COVER INFORMATION Station: MEDICINA (Code Mc ) Experiment: Confirmation of close dual quasars at z=0.6-2.5 Exp. Code: ES103G 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 ---------------------------------------------------------------------------------------- --- Thu 23 Feb 2023 Day 54 --- Next scan frequencies: 4830.49 4830.49 4830.49 4830.49 4894.49 4894.49 4894.49 4894.49 4958.49 4958.49 4958.49 4958.49 5022.49 5022.49 5022.49 5022.49 Next BBC frequencies: 230.49 230.49 230.49 230.49 294.49 294.49 294.49 294.49 358.49 358.49 358.49 358.49 422.49 422.49 422.49 422.49 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 16 30 00 J0927+3902 03 29 49 26.3 420.2 -6.0 -52.7 0 0 16 30 00 16 35 00 =4C39.25 03 34 50 27.1 420.9 -5.9 -53.2 300 77 16 30 01 16 36 00 J0905+4850 03 35 50 35.9 413.8 -5.5 -60.8 38 77 16 36 00 16 41 00 =0902+490 03 40 51 36.6 414.3 -5.4 -61.5 300 155 16 36 01 16 41 00 SDSSJ0910+49 03 40 51 36.1 413.4 -5.5 -61.1 -5 155 No stop 16 44 00 --- 03 43 52 36.6 413.7 -5.5 -61.5 175 201 16 41 01 16 44 30 J0905+4850 03 44 22 37.1 414.7 -5.4 -61.9 25 201 16 44 30 16 46 30 =0902+490 03 46 22 37.4 414.9 -5.3 -62.2 120 232 16 44 31 16 46 30 SDSSJ0910+49 03 46 22 36.9 414.0 -5.4 -61.8 -5 232 No stop 16 49 30 --- 03 49 22 37.4 414.3 -5.4 -62.2 175 278 16 46 31 16 49 30 J0905+4850 03 49 22 37.8 415.1 -5.3 -62.6 -6 278 No stop 16 51 30 =0902+490 03 51 23 38.1 415.3 -5.3 -62.8 114 309 16 49 31 16 51 30 SDSSJ0910+49 03 51 23 37.7 414.5 -5.3 -62.5 -5 309 No stop 16 54 30 --- 03 54 23 38.1 414.7 -5.3 -62.9 175 356 16 51 31 16 55 00 J0905+4850 03 54 53 38.7 415.7 -5.2 -63.3 24 356 16 55 00 16 57 00 =0902+490 03 56 54 38.9 415.9 -5.2 -63.5 120 386 16 55 01 16 57 00 SDSSJ0910+49 03 56 54 38.5 415.0 -5.2 -63.2 -6 386 No stop 17 00 00 --- 03 59 54 38.9 415.3 -5.2 -63.6 174 433 16 57 01 17 00 00 J0905+4850 03 59 54 39.4 416.1 -5.1 -63.9 -6 433 No stop 17 02 00 =0902+490 04 01 55 39.7 416.3 -5.1 -64.2 114 464 17 00 01 17 02 00 SDSSJ0910+49 04 01 55 39.2 415.4 -5.2 -63.9 -6 464 No stop 17 05 00 --- 04 04 55 39.6 415.7 -5.1 -64.3 174 510 17 02 01 17 05 30 J0905+4850 04 05 25 40.2 416.7 -5.0 -64.6 24 510 17 05 30 17 07 30 =0902+490 04 07 25 40.5 416.8 -5.0 -64.9 120 541 17 05 31 17 07 30 SDSSJ0910+49 04 07 25 40.0 416.0 -5.1 -64.6 -6 541 No stop 17 10 30 --- 04 10 26 40.4 416.2 -5.0 -65.0 174 587 17 07 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 ---------------------------------------------------------------------------------------- --- Thu 23 Feb 2023 Day 54 --- 17 10 30 J0905+4850 04 10 26 41.0 417.1 -4.9 -65.3 -6 587 No stop 17 12 30 =0902+490 04 12 26 41.3 417.3 -4.9 -65.5 114 618 17 10 31 17 12 30 SDSSJ0910+49 04 12 26 40.7 416.4 -5.0 -65.3 -6 618 No stop 17 15 30 --- 04 15 27 41.2 416.7 -4.9 -65.6 174 665 17 12 31 17 16 00 J0905+4850 04 15 57 41.8 417.6 -4.9 -66.0 24 665 17 16 00 17 18 00 =0902+490 04 17 57 