COVER INFORMATION Station: VLBA_NL (Code Nl ) 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_NL (Code Nl ) 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 51 11 66.8 84.7 -2.0 -75.0 0 1 1 0 22 59 44 23 04 48 =1652+398 14 56 01 67.7 85.3 -2.0 -75.2 289 F 1 2028 22 59 57 23 06 58 J1405+4056 14 58 11 80.1 269.5 0.9 80.8 1 1 1 2028 23 06 43 23 07 47 =1403+411 14 59 01 79.9 269.7 0.9 80.8 50 F 1 2460 23 06 56 23 07 57 J1413+4339 14 59 11 81.5 286.5 0.8 98.8 -7 1 1 2460 23 07 47 23 10 47 --- 15 02 01 81.0 286.0 0.8 97.8 162 F 1 3657 23 07 47 23 10 57 J1405+4056 15 02 11 79.3 270.2 0.9 80.8 -7 1 1 3657 23 10 47 23 11 47 =1403+411 15 03 01 79.2 270.3 1.0 80.8 43 F 1 4056 23 10 47 23 11 57 J1413+4339 15 03 11 80.8 285.8 0.8 97.4 -6 1 1 4056 23 11 47 23 14 46 --- 15 06 01 80.3 285.4 0.9 96.6 163 F 1 5253 23 11 47 23 14 56 J1405+4056 15 06 11 78.6 270.8 1.0 80.8 -6 1 1 5253 23 14 46 23 15 46 =1403+411 15 07 01 78.4 271.0 1.0 80.7 44 F 1 5652 23 14 46 23 15 56 J1413+4339 15 07 11 80.1 285.3 0.9 96.2 -6 1 1 5652 23 15 46 23 18 46 --- 15 10 01 79.5 285.0 0.9 95.5 164 F 1 6848 23 15 46 23 18 56 J1405+4056 15 10 11 77.8 271.4 1.1 80.7 -5 1 1 6848 23 18 46 23 19 45 =1403+411 15 11 01 77.7 271.5 1.1 80.7 45 F 1 7247 23 18 46 23 19 55 J1413+4339 15 11 11 79.3 284.9 1.0 95.2 -5 1 1 7247 23 19 45 23 22 45 --- 15 14 01 78.8 284.7 1.0 94.4 165 F 1 8444 23 19 45 23 22 55 J1405+4056 15 14 11 77.1 272.0 1.1 80.6 -4 1 1 8444 23 22 45 23 23 45 =1403+411 15 15 01 76.9 272.1 1.2 80.6 45 F 1 8843 23 22 45 23 23 55 J1413+4339 15 15 11 78.6 284.6 1.0 94.2 -4 1 1 8843 23 23 45 23 26 44 --- 15 18 01 78.1 284.4 1.1 93.5 165 F 1 10040 23 23 45 23 26 54 J1405+4056 15 18 11 76.3 272.5 1.2 80.4 -4 1 1 10040 23 26 44 23 27 44 =1403+411 15 19 01 76.2 272.6 1.2 80.4 46 F 1 10439 23 26 44 23 27 54 J1413+4339 15 19 11 77.9 284.4 1.1 93.3 -4 1 1 10439 23 27 44 23 30 44 --- 15 22 01 77.4 284.2 1.1 92.6 166 F 1 11635 23 27 44 Schedule for VLBA_NL (Code Nl ) 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 15 22 11 75.6 273.1 1.3 80.3 -3 1 1 11635 23 30 44 23 31 43 =1403+411 15 23 01 75.4 273.2 1.3 80.3 46 F 1 12034 23 30 44 23 31 53 J1413+4339 15 23 11 77.2 284.2 1.2 92.4 -3 1 1 12034 23 31 43 23 34 43 --- 15 26 01 76.7 284.1 1.2 91.8 166 F 1 13231 23 31 43 23 34 53 J1405+4056 15 26 11 74.8 273.6 1.3 80.1 -3 1 1 13231 23 34 43 23 35 43 =1403+411 15 27 01 74.7 273.7 1.4 80.1 47 F 1 13630 23 34 43 23 35 53 J1413+4339 15 27 11 76.4 284.1 1.2 91.6 -3 1 1 13630 23 35 43 23 38 42 --- 15 30 01 75.9 284.0 1.3 91.1 167 F 1 14827 23 35 43 23 38 52 J1405+4056 