COVER INFORMATION Station: MEDICINA (Code Mc ) Experiment: Confirmation of close dual quasars at z=0.6-2.5 Exp. Code: ES103I Schedule Version: 2.00 Processed by SCHED version: 11.60 Release 11.6; April 2020 PI: Yiping SHU Address: Purple Mountain Observatory, Chinese Academy of Sciences No. 10 Yuanhua Road Nanjing China Phone: +86 15946854256 EMAIL: yiping.shu@pmo.ac.cn Fax: Phone during observation: +86 15946854256 Observing mode: vlbi Notes: # Please turn PHASE CAL ON # COVER LETTER: Schedule for MEDICINA (Code Mc ) Page 2 Confirmation of close dual quasars at z=0.6-2.5 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Tue 28 Feb 2023 Day 59 --- Next scan frequencies: 8319.49 8319.49 8319.49 8319.49 8383.49 8383.49 8383.49 8383.49 8447.49 8447.49 8447.49 8447.49 8511.49 8511.49 8511.49 8511.49 Next BBC frequencies: 239.49 239.49 239.49 239.49 303.49 303.49 303.49 303.49 367.49 367.49 367.49 367.49 431.49 431.49 431.49 431.49 Next scan bandwidths: 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 17 00 00 J0927+3902 04 19 37 34.3 426.6 -5.1 -57.3 0 0 17 00 00 17 05 00 =4C39.25 04 24 38 35.1 427.3 -5.1 -57.7 300 77 17 00 01 17 06 00 J0905+4850 04 25 38 43.3 418.5 -4.7 -67.2 39 77 17 06 00 17 11 00 =0902+490 04 30 39 44.0 418.9 -4.6 -67.9 300 155 17 06 01 17 11 00 SDSSJ0910+49 04 30 39 43.5 418.0 -4.7 -67.6 -6 155 No stop 17 14 00 --- 04 33 39 43.9 418.3 -4.6 -68.0 174 201 17 11 01 17 14 30 J0905+4850 04 34 09 44.6 419.2 -4.5 -68.3 24 201 17 14 30 17 16 30 =0902+490 04 36 10 44.9 419.4 -4.5 -68.6 120 232 17 14 31 17 16 30 SDSSJ0910+49 04 36 10 44.3 418.5 -4.6 -68.3 -6 232 No stop 17 19 30 --- 04 39 10 44.8 418.7 -4.5 -68.7 174 278 17 16 31 17 19 30 J0905+4850 04 39 10 45.3 419.6 -4.5 -68.9 -6 278 No stop 17 21 30 =0902+490 04 41 10 45.6 419.8 -4.4 -69.2 114 309 17 19 31 17 21 30 SDSSJ0910+49 04 41 10 45.1 418.9 -4.5 -69.0 -6 309 No stop 17 24 30 --- 04 44 11 45.5 419.1 -4.5 -69.4 174 356 17 21 31 17 25 00 J0905+4850 04 44 41 46.2 420.1 -4.4 -69.7 24 356 17 25 00 17 27 00 =0902+490 04 46 41 46.5 420.3 -4.3 -69.9 120 386 17 25 01 17 27 00 SDSSJ0910+49 04 46 41 45.9 419.4 -4.4 -69.7 -6 386 No stop 17 30 00 --- 04 49 42 46.4 419.6 -4.4 -70.1 174 433 17 27 01 17 30 00 J0905+4850 04 49 42 46.9 420.5 -4.3 -70.3 -6 433 No stop 17 32 00 =0902+490 04 51 42 47.3 420.7 -4.3 -70.6 114 464 17 30 01 17 32 00 SDSSJ0910+49 04 51 42 46.7 419.8 -4.3 -70.4 -6 464 No stop 17 35 00 --- 04 54 43 47.1 420.0 -4.3 -70.8 174 510 17 32 01 17 35 30 J0905+4850 04 55 13 47.8 421.0 -4.2 -71.0 24 510 17 35 30 17 37 30 =0902+490 04 57 13 48.1 421.1 -4.2 -71.3 120 541 17 35 31 17 37 30 SDSSJ0910+49 04 57 13 47.5 420.2 -4.2 -71.1 -6 541 