42.1 417.8 -4.8 -66.2 120 696 17 16 01 17 18 00 SDSSJ0910+49 04 17 57 41.6 416.9 -4.9 -66.0 -6 696 No stop 17 21 00 --- 04 20 58 42.0 417.2 -4.8 -66.4 174 742 17 18 01 17 21 00 J0905+4850 04 20 58 42.5 418.1 -4.8 -66.6 -6 742 No stop 17 23 00 =0902+490 04 22 58 42.8 418.2 -4.7 -66.9 114 773 17 21 01 17 23 00 SDSSJ0910+49 04 22 58 42.3 417.3 -4.8 -66.6 -6 773 No stop 17 26 00 --- 04 25 58 42.8 417.6 -4.8 -67.0 174 819 17 23 01 17 26 30 J0905+4850 04 26 29 43.4 418.6 -4.7 -67.3 24 819 17 26 30 17 28 30 =0902+490 04 28 29 43.7 418.7 -4.6 -67.6 120 850 17 26 31 17 28 30 SDSSJ0910+49 04 28 29 43.1 417.8 -4.7 -67.3 -6 850 No stop 17 31 30 --- 04 31 29 43.6 418.1 -4.7 -67.7 174 897 17 28 31 17 31 30 J0905+4850 04 31 29 44.1 419.0 -4.6 -68.0 -6 897 No stop 17 33 30 =0902+490 04 33 30 44.5 419.2 -4.6 -68.2 114 927 17 31 31 17 33 30 SDSSJ0910+49 04 33 30 43.9 418.3 -4.6 -68.0 -6 927 No stop 17 36 30 --- 04 36 30 44.4 418.5 -4.6 -68.4 174 974 17 33 31 17 37 00 J0905+4850 04 37 00 45.0 419.5 -4.5 -68.7 24 974 17 37 00 17 39 00 =0902+490 04 39 01 45.3 419.6 -4.5 -68.9 120 1005 17 37 01 17 39 00 SDSSJ0910+49 04 39 01 44.7 418.7 -4.5 -68.7 -6 1005 No stop 17 42 00 --- 04 42 01 45.2 419.0 -4.5 -69.1 174 1051 17 39 01 17 42 00 J0905+4850 04 42 01 45.8 419.9 -4.4 -69.3 -6 1051 No stop 17 44 00 =0902+490 04 44 01 46.1 420.1 -4.4 -69.6 114 1082 17 42 01 17 44 00 SDSSJ0910+49 04 44 01 45.5 419.1 -4.5 -69.4 -6 1082 No stop 17 47 00 --- 04 47 02 46.0 419.4 -4.4 -69.8 174 1128 17 44 01 17 47 30 J0905+4850 04 47 32 46.6 420.3 -4.3 -70.0 24 1128 17 47 30 17 49 30 =0902+490 04 49 32 46.9 420.5 -4.3 -70.3 120 1159 17 47 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 ---------------------------------------------------------------------------------------- --- Thu 23 Feb 2023 Day 54 --- 17 49 30 SDSSJ0910+49 04 49 32 46.4 419.6 -4.4 -70.1 -6 1159 No stop 17 52 30 --- 04 52 33 46.8 419.8 -4.3 -70.5 174 1206 17 49 31 17 52 30 J0905+4850 04 52 33 47.4 420.7 -4.2 -70.7 -6 1206 No stop 17 54 30 =0902+490 04 54 33 47.7 420.9 -4.2 -70.9 114 1237 17 52 31 17 54 30 SDSSJ0910+49 04 54 33 47.1 420.0 -4.3 -70.7 -6 1237 No stop 17 57 30 --- 04 57 34 47.6 420.2 -4.2 -71.1 174 1283 17 54 31 17 58 00 J0905+4850 04 58 04 48.2 421.2 -4.2 -71.4 24 1283 17 58 00 18 00 00 =0902+490 05 00 04 48.6 421.3 -4.1 -71.6 120 1314 17 58 01 18 00 00 SDSSJ0910+49 05 00 04 48.0 420.4 -4.2 -71.5 -6 1314 No stop 18 03 00 --- 05 03 05 48.4 420.7 -4.1 -71.9 174 1360 18 00 01 18 03 00 J0905+4850 05 03 05 49.0 421.6 -4.1 -72.0 -6 1360 No stop 18 05 00 =0902+490 05 05 05 49.3 421.7 -4.0 -72.3 114 1391 18 03 01 18 05 00 SDSSJ0910+49 05 05 05 48.8 420.8 -4.1 -72.1 -6 1391 No stop 18 08 00 --- 05 08 05 49.2 421.0 -4.1 -72.5 174 1438 18 05 01 18 08 30 J0905+4850 05 08 35 49.9 422.0 -4.0 -72.7 24 1438 18 08 30 18 10 30 =0902+490 05 10 36 50.2 422.2 -3.9 -73.0 120 1469 18 08 31 18 10 30 