15 30 11 74.1 274.0 1.4 79.9 -3 1 1 14827 23 38 42 23 39 42 =1403+411 15 31 01 73.9 274.1 1.4 79.9 47 F 1 15226 23 38 42 23 39 52 J1413+4339 15 31 11 75.7 284.0 1.3 90.8 -3 1 1 15226 23 39 42 23 42 42 --- 15 34 01 75.2 284.0 1.3 90.3 167 F 1 16422 23 39 42 23 42 52 J1405+4056 15 34 11 73.4 274.5 1.5 79.7 -2 1 1 16422 23 42 42 23 43 42 =1403+411 15 35 01 73.2 274.6 1.5 79.7 48 F 1 16821 23 42 42 23 43 51 J1413+4339 15 35 11 75.0 284.0 1.4 90.1 -2 1 2 16821 23 43 42 23 46 41 --- 15 38 01 74.5 284.0 1.4 89.6 167 R 1 17182 23 43 42 23 46 51 J1405+4056 15 38 11 72.6 275.0 1.5 79.5 -2 1 2 17182 23 46 41 23 47 41 =1403+411 15 39 01 72.5 275.1 1.6 79.5 48 R 1 16783 23 46 41 23 47 51 J1413+4339 15 39 11 74.3 284.0 1.4 89.5 -2 1 2 16783 23 47 41 23 50 40 --- 15 42 01 73.8 284.0 1.5 89.0 168 R 1 15586 23 47 41 23 50 50 J1405+4056 15 42 11 71.9 275.4 1.6 79.3 -2 1 2 15586 23 50 40 23 51 40 =1403+411 15 43 01 71.7 275.5 1.6 79.3 48 R 1 15188 23 50 40 23 51 50 J1413+4339 15 43 11 73.6 284.0 1.5 88.8 -2 1 2 15188 23 51 40 23 54 40 --- 15 46 01 73.0 284.1 1.5 88.4 168 R 1 13991 23 51 40 23 54 50 J1405+4056 15 46 11 71.1 275.9 1.7 79.1 -1 1 2 13991 23 54 40 23 55 40 =1403+411 15 47 01 71.0 276.0 1.7 79.0 48 R 1 13592 23 54 40 23 55 50 J1413+4339 15 47 11 72.8 284.1 1.6 88.2 -1 1 2 13592 23 55 40 23 58 39 --- 15 50 01 72.3 284.2 1.6 87.7 168 R 1 12395 23 55 40 Schedule for VLBA_NL (Code Nl ) 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 50 11 70.4 276.3 1.7 78.8 -1 1 2 12395 23 58 39 23 59 39 =1403+411 15 51 01 70.2 276.4 1.8 78.8 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 15 51 11 72.1 284.2 1.6 87.6 -1 1 2 11996 23 59 39 00 02 38 --- 15 54 01 71.6 284.3 1.7 87.2 168 R 1 10800 23 59 39 00 02 48 J1405+4056 15 54 11 69.6 276.8 1.8 78.6 -1 1 2 10800 00 02 38 00 03 38 =1403+411 15 55 01 69.5 276.8 1.8 78.5 49 R 1 10401 00 02 38 00 03 48 J1413+4339 15 55 11 71.4 284.3 1.7 87.0 -1 1 2 10401 00 03 38 00 06 38 --- 15 58 01 70.9 284.4 1.7 86.6 169 R 1 9204 00 03 38 00 06 48 J1405+4056 15 58 11 68.9 277.2 1.9 78.3 -1 1 2 9204 00 06 38 00 07 38 =1403+411 15 59 01 68.7 277.3 1.9 78.3 49 R 1 8805 00 06 38 00 07 48 J1413+4339 15 59 11 70.7 284.4 1.8 86.4 -1 1 2 8805 00 07 38 00 10 37 --- 16 02 01 70.1 284.5 1.8 86.0 169 R 1 7608 00 07 38 00 10 47 J1405+4056 16 02 11 68.2 277.6 1.9 78.1 -1 1 2 7608 00 10 37 00 11 37 =1403+411 16 03 01 68.0 277.7 2.0 78.0 49 R 1 7209 00 10 37 00 11 47 J1413+4339 16 03 11 69.9 284.6 1.8 85.9 -1 1 2 7209 00 11 37 00 14 36 --- 16 06 01 69.4 284.7 1.9 85.5 169 R 1 6013 00 11 37 00 14 46 J1405+4056 