No stop 17 40 30 --- 05 00 14 48.0 420.4 -4.2 -71.5 174 587 17 37 31 Schedule for MEDICINA (Code Mc ) Page 3 Confirmation of close dual quasars at z=0.6-2.5 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Tue 28 Feb 2023 Day 59 --- 17 40 30 J0905+4850 05 00 14 48.6 421.4 -4.1 -71.7 -6 587 No stop 17 42 30 =0902+490 05 02 14 48.9 421.5 -4.1 -71.9 114 618 17 40 31 17 42 30 SDSSJ0910+49 05 02 14 48.3 420.6 -4.2 -71.7 -6 618 No stop 17 45 30 --- 05 05 14 48.8 420.8 -4.1 -72.1 174 665 17 42 31 17 46 00 J0905+4850 05 05 45 49.5 421.8 -4.0 -72.4 24 665 17 46 00 17 48 00 =0902+490 05 07 45 49.8 421.9 -4.0 -72.6 120 696 17 46 01 17 48 00 SDSSJ0910+49 05 07 45 49.2 421.0 -4.1 -72.5 -6 696 No stop 17 51 00 --- 05 10 45 49.6 421.2 -4.0 -72.9 174 742 17 48 01 17 51 00 J0905+4850 05 10 45 50.2 422.2 -3.9 -73.0 -6 742 No stop 17 53 00 =0902+490 05 12 46 50.6 422.3 -3.9 -73.3 114 773 17 51 01 17 53 00 SDSSJ0910+49 05 12 46 50.0 421.4 -4.0 -73.1 -6 773 No stop 17 56 00 --- 05 15 46 50.4 421.6 -3.9 -73.5 174 819 17 53 01 17 56 30 J0905+4850 05 16 16 51.1 422.6 -3.8 -73.7 24 819 17 56 30 17 58 30 =0902+490 05 18 17 51.4 422.7 -3.8 -74.0 120 850 17 56 31 17 58 30 SDSSJ0910+49 05 18 17 50.8 421.8 -3.9 -73.9 -6 850 No stop 18 01 30 --- 05 21 17 51.3 422.0 -3.8 -74.3 174 897 17 58 31 18 01 30 J0905+4850 05 21 17 51.9 422.9 -3.8 -74.4 -6 897 No stop 18 03 30 =0902+490 05 23 17 52.2 423.1 -3.7 -74.7 114 927 18 01 31 18 03 30 SDSSJ0910+49 05 23 17 51.6 422.1 -3.8 -74.5 -6 927 No stop 18 06 30 --- 05 26 18 52.1 422.3 -3.8 -74.9 174 974 18 03 31 18 07 00 J0905+4850 05 26 48 52.8 423.3 -3.7 -75.1 24 974 18 07 00 18 09 00 =0902+490 05 28 48 53.1 423.5 -3.6 -75.4 120 1005 18 07 01 18 09 00 SDSSJ0910+49 05 28 48 52.5 422.5 -3.7 -75.3 -6 1005 No stop 18 12 00 --- 05 31 49 53.0 422.7 -3.7 -75.7 174 1051 18 09 01 18 12 00 J0905+4850 05 31 49 53.6 423.7 -3.6 -75.8 -6 1051 No stop 18 14 00 =0902+490 05 33 49 53.9 423.8 -3.6 -76.1 114 1082 18 12 01 18 14 00 SDSSJ0910+49 05 33 49 53.3 422.9 -3.6 -76.0 -6 1082 No stop 18 17 00 --- 05 36 50 53.7 423.1 -3.6 -76.4 174 1128 18 14 01 18 17 30 J0905+4850 05 37 20 54.5 424.1 -3.5 -76.5 24 1128 18 17 30 18 19 30 =0902+490 05 39 20 54.8 424.2 -3.5 -76.8 120 1159 18 17 31 Schedule for MEDICINA (Code Mc ) Page 4 Confirmation of close dual quasars at z=0.6-2.5 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Tue 28 Feb 2023 Day 59 --- 18 19 30 SDSSJ0910+49 05 39 20 54.1 423.2 -3.5 -76.7 -6 1159 No stop 18 22 30 --- 05 42 21 54.6 423.4 -3.5 -77.1 174 1206 18 19 31 18 22 30 J0905+4850 05 42 21 55.3 424.4 -3.4 -77.2 -6 1206 No stop 18 24 30 =0902+490 05 44 21 55.6 424.5 -3.4 -77.5 114 1237 18 22 31 18 24 