COVER INFORMATION Station: VLBA_HN (Code Hn ) 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_HN (Code Hn ) 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 16 09 32 81.1 107.1 -0.7 -65.5 0 1 1 0 22 59 44 23 04 48 =1652+398 16 14 22 81.9 109.8 -0.7 -63.7 289 F 1 2028 22 59 57 23 06 58 J1405+4056 16 16 32 65.7 276.6 2.2 74.3 12 1 1 2028 23 06 43 23 07 47 =1403+411 16 17 22 65.5 276.7 2.2 74.3 50 F 1 2460 23 06 56 23 07 57 J1413+4339 16 17 32 67.6 282.5 2.1 81.0 0 1 1 2460 23 07 47 23 10 47 --- 16 20 22 67.1 282.7 2.1 80.7 170 F 1 3657 23 07 47 23 10 57 J1405+4056 16 20 32 64.9 277.0 2.3 74.1 0 1 1 3657 23 10 47 23 11 47 =1403+411 16 21 22 64.8 277.1 2.3 74.0 50 F 1 4056 23 10 47 23 11 57 J1413+4339 16 21 32 66.9 282.8 2.1 80.6 0 1 1 4056 23 11 47 23 14 46 --- 16 24 22 66.4 283.0 2.2 80.3 170 F 1 5253 23 11 47 23 14 56 J1405+4056 16 24 32 64.2 277.5 2.3 73.9 0 1 1 5253 23 14 46 23 15 46 =1403+411 16 25 22 64.1 277.6 2.3 73.8 50 F 1 5652 23 14 46 23 15 56 J1413+4339 16 25 32 66.2 283.1 2.2 80.2 0 1 1 5652 23 15 46 23 18 46 --- 16 28 22 65.7 283.3 2.2 79.9 170 F 1 6848 23 15 46 23 18 56 J1405+4056 16 28 32 63.5 278.0 2.4 73.7 0 1 1 6848 23 18 46 23 19 45 =1403+411 16 29 22 63.3 278.1 2.4 73.6 50 F 1 7247 23 18 46 23 19 55 J1413+4339 16 29 32 65.5 283.4 2.3 79.8 0 1 1 7247 23 19 45 23 22 45 --- 16 32 22 65.0 283.6 2.3 79.5 170 F 1 8444 23 19 45 23 22 55 J1405+4056 16 32 32 62.8 278.5 2.5 73.4 0 1 1 8444 23 22 45 23 23 45 =1403+411 16 33 22 62.6 278.6 2.5 73.4 50 F 1 8843 23 22 45 23 23 55 J1413+4339 16 33 32 64.8 283.7 2.3 79.4 0 1 1 8843 23 23 45 23 26 44 --- 16 36 22 64.3 283.9 2.4 79.1 170 F 1 10040 23 23 45 23 26 54 J1405+4056 16 36 32 62.0 279.0 2.5 73.2 0 1 1 10040 23 26 44 23 27 44 =1403+411 16 37 22 61.9 279.0 2.5 73.1 50 F 1 10439 23 26 44 23 27 54 J1413+4339 16 37 32 64.1 284.0 2.4 79.0 0 1 1 10439 23 27 44 23 30 44 --- 16 40 22 63.6 284.2 2.4 78.7 170 F 1 11635 23 27 44 Schedule for VLBA_HN (Code Hn ) 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 16 40 32 61.3 279.4 2.6 72.9 -1 1 1 11635 23 30 44 23 31 43 =1403+411 16 41 22 61.2 279.5 2.6 72.9 49 F 1 12034 23 30 44 23 31 53 J1413+4339 16 41 32 63.4 284.3 2.5 78.6 0 1 1 12034 23 31 43 23 34 43 --- 16 44 22 62.9 284.6 2.5 78.3 170 F 1 13231 23 31 43 23 34 53 J1405+4056 16 44 32 60.6 279.9 2.7 72.7 -1 1 1 13231 23 34 43 23 35 43 =1403+411 16 45 22 60.5 280.0 2.7 72.6 49 F 1 13630 23 34 43 23 35 53 J1413+4339 16 45 32 62.6 284.7 2.5 78.2 0 1 1 13630 23 35 43 23 38 42 --- 16 48 22 62.1 284.9 2.6 77.9 170 F 1 14827 23 35 43 23 38 52 J1405+4056 16 48 32 59.9 280.3 2.7 72.4 -1 1 1 14827 23 38 42 23 39 42 =1403+411 16 49 22 59.7 280.4 2.7 