SDSSJ0910+49 05 10 36 49.6 421.2 -4.0 -72.9 -6 1469 No stop 18 13 30 --- 05 13 36 50.1 421.4 -4.0 -73.3 174 1515 18 10 31 18 13 30 J0905+4850 05 13 36 50.7 422.4 -3.9 -73.4 -6 1515 No stop 18 15 30 =0902+490 05 15 37 51.0 422.5 -3.9 -73.7 114 1546 18 13 31 18 15 30 SDSSJ0910+49 05 15 37 50.4 421.6 -3.9 -73.5 -6 1546 No stop 18 18 30 --- 05 18 37 50.9 421.8 -3.9 -73.9 174 1592 18 15 31 18 19 00 J0905+4850 05 19 07 51.6 422.8 -3.8 -74.1 24 1592 18 19 00 18 21 00 =0902+490 05 21 07 51.9 422.9 -3.8 -74.4 120 1623 18 19 01 18 21 00 SDSSJ0910+49 05 21 07 51.3 422.0 -3.8 -74.3 -6 1623 No stop 18 24 00 --- 05 24 08 51.7 422.2 -3.8 -74.7 174 1669 18 21 01 18 24 00 J0905+4850 05 24 08 52.4 423.1 -3.7 -74.8 -6 1669 No stop 18 26 00 =0902+490 05 26 08 52.7 423.3 -3.7 -75.0 114 1700 18 24 01 18 27 00 J0927+3902 05 27 08 45.6 435.2 -4.0 -62.4 40 1700 18 27 00 18 32 00 =4C39.25 05 32 09 46.5 435.9 -3.9 -62.7 300 1778 18 27 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 ---------------------------------------------------------------------------------------- --- Thu 23 Feb 2023 Day 54 --- 18 33 00 J0905+4850 05 33 09 53.8 423.8 -3.6 -76.0 40 1778 18 33 00 18 38 00 =0902+490 05 38 10 54.6 424.1 -3.5 -76.6 300 1855 18 33 01 18 38 00 SDSSJ0910+49 05 38 10 54.0 423.1 -3.6 -76.6 -6 1855 No stop 18 41 00 --- 05 41 11 54.4 423.3 -3.5 -77.0 174 1901 18 38 01 18 41 30 J0905+4850 05 41 41 55.2 424.3 -3.4 -77.1 24 1901 18 41 30 18 43 30 =0902+490 05 43 41 55.5 424.5 -3.4 -77.4 120 1932 18 41 31 18 43 30 SDSSJ0910+49 05 43 41 54.8 423.5 -3.5 -77.3 -6 1932 No stop 18 46 30 --- 05 46 42 55.3 423.7 -3.4 -77.7 174 1979 18 43 31 18 46 30 J0905+4850 05 46 42 56.0 424.7 -3.3 -77.8 -6 1979 No stop 18 48 30 =0902+490 05 48 42 56.3 424.8 -3.3 -78.1 114 2010 18 46 31 18 48 30 SDSSJ0910+49 05 48 42 55.6 423.8 -3.4 -78.0 -6 2010 No stop 18 51 30 --- 05 51 42 56.1 424.0 -3.3 -78.4 174 2056 18 48 31 18 52 00 J0905+4850 05 52 13 56.9 425.0 -3.2 -78.5 24 2056 18 52 00 18 54 00 =0902+490 05 54 13 57.2 425.1 -3.2 -78.8 120 2087 18 52 01 18 54 00 SDSSJ0910+49 05 54 13 56.5 424.1 -3.3 -78.8 -6 2087 No stop 18 57 00 --- 05 57 13 57.0 424.3 -3.2 -79.2 174 2133 18 54 01 18 57 00 J0905+4850 05 57 13 57.7 425.3 -3.2 -79.2 -6 2133 No stop 18 59 00 =0902+490 05 59 14 58.0 425.4 -3.1 -79.5 114 2164 18 57 01 18 59 00 SDSSJ0910+49 05 59 14 57.3 424.4 -3.2 -79.5 -6 2164 No stop 19 02 00 --- 06 02 14 57.8 424.6 -3.2 -79.9 174 2211 18 59 01 19 02 30 J0905+4850 06 02 44 58.6 425.6 -3.1 -80.0 24 2211 19 02 30 19 04 30 =0902+490 06 04 45 58.9 425.7 -3.0 -80.3 120 2241 19 02 31 19 04 30 SDSSJ0910+49 06 04 45 58.2 424.7 -3.1 -80.3 -6 2241 No stop 19 07 30 --- 06 07 45 58.7 424.9 -3.1 -80.7 174 2288 19 04 31 19 07 30 J0905+4850 06 07 45 59.4 425.9 -3.0 -80.7 -6 2288 No stop 19 09 30 =0902+490 06 09 45 59.7 426.0 -3.0 -81.0 114 2319 19 07 31 19 09 30 SDSSJ0910+49 06 09 45 59.0 425.0 -3.0 -81.0 -6 2319 No stop 19 12 30 --- 06 12 46 59.5 425.1 -3.0 -81.5 174 2365 19 09 31 19 13 00 J0905+4850 06 13 16 60.3 426.1 -2.9 -81.5 24 2365 19 13 00 19 15 00 =0902+490 06 15 16 60.6 426.2 -2.9 -81.8 120 2396 19 13 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 ---------------------------------------------------------------------------------------- --- Thu 23 Feb 2023 Day 54 --- 19 15 00 SDSSJ0910+49 06 15 16 59.9 425.2 -2.9 -81.8 -6 2396 No stop 19 18 00 --- 06 18 17 60.4 425.4 -2.9 -82.3 174 2442 19 15 01 19 18 00 J0905+4850 06 18 17 61.1 426.4 -2.8 -82.3 -6 2442 No stop 19 20 00 =0902+490 06 20 17 61.4 426.5 -2.8 -82.6 114 2473 19 18 01 19 20 00 SDSSJ0910+49 06 20 17 60.7 425.4 -2.9 -82.6 -6 2473 No stop 19 23 00 --- 06 23 18 61.2 425.6 -2.8 -83.0 174 2520 19 20 01 19 23 30 J0905+4850 06 23 48 62.0 426.6 -2.7 -83.1 24 2520 19 23 30 19 25 30 =0902+490 06 25 48 62.3 426.7 -2.7 -83.4 120 2551 19 23 31 19 25 30 SDSSJ0910+49 06 25 48 61.6 425.7 -2.8 -83.4 -6 2551 No stop 19 28 30 --- 06 28 49 62.1 425.8 -2.7 -83.9 174 2597 19 25 31 19 28 30 J0905+4850 06 28 49 62.8 426.8 -2.6 -83.8 -6 2597 No stop 19 30 30 =0902+490 06 30 49 63.1 426.9 -2.6 -84.2 114 2628 19 28 31 19 30 30 SDSSJ0910+49 06 30 49 62.4 425.9 -2.7 -84.2 -6 2628 No stop 19 33 30 --- 06 33 49 62.9 426.0 -2.6 -84.7 174 2674 19 30 31 19 34 00 J0905+4850 06 34 19 63.7 427.0 -2.5 -84.7 24 2674 19 34 00 19 36 00 =0902+490 06 36 20 64.1 427.1 -2.5 -85.0 120 2705 19 34 01 19 36 00 SDSSJ0910+49 06 36 20 63.3 426.0 -2.6 -85.1 -6 2705 No stop 19 39 00 --- 06 39 20 63.8 426.1 -2.5 -85.6 174 2752 19 36 01 19 39 00 J0905+4850 06 39 20 64.5 427.2 -2.5 -85.5 -6 2752 No stop 19 41 00 =0902+490 06 41 21 64.9 427.2 -2.4 -85.8 114 2782 19 39 01 19 41 00 SDSSJ0910+49 06 41 21 64.2 426.2 -2.5 -85.9 -6 2782 No stop 19 44 00 --- 06 44 21 64.6 426.3 -2.5 -86.4 174 2829 19 41 01 19 44 30 J0905+4850 06 44 51 65.5 427.3 -2.4 -86.4 24 2829 19 44 30 19 46 30 =0902+490 06 46 52 65.8 427.4 -2.3 -86.7 120 2860 19 44 31 19 46 30 SDSSJ0910+49 06 46 52 65.1 426.3 -2.4 -86.8 -6 2860 No stop 19 49 30 --- 06 49 52 65.5 426.4 -2.4 -87.3 174 2906 19 46 31 19 49 30 J0905+4850 06 49 52 66.3 427.5 -2.3 -87.2 -6 2906 No stop 19 51 30 =0902+490 06 51 52 66.6 427.5 -2.3 -87.6 114 2937 19 49 31 19 51 30 SDSSJ0910+49 06 51 52 65.9 426.4 -2.3 -87.7 -6 2937 No stop 19 54 30 --- 06 54 53 66.4 426.5 -2.3 -88.2 174 2983 19 51 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 ---------------------------------------------------------------------------------------- --- Thu 23 Feb 2023 Day 54 --- 19 55 00 J0905+4850 06 55 23 67.2 427.5 -2.2 -88.2 24 2983 19 55 00 19 57 00 =0902+490 06 57 23 67.5 427.6 -2.2 -88.5 120 3014 19 55 01 19 57 00 SDSSJ0910+49 06 57 23 66.8 426.5 -2.2 -88.7 -6 3014 No stop 20 00 00 --- 07 00 24 67.3 426.5 -2.2 -89.2 174 3061 19 57 01 20 00 00 J0905+4850 07 00 24 68.0 427.6 -2.1 -89.1 -6 3061 No stop 20 02 00 =0902+490 07 02 24 68.3 427.6 -2.1 -89.5 114 3092 20 00 01 20 02 00 SDSSJ0910+49 07 02 24 67.6 426.5 -2.2 -89.6 -6 3092 No stop 20 05 00 --- 07 05 25 68.1 426.5 -2.1 -90.2 174 3138 20 02 01 20 05 30 J0905+4850 07 05 55 68.9 427.6 -2.0 -90.1 24 3138 20 05 30 20 07 30 =0902+490 07 07 55 69.3 427.6 -2.0 -90.5 120 3169 20 05 31 20 07 30 SDSSJ0910+49 07 07 55 68.5 426.5 -2.1 -90.6 -6 3169 No stop 20 10 30 --- 07 10 55 69.0 426.5 -2.0 -91.2 174 3215 20 07 31 20 10 30 J0905+4850 07 10 55 69.7 427.6 -1.9 -91.1 -6 3215 No stop 20 12 30 =0902+490 07 12 56 70.1 427.6 -1.9 -91.5 114 3246 20 10 31 20 12 30 SDSSJ0910+49 07 12 56 69.3 426.5 -2.0 -91.6 -6 3246 No stop 20 15 30 --- 07 15 56 69.8 426.4 -1.9 -92.2 174 3293 20 12 31 20 16 00 J0905+4850 07 16 26 70.7 427.5 -1.8 -92.2 24 3293 20 16 00 20 18 00 =0902+490 07 18 27 71.0 427.5 -1.8 -92.6 120 3324 20 16 01 20 18 00 SDSSJ0910+49 07 18 27 70.2 426.4 -1.9 -92.8 -6 3324 No stop 20 21 00 --- 07 21 27 70.7 426.3 -1.8 -93.4 174 3370 20 18 01 20 21 00 J0905+4850 07 21 27 71.5 427.4 -1.8 -93.2 -6 3370 No stop 20 23 00 =0902+490 07 23 28 71.8 427.3 -1.7 -93.7 114 3401 20 21 01 20 24 00 J0927+3902 07 24 28 66.3 452.8 -2.1 -66.3 22 3401 20 24 00 20 30 00 =4C39.25 07 30 29 67.4 454.0 -2.0 -66.1 360 3494 20 24 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess123.C2048 --- 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: 6 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= 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 4600.00 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 = 1 9 1 9 2 10 2 10 3 11 3 11 4 12 4 12 BBC SB= L L U U L L U U L L U U L L U U IF = A1 C1 A1 C1 A1 C1 A1 C1 A1 C1 A1 C1 A1 C1 A1 C1 The following frequency sets based on these setups were used. Frequency Set: 3 Setup file default. Used with PCAL = off LO sum= 4830.49 4830.49 4830.49 4830.49 4894.49 4894.49 4894.49 4894.49 4958.49 4958.49 4958.49 4958.49 5022.49 5022.49 5022.49 5022.49 BBC fr= 230.49 230.49 230.49 230.49 294.49 294.49 294.49 294.49 358.49 358.49 358.49 358.49 422.49 422.49 422.49 422.49 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 39.478693 0.00 49 27 13.94852 * 49 15 00.25000 49 09 23.76236 0.00 From catalog imbedded in main SCHED input file. 0902+490 09 02 00.374037 * 09 05 27.463885 09 07 04.490285 0.15 * J0905+4850 49 02 49.85961 * 48 50 49.96508 48 45 20.07373 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 30.898990 0.31 * J0927+3902 39 15 23.56644 * 39 02 20.85185 38 56 19.59308 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.C2048 1 2 3 4 5 6 7 8 9 2.000 64.635 J0905+4850 sess123.C2048 1 2 3 4 5 6 7 8 9 1.500 45.476 J0927+3902 sess123.C2048 1 2 3 4 5 6 7 8 9 0.267 8.878 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+49 137.6 J0905+4850 137.5 J0927+3902 148.0 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