30 SDSSJ0910+49 05 44 21 54.9 423.5 -3.5 -77.4 -6 1237 No stop 18 27 30 --- 05 47 21 55.4 423.7 -3.4 -77.8 174 1283 18 24 31 18 28 00 J0905+4850 05 47 51 56.2 424.7 -3.3 -78.0 24 1283 18 28 00 18 30 00 =0902+490 05 49 52 56.5 424.8 -3.3 -78.2 120 1314 18 28 01 18 30 00 SDSSJ0910+49 05 49 52 55.8 423.9 -3.4 -78.2 -6 1314 No stop 18 33 00 --- 05 52 52 56.3 424.0 -3.3 -78.6 174 1360 18 30 01 18 33 00 J0905+4850 05 52 52 57.0 425.0 -3.2 -78.6 -6 1360 No stop 18 35 00 =0902+490 05 54 53 57.3 425.1 -3.2 -78.9 114 1391 18 33 01 18 35 00 SDSSJ0910+49 05 54 53 56.6 424.2 -3.3 -78.9 -6 1391 No stop 18 38 00 --- 05 57 53 57.1 424.3 -3.2 -79.3 174 1438 18 35 01 18 38 30 J0905+4850 05 58 23 57.9 425.4 -3.1 -79.4 24 1438 18 38 30 18 40 30 =0902+490 06 00 23 58.2 425.5 -3.1 -79.7 120 1469 18 38 31 18 40 30 SDSSJ0910+49 06 00 23 57.5 424.5 -3.2 -79.7 -6 1469 No stop 18 43 30 --- 06 03 24 58.0 424.6 -3.1 -80.1 174 1515 18 40 31 18 43 30 J0905+4850 06 03 24 58.7 425.6 -3.1 -80.1 -6 1515 No stop 18 45 30 =0902+490 06 05 24 59.0 425.7 -3.0 -80.4 114 1546 18 43 31 18 45 30 SDSSJ0910+49 06 05 24 58.3 424.7 -3.1 -80.4 -6 1546 No stop 18 48 30 --- 06 08 25 58.8 424.9 -3.1 -80.8 174 1592 18 45 31 18 49 00 J0905+4850 06 08 55 59.6 425.9 -3.0 -80.9 24 1592 18 49 00 18 51 00 =0902+490 06 10 55 59.9 426.0 -2.9 -81.2 120 1623 18 49 01 18 51 00 SDSSJ0910+49 06 10 55 59.2 425.0 -3.0 -81.2 -6 1623 No stop 18 54 00 --- 06 13 56 59.7 425.2 -3.0 -81.6 174 1669 18 51 01 18 54 00 J0905+4850 06 13 56 60.4 426.2 -2.9 -81.6 -6 1669 No stop 18 56 00 =0902+490 06 15 56 60.7 426.3 -2.9 -81.9 114 1700 18 54 01 18 57 00 J0927+3902 06 16 56 54.3 441.9 -3.2 -65.2 35 1700 18 57 00 19 02 00 =4C39.25 06 21 57 55.2 442.6 -3.1 -65.4 300 1778 18 57 01 Schedule for MEDICINA (Code Mc ) Page 5 Confirmation of close dual quasars at z=0.6-2.5 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Tue 28 Feb 2023 Day 59 --- 19 03 00 J0905+4850 06 22 57 61.9 426.6 -2.7 -83.0 35 1778 19 03 00 19 08 00 =0902+490 06 27 58 62.7 426.8 -2.7 -83.7 300 1855 19 03 01 19 08 00 SDSSJ0910+49 06 27 58 62.0 425.8 -2.7 -83.8 -6 1855 No stop 19 11 00 --- 06 30 58 62.5 425.9 -2.7 -84.2 174 1901 19 08 01 19 11 30 J0905+4850 06 31 29 63.3 426.9 -2.6 -84.3 24 1901 19 11 30 19 13 30 =0902+490 06 33 29 63.6 427.0 -2.6 -84.6 120 1932 19 11 31 19 13 30 SDSSJ0910+49 06 33 29 62.9 426.0 -2.6 -84.6 -6 1932 No stop 19 16 30 --- 06 36 29 63.4 426.1 -2.6 -85.1 174 1979 19 13 31 19 16 30 J0905+4850 06 36 29 64.1 427.1 -2.5 -85.0 -6 1979 No stop 19 18 30 =0902+490 06 38 30 64.4 427.2 -2.5 -85.4 114 2010 19 16 31 19 18 30 SDSSJ0910+49 06 38 30 63.7 426.1 -2.6 -85.4 -6 2010 No stop 19 21 30 --- 06 41 30 