72.4 49 F 1 15226 23 38 42 23 39 52 J1413+4339 16 49 32 61.9 285.0 2.6 77.8 0 1 1 15226 23 39 42 23 42 42 --- 16 52 22 61.4 285.2 2.6 77.5 170 F 1 16422 23 39 42 23 42 52 J1405+4056 16 52 32 59.2 280.8 2.8 72.2 -1 1 1 16422 23 42 42 23 43 42 =1403+411 16 53 22 59.0 280.9 2.8 72.1 49 F 1 16821 23 42 42 23 43 51 J1413+4339 16 53 32 61.2 285.3 2.7 77.4 0 1 2 16821 23 43 42 23 46 41 --- 16 56 22 60.7 285.5 2.7 77.1 170 R 1 17182 23 43 42 23 46 51 J1405+4056 16 56 32 58.4 281.2 2.9 71.9 -1 1 2 17182 23 46 41 23 47 41 =1403+411 16 57 22 58.3 281.3 2.9 71.8 49 R 1 16783 23 46 41 23 47 51 J1413+4339 16 57 32 60.5 285.6 2.7 77.0 0 1 2 16783 23 47 41 23 50 40 --- 17 00 22 60.0 285.9 2.8 76.7 170 R 1 15586 23 47 41 23 50 50 J1405+4056 17 00 32 57.7 281.7 2.9 71.6 -1 1 2 15586 23 50 40 23 51 40 =1403+411 17 01 22 57.6 281.8 2.9 71.6 49 R 1 15188 23 50 40 23 51 50 J1413+4339 17 01 32 59.8 286.0 2.8 76.6 -1 1 2 15188 23 51 40 23 54 40 --- 17 04 22 59.3 286.2 2.8 76.3 169 R 1 13991 23 51 40 23 54 50 J1405+4056 17 04 32 57.0 282.1 3.0 71.3 -1 1 2 13991 23 54 40 23 55 40 =1403+411 17 05 22 56.9 282.2 3.0 71.3 49 R 1 13592 23 54 40 23 55 50 J1413+4339 17 05 32 59.1 286.3 2.9 76.2 -1 1 2 13592 23 55 40 23 58 39 --- 17 08 22 58.6 286.6 2.9 75.9 169 R 1 12395 23 55 40 Schedule for VLBA_HN (Code Hn ) 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 17 08 32 56.3 282.6 3.1 71.0 -1 1 2 12395 23 58 39 23 59 39 =1403+411 17 09 22 56.1 282.7 3.1 71.0 49 R 1 11996 23 58 39 --- Start: Sat 20 Aug 2005 Day 232 -- Stop: Sun 21 Aug 2005 Day 233 --- 23 59 49 J1413+4339 17 09 32 58.4 286.6 2.9 75.8 -1 1 2 11996 23 59 39 00 02 38 --- 17 12 22 57.9 286.9 3.0 75.5 169 R 1 10800 23 59 39 00 02 48 J1405+4056 17 12 32 55.6 283.0 3.1 70.8 -1 1 2 10800 00 02 38 00 03 38 =1403+411 17 13 22 55.4 283.1 3.1 70.7 49 R 1 10401 00 02 38 00 03 48 J1413+4339 17 13 32 57.7 287.0 3.0 75.4 -1 1 2 10401 00 03 38 00 06 38 --- 17 16 22 57.2 287.2 3.0 75.1 169 R 1 9204 00 03 38 00 06 48 J1405+4056 17 16 32 54.9 283.5 3.2 70.5 -1 1 2 9204 00 06 38 00 07 38 =1403+411 17 17 22 54.7 283.5 3.2 70.4 49 R 1 8805 00 06 38 00 07 48 J1413+4339 17 17 32 57.0 287.3 3.1 75.0 -1 1 2 8805 00 07 38 00 10 37 --- 17 20 22 56.5 287.6 3.1 74.7 169 R 1 7608 00 07 38 00 10 47 J1405+4056 17 20 32 54.2 283.9 3.3 70.2 -1 1 2 7608 00 10 37 00 11 37 =1403+411 17 21 22 54.0 284.0 3.3 70.1 49 R 1 7209 00 10 37 00 11 47 J1413+4339 17 21 32 56.3 287.7 3.1 74.6 -1 1 2 7209 00 11 37 00 14 36 --- 17 24 22 55.8 287.9 3.2 74.3 169 R 1 6013 00 11 37 00 14 46 J1405+4056 17 24 32 53.4 284.3 3.3 69.9 -1 1 2 6013 00 14 36 00 15 36 =1403+411 17 25 22 53.3 284.4 3.3 69.8 49 R 1 5614 00 14 36 00 15 46 