16 06 11 67.4 278.0 2.0 77.8 0 1 2 6013 00 14 36 00 15 36 =1403+411 16 07 01 67.3 278.1 2.0 77.7 50 R 1 5614 00 14 36 00 15 46 J1413+4339 16 07 11 69.2 284.7 1.9 85.3 0 1 2 5614 00 15 36 00 18 36 --- 16 10 01 68.7 284.9 1.9 84.9 170 R 1 4417 00 15 36 00 18 46 J1405+4056 16 10 11 66.7 278.4 2.1 77.5 0 1 2 4417 00 18 36 00 19 36 =1403+411 16 11 01 66.5 278.5 2.1 77.5 50 R 1 4018 00 18 36 00 19 46 J1413+4339 16 11 11 68.5 284.9 2.0 84.8 0 1 2 4018 00 19 36 00 22 35 --- 16 14 01 68.0 285.0 2.0 84.4 170 R 1 2821 00 19 36 00 22 45 J1405+4056 16 14 11 65.9 278.8 2.1 77.3 0 1 2 2821 00 22 35 00 23 35 =1403+411 16 15 01 65.8 278.9 2.2 77.2 50 R 1 2423 00 22 35 00 23 45 J1413+4339 16 15 11 67.8 285.1 2.0 84.3 0 1 2 2423 00 23 35 00 26 34 --- 16 18 01 67.3 285.2 2.1 83.9 170 R 1 1226 00 23 35 Schedule for VLBA_NL (Code Nl ) 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 16 18 11 65.2 279.3 2.2 77.0 0 1 2 1226 00 26 34 00 27 34 =1403+411 16 19 01 65.1 279.3 2.2 76.9 50 R 1 827 00 26 34 00 27 44 J1413+4339 16 19 11 67.1 285.3 2.1 83.8 0 1 3 827 00 27 34 00 30 34 --- 16 22 01 66.5 285.4 2.1 83.4 170 F 1 370 00 27 34 00 30 44 J1405+4056 16 22 11 64.5 279.7 2.3 76.7 0 1 3 370 00 30 34 00 31 34 =1403+411 16 23 01 64.3 279.7 2.3 76.6 50 F 1 769 00 30 34 00 31 44 J1413+4339 16 23 11 66.3 285.5 2.2 83.3 0 1 3 769 00 31 34 00 34 33 --- 16 26 01 65.8 285.6 2.2 82.9 170 F 1 1965 00 31 34 00 34 43 J1405+4056 16 26 11 63.7 280.1 2.3 76.4 0 1 3 1965 00 34 33 00 35 33 =1403+411 16 27 01 63.6 280.1 2.4 76.3 50 F 1 2364 00 34 33 00 35 43 J1413+4339 16 27 11 65.6 285.7 2.2 82.8 0 1 3 2364 00 35 33 00 38 33 --- 16 30 01 65.1 285.9 2.3 82.4 170 F 1 3561 00 35 33 00 38 42 J1405+4056 16 30 11 63.0 280.5 2.4 76.1 0 1 3 3561 00 38 33 00 39 32 =1403+411 16 31 01 62.9 280.5 2.4 76.0 50 F 1 3960 00 38 33 00 39 42 J1413+4339 16 31 11 64.9 285.9 2.3 82.3 0 1 3 3960 00 39 32 00 42 32 --- 16 34 01 64.4 286.1 2.3 81.9 170 F 1 5157 00 39 32 00 42 42 J1405+4056 16 34 11 62.3 280.9 2.5 75.8 0 1 3 5157 00 42 32 00 43 32 =1403+411 16 35 01 62.1 280.9 2.5 75.7 50 F 1 5556 00 42 32 00 43 42 J1413+4339 16 35 11 64.2 286.2 2.4 81.8 0 1 3 5556 00 43 32 00 46 31 --- 16 38 01 63.7 286.3 2.4 81.5 170 F 1 6752 00 43 32 00 46 41 J1405+4056 16 38 11 61.5 281.3 2.5 75.5 0 1 3 6752 00 46 31 00 47 31 =1403+411 16 39 01 61.4 281.3 2.6 75.4 50 F 1 7151 00 46 31 00 47 41 J1413+4339 16 39 11 63.5 286.4 2.4 81.3 0 1 3 7151 00 47 31 00 50 31 --- 16 42 01 63.0 286.6 2.5 81.0 170 F 1 8348 00 47 31 00 50 41 J1405+4056 16 42 11 60.8 281.7 2.6 75.2 0 1 3 8348 00 50 31 00 51 