64.2 426.2 -2.5 -85.9 174 2056 19 18 31 19 22 00 J0905+4850 06 42 00 65.0 427.3 -2.4 -85.9 24 2056 19 22 00 19 24 00 =0902+490 06 44 01 65.3 427.3 -2.4 -86.3 120 2087 19 22 01 19 24 00 SDSSJ0910+49 06 44 01 64.6 426.3 -2.5 -86.4 -6 2087 No stop 19 27 00 --- 06 47 01 65.1 426.3 -2.4 -86.9 174 2133 19 24 01 19 27 00 J0905+4850 06 47 01 65.8 427.4 -2.3 -86.8 -6 2133 No stop 19 29 00 =0902+490 06 49 01 66.1 427.4 -2.3 -87.1 114 2164 19 27 01 19 29 00 SDSSJ0910+49 06 49 01 65.4 426.4 -2.4 -87.2 -6 2164 No stop 19 32 00 --- 06 52 02 65.9 426.4 -2.3 -87.7 174 2211 19 29 01 19 32 30 J0905+4850 06 52 32 66.7 427.5 -2.2 -87.7 24 2211 19 32 30 19 34 30 =0902+490 06 54 32 67.0 427.5 -2.2 -88.0 120 2241 19 32 31 19 34 30 SDSSJ0910+49 06 54 32 66.3 426.5 -2.3 -88.2 -6 2241 No stop 19 37 30 --- 06 57 33 66.8 426.5 -2.2 -88.7 174 2288 19 34 31 19 37 30 J0905+4850 06 57 33 67.5 427.6 -2.2 -88.6 -6 2288 No stop 19 39 30 =0902+490 06 59 33 67.9 427.6 -2.1 -88.9 114 2319 19 37 31 19 39 30 SDSSJ0910+49 06 59 33 67.1 426.5 -2.2 -89.1 -6 2319 No stop 19 42 30 --- 07 02 34 67.6 426.5 -2.2 -89.6 174 2365 19 39 31 19 43 00 J0905+4850 07 03 04 68.5 427.6 -2.1 -89.6 24 2365 19 43 00 19 45 00 =0902+490 07 05 04 68.8 427.6 -2.0 -89.9 120 2396 19 43 01 Schedule for MEDICINA (Code Mc ) Page 6 Confirmation of close dual quasars at z=0.6-2.5 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Tue 28 Feb 2023 Day 59 --- 19 45 00 SDSSJ0910+49 07 05 04 68.0 426.5 -2.1 -90.1 -6 2396 No stop 19 48 00 --- 07 08 05 68.5 426.5 -2.1 -90.7 174 2442 19 45 01 19 48 00 J0905+4850 07 08 05 69.3 427.6 -2.0 -90.5 -6 2442 No stop 19 50 00 =0902+490 07 10 05 69.6 427.6 -1.9 -90.9 114 2473 19 48 01 19 50 00 SDSSJ0910+49 07 10 05 68.9 426.5 -2.0 -91.1 -6 2473 No stop 19 53 00 --- 07 13 05 69.3 426.5 -2.0 -91.7 174 2520 19 50 01 19 53 30 J0905+4850 07 13 35 70.2 427.6 -1.9 -91.6 24 2520 19 53 30 19 55 30 =0902+490 07 15 36 70.5 427.5 -1.9 -92.0 120 2551 19 53 31 19 55 30 SDSSJ0910+49 07 15 36 69.8 426.4 -1.9 -92.2 -6 2551 No stop 19 58 30 --- 07 18 36 70.2 426.4 -1.9 -92.8 174 2597 19 55 31 19 58 30 J0905+4850 07 18 36 71.0 427.5 -1.8 -92.6 -6 2597 No stop 20 00 30 =0902+490 07 20 37 71.3 427.4 -1.8 -93.1 114 2628 19 58 31 20 00 30 SDSSJ0910+49 07 20 37 70.6 426.3 -1.9 -93.2 -6 2628 No stop 20 03 30 --- 07 23 37 71.1 426.2 -1.8 -93.9 174 2674 20 00 31 20 04 00 J0905+4850 07 24 07 71.9 427.3 -1.7 -93.8 24 2674 20 04 00 20 06 00 =0902+490 07 26 08 72.3 427.2 -1.7 -94.3 120 2705 20 04 01 20 06 00 SDSSJ0910+49 07 26 08 71.5 426.1 -1.8 -94.4 -6 2705 No stop 20 09 00 --- 07 29 08 72.0 426.0 -1.7 -95.1 174 2752 20 06 01 20 09 00 J0905+4850 07 29 08 72.7 427.1 -1.6 -95.0 -6 2752 No stop 20 11 00 =0902+490 07 31 08 73.1 427.0 -1.6 -95.4 114 2782 20 09 01 20 11 00 SDSSJ0910+49 07 31 08 72.3 425.9 -1.7 -95.6 -6 2782 No stop 20 14 00 --- 07 34 09 72.8 425.7 -1.6 -96.3 174 2829 20 11 01 20 14 30 J0905+4850 07 34 39 73.6 426.8 -1.5 -96.3 24 2829 20 14 30 20 16 30 =0902+490 07 36 39 74.0 426.7 -1.5 -96.8 120 2860 20 14 31 20 16 30 SDSSJ0910+49 07 36 39 73.2 425.6 -1.6 -97.0 -6 2860 No stop 20 19 30 --- 07 39 40 73.7 425.3 -1.5 -97.8 174 2906 20 16 31 20 19 30 J0905+4850 07 39 40 74.5 426.4 -1.5 -97.6 -6 2906 No stop 20 21 30 =0902+490 07 41 40 74.8 426.3 -1.4 -98.1 114 2937 20 19 31 20 21 30 SDSSJ0910+49 07 41 40 74.0 425.2 -1.5 -98.3 -6 2937 No stop 20 24 30 --- 07 44 41 74.5 424.9 -1.4 -99.1 174 2983 20 21 31 Schedule for MEDICINA (Code Mc ) Page 7 Confirmation of close dual quasars at z=0.6-2.5 UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Tue 28 Feb 2023 Day 59 --- 20 25 00 J0905+4850 07 45 11 75.4 425.9 -1.4 -99.1 24 2983 20 25 00 20 27 00 =0902+490 07 47 11 75.7 425.7 -1.3 -99.7 120 3014 20 25 01 20 27 00 SDSSJ0910+49 07 47 11 74.9 424.7 -1.4 -99.8 -6 3014 No stop 20 30 00 --- 07 50 11 75.4 424.3 -1.4 -100.7 174 3061 20 27 01 20 30 00 J0905+4850 07 50 11 76.2 425.3 -1.3 -100.6 -6 3061 No stop 20 32 00 =0902+490 07 52 12 76.5 425.1 -1.2 -101.2 114 3092 20 30 01 20 32 00 SDSSJ0910+49 07 52 12 75.7 424.1 -1.3 -101.4 -6 3092 No stop 20 35 00 --- 07 55 12 76.2 423.6 -1.3 -102.3 174 3138 20 32 01 20 35 30 J0905+4850 07 55 42 77.1 424.6 -1.2 -102.4 24 3138 20 35 30 20 37 30 =0902+490 07 57 43 77.4 424.2 -1.2 -103.1 120 3169 20 35 31 20 37 30 SDSSJ0910+49 07 57 43 76.6 423.3 -1.2 -103.2 -6 3169 No stop 20 40 30 --- 08 00 43 77.1 422.7 -1.2 -104.3 174 3215 20 37 31 20 40 30 J0905+4850 08 00 43 77.9 423.7 -1.1 -104.2 -6 3215 No stop 20 42 30 =0902+490 08 02 44 78.2 423.3 -1.1 -105.0 114 3246 20 40 31 20 42 30 SDSSJ0910+49 08 02 44 77.4 422.4 -1.1 -105.0 -6 3246 No stop 20 45 30 --- 08 05 44 77.8 421.8 -1.1 -106.2 174 3293 20 42 31 20 46 00 J0905+4850 08 06 14 78.8 422.5 -1.0 -106.4 24 3293 20 46 00 20 48 00 =0902+490 08 08 14 79.1 422.0 -1.0 -107.3 120 3324 20 46 01 20 48 00 SDSSJ0910+49 08 08 14 78.2 421.2 -1.1 -107.2 -6 3324 No stop 20 51 00 --- 08 11 15 78.7 420.4 -1.0 -108.5 174 3370 20 48 01 20 51 00 J0905+4850 08 11 15 79.5 421.2 -0.9 -108.6 -6 3370 No stop 20 53 00 =0902+490 08 13 15 79.9 420.6 -0.9 -109.6 114 3401 20 51 01 20 54 00 J0927+3902 08 14 15 75.1 465.5 -1.2 -62.0 -4 3401 20 54 00 21 00 00 =4C39.25 08 20 16 76.1 467.8 -1.1 -60.8 356 3494 20 54 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess123.X2048 --- WARNING --- This group does not match an entry