J1413+4339 17 25 32 55.6 288.0 3.2 74.2 -1 1 2 5614 00 15 36 00 18 36 --- 17 28 22 55.1 288.3 3.2 73.9 169 R 1 4417 00 15 36 00 18 46 J1405+4056 17 28 32 52.7 284.8 3.4 69.6 -1 1 2 4417 00 18 36 00 19 36 =1403+411 17 29 22 52.6 284.9 3.4 69.5 49 R 1 4018 00 18 36 00 19 46 J1413+4339 17 29 32 54.9 288.4 3.3 73.8 -1 1 2 4018 00 19 36 00 22 35 --- 17 32 22 54.4 288.6 3.3 73.5 169 R 1 2821 00 19 36 00 22 45 J1405+4056 17 32 32 52.0 285.2 3.5 69.2 -1 1 2 2821 00 22 35 00 23 35 =1403+411 17 33 22 51.9 285.3 3.5 69.2 49 R 1 2423 00 22 35 00 23 45 J1413+4339 17 33 32 54.2 288.7 3.3 73.4 -1 1 2 2423 00 23 35 00 26 34 --- 17 36 22 53.7 289.0 3.4 73.1 169 R 1 1226 00 23 35 Schedule for VLBA_HN (Code Hn ) 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 17 36 32 51.3 285.6 3.5 68.9 -1 1 2 1226 00 26 34 00 27 34 =1403+411 17 37 22 51.2 285.7 3.5 68.9 49 R 1 827 00 26 34 00 27 44 J1413+4339 17 37 32 53.5 289.1 3.4 72.9 -1 1 3 827 00 27 34 00 30 34 --- 17 40 22 53.0 289.3 3.4 72.7 169 F 1 370 00 27 34 00 30 44 J1405+4056 17 40 32 50.6 286.1 3.6 68.6 -1 1 3 370 00 30 34 00 31 34 =1403+411 17 41 22 50.5 286.2 3.6 68.5 49 F 1 769 00 30 34 00 31 44 J1413+4339 17 41 32 52.8 289.4 3.5 72.5 -1 1 3 769 00 31 34 00 34 33 --- 17 44 22 52.4 289.7 3.5 72.3 169 F 1 1965 00 31 34 00 34 43 J1405+4056 17 44 32 49.9 286.5 3.7 68.3 -1 1 3 1965 00 34 33 00 35 33 =1403+411 17 45 22 49.8 286.6 3.7 68.2 49 F 1 2364 00 34 33 00 35 43 J1413+4339 17 45 32 52.2 289.8 3.5 72.1 -1 1 3 2364 00 35 33 00 38 33 --- 17 48 22 51.7 290.1 3.6 71.9 169 F 1 3561 00 35 33 00 38 42 J1405+4056 17 48 32 49.2 286.9 3.7 68.0 -1 1 3 3561 00 38 33 00 39 32 =1403+411 17 49 22 49.1 287.0 3.7 67.9 49 F 1 3960 00 38 33 00 39 42 J1413+4339 17 49 32 51.5 290.2 3.6 71.7 -1 1 3 3960 00 39 32 00 42 32 --- 17 52 22 51.0 290.4 3.6 71.4 169 F 1 5157 00 39 32 00 42 42 J1405+4056 17 52 32 48.5 287.4 3.8 67.6 -1 1 3 5157 00 42 32 00 43 32 =1403+411 17 53 22 48.4 287.5 3.8 67.6 49 F 1 5556 00 42 32 00 43 42 J1413+4339 17 53 32 50.8 290.5 3.7 71.3 -1 1 3 5556 00 43 32 00 46 31 --- 17 56 22 50.3 290.8 3.7 71.0 169 F 1 6752 00 43 32 00 46 41 J1405+4056 17 56 32 47.8 287.8 3.9 67.3 -1 1 3 6752 00 46 31 00 47 31 =1403+411 17 57 22 47.7 287.9 3.9 67.2 49 F 1 7151 00 46 31 00 47 41 J1413+4339 17 57 32 50.1 290.9 3.7 70.9 -1 1 3 7151 00 47 31 00 50 31 --- 18 00 22 49.6 291.2 3.8 70.6 169 F 1 8348 00 47 31 00 50 41 J1405+4056 18 00 32 47.1 288.2 3.9 67.0 -1 1 3 8348 00 50 31 00 51 30 =1403+411 18 01 22 47.0 288.3 3.9 66.9 49 F 1 8747 00 50 31 00 51 40 J1413+4339 18 01 32 49.4 291.3 3.8 70.5 -1 1 3 8747 00 51 30 00 54 30 --- 18 04 22 48.9 291.5 3.8 70.2 169 F 1 9944 00 51 30 Schedule for