 29 =1403+411 15 30 52 70.7 -56.3 1.4 110.8 47 F 1 0 00 58 29 00 59 39 J1413+4339 15 31 02 70.9 -46.8 1.3 121.2 -2 1 1 0 00 59 29 01 02 29 --- 15 33 52 70.4 -47.6 1.3 120.0 167 F 1 0 00 59 29 01 02 39 J1405+4056 15 34 02 70.1 -57.0 1.5 109.7 -2 1 1 0 01 02 29 01 03 28 =1403+411 15 34 52 70.0 -57.1 1.5 109.5 48 F 1 0 01 02 29 01 03 38 J1413+4339 15 35 02 70.3 -47.9 1.4 119.5 -2 1 1 0 01 03 28 01 06 28 --- 15 37 52 69.8 -48.7 1.4 118.3 167 F 1 0 01 03 28 01 06 38 J1405+4056 15 38 02 69.4 -57.7 1.5 108.4 -2 1 1 0 01 06 28 01 07 28 =1403+411 15 38 52 69.3 -57.8 1.6 108.1 48 F 1 0 01 06 28 01 07 38 J1413+4339 15 39 02 69.6 -49.0 1.4 117.8 -2 1 1 0 01 07 28 01 10 27 --- 15 41 52 69.2 -49.6 1.5 116.7 168 F 1 0 01 07 28 01 10 37 J1405+4056 15 42 02 68.7 -58.3 1.6 107.2 -2 1 1 0 01 10 27 01 11 27 =1403+411 15 42 52 68.5 -58.4 1.6 106.9 48 F 1 0 01 10 27 01 11 37 J1413+4339 15 43 02 69.0 -49.9 1.5 116.3 -2 1 1 0 01 11 27 01 14 27 --- 15 45 52 68.5 -50.5 1.5 115.2 168 F 1 0 01 11 27 01 14 37 J1405+4056 15 46 02 68.0 -58.9 1.7 106.0 -2 1 1 0 01 14 27 01 15 26 =1403+411 15 46 52 67.8 -59.0 1.7 105.7 48 F 1 0 01 14 27 01 15 36 J1413+4339 15 47 02 68.3 -50.7 1.6 114.8 -2 1 1 0 01 15 26 01 18 26 --- 15 49 52 67.9 -51.3 1.6 113.8 168 F 1 0 01 15 26 01 18 36 J1405+4056 15 50 02 67.2 -59.4 1.7 104.8 -1 1 1 0 01 18 26 01 19 26 =1403+411 15 50 52 67.1 -59.5 1.8 104.6 48 F 1 0 01 18 26 01 19 36 J1413+4339 15 51 02 67.7 -51.5 1.6 113.4 -1 1 1 0 01 19 26 01 22 25 --- 15 53 52 67.2 -52.0 1.7 112.4 168 F 1 0 01 19 26 Schedule for VLBA_KP (Code Kp ) 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 15 56 02 75.9 52.3 -1.0 -119.1 54 1 1 0 01 24 20 01 29 24 =1652+398 16 00 52 76.7 50.4 -0.9 -121.8 289 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: 7 Station: VLBA_KP 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: 7 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