30 =1403+411 16 43 01 60.7 281.7 2.6 75.1 50 F 1 8747 00 50 31 00 51 40 J1413+4339 16 43 11 62.8 286.7 2.5 80.9 0 1 3 8747 00 51 30 00 54 30 --- 16 46 01 62.2 286.8 2.5 80.5 170 F 1 9944 00 51 30 Schedule for VLBA_NL (Code Nl ) 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 16 46 11 60.1 282.1 2.7 74.9 0 1 3 9944 00 54 30 00 55 30 =1403+411 16 47 01 59.9 282.1 2.7 74.8 50 F 1 10343 00 54 30 00 55 40 J1413+4339 16 47 11 62.0 286.9 2.6 80.4 0 1 3 10343 00 55 30 00 58 29 --- 16 50 01 61.5 287.1 2.6 80.1 170 F 1 11539 00 55 30 00 58 39 J1405+4056 16 50 11 59.4 282.5 2.7 74.6 0 1 3 11539 00 58 29 00 59 29 =1403+411 16 51 01 59.2 282.5 2.8 74.5 50 F 1 11938 00 58 29 00 59 39 J1413+4339 16 51 11 61.3 287.2 2.6 79.9 0 1 3 11938 00 59 29 01 02 29 --- 16 54 01 60.8 287.4 2.7 79.6 170 F 1 13135 00 59 29 01 02 39 J1405+4056 16 54 11 58.6 282.8 2.8 74.2 0 1 3 13135 01 02 29 01 03 28 =1403+411 16 55 01 58.5 282.9 2.8 74.2 50 F 1 13534 01 02 29 01 03 38 J1413+4339 16 55 11 60.6 287.4 2.7 79.5 0 1 3 13534 01 03 28 01 06 28 --- 16 58 01 60.1 287.6 2.7 79.2 170 F 1 14730 01 03 28 01 06 38 J1405+4056 16 58 11 57.9 283.2 2.9 73.9 0 1 3 14730 01 06 28 01 07 28 =1403+411 16 59 01 57.7 283.3 2.9 73.9 50 F 1 15129 01 06 28 01 07 38 J1413+4339 16 59 11 59.9 287.7 2.8 79.0 0 1 3 15129 01 07 28 01 10 27 --- 17 02 01 59.4 287.9 2.8 78.7 170 F 1 16326 01 07 28 01 10 37 J1405+4056 17 02 11 57.2 283.6 2.9 73.6 0 1 3 16326 01 10 27 01 11 27 =1403+411 17 03 01 57.0 283.7 3.0 73.5 50 F 1 16725 01 10 27 01 11 37 J1413+4339 17 03 11 59.2 288.0 2.8 78.6 0 1 4 16725 01 11 27 01 14 27 --- 17 06 01 58.7 288.2 2.9 78.3 170 R 1 17278 01 11 27 01 14 37 J1405+4056 17 06 11 56.5 284.0 3.0 73.3 -1 1 4 17278 01 14 27 01 15 26 =1403+411 17 07 01 56.3 284.1 3.0 73.2 49 R 1 16879 01 14 27 01 15 36 J1413+4339 17 07 11 58.5 288.3 2.9 78.1 0 1 4 16879 01 15 26 01 18 26 --- 17 10 01 58.0 288.5 2.9 77.8 170 R 1 15683 01 15 26 01 18 36 J1405+4056 17 10 11 55.7 284.4 3.1 72.9 -1 1 4 15683 01 18 26 01 19 26 =1403+411 17 11 01 55.6 284.5 3.1 72.9 49 R 1 15284 01 18 26 01 19 36 J1413+4339 17 11 11 57.8 288.6 3.0 77.7 0 1 4 15284 01 19 26 01 22 25 --- 17 14 01 57.3 288.8 3.0 77.4 170 R 1 14087 01 19 26 Schedule for VLBA_NL (Code Nl ) 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 17 16 11 85.4 246.1 0.4 62.5 67 1 4 14087 01 24 20 01 29 24 =1652+398 17 21 01 84.5 250.6 0.4 66.2 289 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: 3 Station: VLBA_NL 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: 3 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