VLBA_HN (Code Hn ) 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 18 04 32 46.4 288.7 4.0 66.6 -1 1 3 9944 00 54 30 00 55 30 =1403+411 18 05 22 46.3 288.8 4.0 66.6 49 F 1 10343 00 54 30 00 55 40 J1413+4339 18 05 32 48.7 291.6 3.9 70.1 -1 1 3 10343 00 55 30 00 58 29 --- 18 08 22 48.3 291.9 3.9 69.8 169 F 1 11539 00 55 30 00 58 39 J1405+4056 18 08 32 45.7 289.1 4.1 66.3 -1 1 3 11539 00 58 29 00 59 29 =1403+411 18 09 22 45.6 289.2 4.1 66.2 49 F 1 11938 00 58 29 00 59 39 J1413+4339 18 09 32 48.1 292.0 3.9 69.7 -1 1 3 11938 00 59 29 01 02 29 --- 18 12 22 47.6 292.3 4.0 69.4 169 F 1 13135 00 59 29 01 02 39 J1405+4056 18 12 32 45.0 289.5 4.1 65.9 -1 1 3 13135 01 02 29 01 03 28 =1403+411 18 13 22 44.9 289.6 4.1 65.9 49 F 1 13534 01 02 29 01 03 38 J1413+4339 18 13 32 47.4 292.4 4.0 69.3 -1 1 3 13534 01 03 28 01 06 28 --- 18 16 22 46.9 292.7 4.0 69.0 169 F 1 14730 01 03 28 01 06 38 J1405+4056 18 16 32 44.4 290.0 4.2 65.6 -1 1 3 14730 01 06 28 01 07 28 =1403+411 18 17 22 44.2 290.1 4.2 65.5 49 F 1 15129 01 06 28 01 07 38 J1413+4339 18 17 32 46.7 292.8 4.1 68.9 -1 1 3 15129 01 07 28 01 10 27 --- 18 20 22 46.2 293.0 4.1 68.6 169 F 1 16326 01 07 28 01 10 37 J1405+4056 18 20 32 43.7 290.4 4.3 65.2 -1 1 3 16326 01 10 27 01 11 27 =1403+411 18 21 22 43.5 290.5 4.3 65.2 49 F 1 16725 01 10 27 01 11 37 J1413+4339 18 21 32 46.0 293.2 4.1 68.5 -1 1 4 16725 01 11 27 01 14 27 --- 18 24 22 45.6 293.4 4.2 68.2 169 R 1 17278 01 11 27 01 14 37 J1405+4056 18 24 32 43.0 290.9 4.3 64.9 -1 1 4 17278 01 14 27 01 15 26 =1403+411 18 25 22 42.8 290.9 4.3 64.8 49 R 1 16879 01 14 27 01 15 36 J1413+4339 18 25 32 45.4 293.5 4.2 68.0 -1 1 4 16879 01 15 26 01 18 26 --- 18 28 22 44.9 293.8 4.2 67.7 168 R 1 15683 01 15 26 01 18 36 J1405+4056 18 28 32 42.3 291.3 4.4 64.5 -1 1 4 15683 01 18 26 01 19 26 =1403+411 18 29 22 42.2 291.4 4.4 64.5 49 R 1 15284 01 18 26 01 19 36 J1413+4339 18 29 32 44.7 293.9 4.3 67.6 -1 1 4 15284 01 19 26 01 22 25 --- 18 32 22 44.2 294.2 4.3 67.3 168 R 1 14087 01 19 26 Schedule for VLBA_HN (Code Hn ) 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 18 34 32 71.0 269.0 1.7 72.2 70 1 4 14087 01 24 20 01 29 24 =1652+398 18 39 22 70.1 269.8 1.8 72.2 289 R 1 12059 01 24 33 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: 2 Station: VLBA_HN Total bit rate: 128 Format: VLBA1:4 Bits per sample: 2 Sample rate: 16.000 Number of channels: 4 Passes/head pos: 1 Speedup factor: 2.00 Tape used at high density at 80.000 ips. Time per pass is 44.00 minutes. 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: 2 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_auto 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