in the frequency catalog. This might be ok because the catalog is not complete. But be very careful to be sure that the setup is correct. Setup group: 5 Station: MEDICINA Total bit rate: 2048 Format: VDIF Bits per sample: 2 Sample rate: 64.000 Number of channels: 16 DBE type: DBBC_DDC Speedup factor: 1.00 Disk used to record data. 1st LO= 8080.00 8080.00 8080.00 8080.00 8080.00 8080.00 8080.00 8080.00 8080.00 8080.00 8080.00 8080.00 8080.00 8080.00 8080.00 8080.00 Net SB= L L U U L L U U L L U U L L U U IF SB = U U U U U U U U U U U U U U U U Pol. = RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP BBC = 9 1 9 1 10 2 10 2 11 3 11 3 12 4 12 4 BBC SB= L L U U L L U U L L U U L L U U IF = C1 A1 C1 A1 C1 A1 C1 A1 C1 A1 C1 A1 C1 A1 C1 A1 The following frequency sets based on these setups were used. Frequency Set: 3 Setup file default. Used with PCAL = off LO sum= 8319.49 8319.49 8319.49 8319.49 8383.49 8383.49 8383.49 8383.49 8447.49 8447.49 8447.49 8447.49 8511.49 8511.49 8511.49 8511.49 BBC fr= 239.49 239.49 239.49 239.49 303.49 303.49 303.49 303.49 367.49 367.49 367.49 367.49 431.49 431.49 431.49 431.49 Bandwd= 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 Matching frequency sets: 3 Track assignments are: track1= 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 barrel=roll_off POSITIONS OF SOURCES USED IN RECORDING SCANS Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) * SDSSJ0910+49 09 06 35.862881 * 09 10 02.590000 09 11 39.460810 0.00 49 27 13.94852 * 49 15 00.25000 49 09 24.57117 0.00 From catalog imbedded in main SCHED input file. 0902+490 09 02 00.374037 * 09 05 27.463885 09 07 04.469886 0.15 * J0905+4850 49 02 49.85961 * 48 50 49.96508 48 45 20.86542 0.15 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc GSFC 2016a X/S astro solution, 114 observations. 4C39.25 09 23 55.319216 * 09 27 03.013937 09 28 30.898934 0.31 * J0927+3902 39 15 23.56644 * 39 02 20.85185 38 56 20.17576 0.16 0923+392 /home/guest/rmc/SCHED/sched11.6/catalogs/sources.gsfc J0927+39 GSFC 2016a X/S astro solution, 250526 observations. SOURCE SCAN SUMMARY FOR SOURCES LISTED ABOVE Scan hours are for recording scans only. Baseline hours are only counted for scans above horizon at both ends. Source Setup file Frequency sets Observing hours (duplicates not shown) Scan Baseline SDSSJ0910+4sess123.X2048 1 2 3 4 5 6 7 9 2.000 64.825 J0905+4850 sess123.X2048 1 2 3 4 5 6 7 9 1.500 50.127 J0927+3902 sess123.X2048 1 2 3 4 5 6 7 9 0.267 9.474 EFFECT OF SOLAR CORONA 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) SDSSJ0910+49 134.2 J0905+4850 134.1 J0927+3902 144.4 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