COVER INFORMATION Station: GBT_VLBA (Code Gb ) Experiment: RadioAstron polarization imaging Exp. Code: GG085G Schedule Version: 5.00 Processed by SCHED version: 11.50 Development version 11.5. Started Apr. 2 PI: Jose L. Gomez Address: Instituto de Astrofisica de Andalucia-CSIC Glorieta de la Astronomia E-18008 Granada, Spain Phone: +79165452842 EMAIL: jlgomez@iaa.es Fax: Phone during observation: Observing mode: K-band dual-pol Notes: K-band, Radioastron-compatible frequency setup P-CAL is ON Tsys is ON auto-level (AGC) is ON Schedule for GBT_VLBA (Code Gb ) Page 2 RadioAstron polarization imaging 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 ---------------------------------------------------------------------------------------- --- Wed 8 May 2019 Day 128 --- ---------- This is an 9-min pointing & focus scan for GBT ---------- Next scan frequencies: 22156.00 22156.00 22188.00 22188.00 22220.00 22220.00 22252.00 22252.00 Next BBC frequencies: 880.00 880.00 848.00 848.00 816.00 816.00 784.00 784.00 Next scan bandwidths: 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 10 00 00 1749+096 19 44 26 51.8 228.5 1.9 36.5 0 0 Stopped 10 09 00 --- 19 53 28 50.5 231.3 2.0 38.3 540 0 10 09 30 1749+096 19 53 58 50.4 231.4 2.0 38.4 9 0 10 09 30 10 17 00 --- 20 01 29 49.2 233.7 2.2 39.8 450 58 10 09 31 10 17 30 1641+399 20 01 59 52.0 288.1 3.3 75.6 -93 58 10 19 03 10 25 30 --- 20 10 00 50.5 288.7 3.4 74.8 387 108 10 17 31 10 26 00 1641+399 20 10 30 50.4 288.8 3.4 74.8 9 108 10 26 00 10 34 00 --- 20 18 32 48.9 289.4 3.6 74.0 480 170 10 26 01 10 35 00 1641+399 20 19 32 48.7 289.5 3.6 73.9 39 170 10 35 00 10 44 00 --- 20 28 33 47.1 290.2 3.7 73.0 540 239 10 35 01 10 44 30 1641+399 20 29 03 47.0 290.3 3.8 72.9 9 239 10 44 30 10 54 30 --- 20 39 05 45.2 291.1 3.9 71.9 600 317 10 44 31 10 55 15 1641+399 20 39 50 45.0 291.2 3.9 71.9 24 317 10 55 15 11 02 00 --- 20 46 36 43.8 291.8 4.0 71.2 405 369 10 55 16 11 02 30 1641+399 20 47 06 43.7 291.8 4.1 71.1 9 369 11 02 30 11 05 15 --- 20 49 52 43.2 292.0 4.1 70.9 165 390 11 02 31 ---------- This is an 9-min pointing & focus scan for GBT ---------- 11 42 30 1641+399 21 27 13 36.5 295.4 4.7 67.0 2212 390 Stopped 11 51 30 --- 21 36 14 34.9 296.2 4.9 66.1 540 390 11 52 00 1641+399 21 36 44 34.8 296.3 4.9 66.0 9 390 11 52 00 12 00 00 --- 21 44 46 33.4 297.1 5.0 65.2 480 452 11 52 01 12 00 30 1641+399 21 45 16 33.3 297.1 5.0 65.1 9 452 12 00 30 12 10 45 --- 21 55 33 31.5 298.1 5.2 64.0 615 531 12 00 31 12 11 30 1641+399 21 56 18 31.4 298.2 5.2 63.9 24 531 12 11 30 12 18 15 --- 22 03 04 30.2 298.9 5.3 63.2 405 583 12 11 31 12 18 45 1641+399 22 03 34 30.2 298.9 5.3 63.1 9 583 12 18 45 12 29 00 --- 22 13 51 28.4 300.0 5.5 62.0 615 662 12 18 46 Schedule for GBT_VLBA (Code Gb ) Page 3 RadioAstron polarization imaging 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 ---------------------------------------------------------------------------------------- --- Wed 8 May 2019 Day 128 --- 12 29 30 1641+399 22 14 21 28.3 300.0 5.5 62.0 9 662 12 29 30 12 39 45 --- 22 24 37 26.6 301.1 5.7 60.8 615 742 12 29 31 12 40 15 1641+399 22 25 07 26.5 301.1 5.7 60.7 9 742 12 40 15 12 50 30 --- 22 35 24 24.8 302.2 5.9 59.6 615 821 12 40 16 12 51 00 1641+399 22 35 54 24.7 302.3 5.9 59.5 9 821 12 51 00 13 01 15 --- 22 46 11 23.0 303.4 6.0 58.3 615 900 12 51 01 ---------- This is an 9-min pointing & focus scan for GBT ---------- 13 01 45 1641+399 22 46 41 22.9 303.4 6.1 58.3 9 900 Stopped 13 10 45 --- 22 55 42 21.5 304.4 6.2 57.2 540 900 13 11 15 1641+399 22 56 12 21.4 304.5 6.2 57.1 9 900 13 11 15 13 21 30 --- 23 06 29 19.7 305.7 6.4 55.9 615 979 13 11 16 13 22 00 1641+399 23 06 59 19.7 305.7 6.4 55.8 9 979 13 22 00 13 32 15 --- 23 17 16 18.0 306.9 6.6 54.6 615 1059 13 22 01 13 32 45 1641+399 23 17 46 18.0 307.0 6.6 54.5 9 1059 13 32 45 13 43 00 --- 23 28 03 16.4 308.2 6.7 53.2 615 1138 13 32 46 13 43 45 1641+399 23 28 48 16.3 308.3 6.8 53.1 24 1138 13 43 45 13 53 45 --- 23 38 49 14.7 309.5 6.9 51.9 600 1215 13 43 46 13 54 15 1641+399 23 39 20 14.6 309.6 6.9 51.8 9 1215 13 54 15 14 04 15 --- 23 49 21 13.1 310.8 7.1 50.5 600 1292 13 54 16 14 05 00 1641+399 23 50 06 13.0 310.9 7.1 50.4 24 1292 14 05 00 14 08 00 --- 23 53 07 12.6 311.3 7.2 50.0 180 1316 14 05 01 14 08 30 1641+399 23 53 37 12.5 311.3 7.2 49.9 9 1316 14 08 30 14 18 30 --- 00 03 39 11.1 312.6 7.3 48.6 600 1393 14 08 31 14 19 00 1641+399 00 04 09 11.0 312.7 7.3 48.5 9 1393 14 19 00 14 29 00 --- 00 14 10 9.6 314.0 7.5 47.2 600 1470 14 19 01 ---------- This is an 9-min pointing & focus scan for GBT ---------- 15 07 00 2251+158 00 52 16 56.0 237.4 2.0 43.4 2081 1470 Stopped 15 16 00 --- 01 01 18 54.5 240.1 2.1 45.0 540 1470 15 16 30 2251+158 01 01 48 54.4 240.3 2.1 45.1 9 1470 15 16 30 15 24 30 --- 01 09 49 53.1 242.5 2.2 46.4 480 1532 15 16 31 Schedule for GBT_VLBA (Code Gb ) Page 4 RadioAstron polarization imaging 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 9 May 2019 Day 129 --- ---------- This is an 9-min pointing & focus scan for GBT ---------- 00 34 00 1641+399 10 20 50 19.7 414.3 -6.4 -55.9 32787 1532 Stopped 00 43 00 --- 10 29 51 21.2 415.4 -6.2 -57.0 540 1532 00 44 21 1641+399 10 31 12 21.4 415.5 -6.2 -57.2 60 1532 00 44 21 00 54 21 --- 10 41 14 23.0 416.6 -6.0 -58.3 600 1609 00 44 22 00 55 21 1641+399 10 42 14 23.2 416.7 -6.0 -58.5 39 1609 00 55 21 01 04 21 --- 10 51 16 24.7 417.7 -5.9 -59.5 540 1679 00 55 22 01 05 00 1641+399 10 51 55 24.8 417.8 -5.9 -59.6 18 1679 01 05 00 01 15 00 --- 11 01 56 26.5 418.9 -5.7 -60.7 600 1756 01 05 01 01 15 30 1641+399 11 02 26 26.6 418.9 -5.7 -60.8 9 1756 01 15 30 01 25 30 --- 11 12 28 28.2 419.9 -5.5 -61.9 600 1833 01 15 31 01 26 00 1641+399 11 12 58 28.3 420.0 -5.5 -62.0 9 1833 01 26 00 01 36 00 --- 11 23 00 30.0 421.0 -5.3 -63.1 600 1911 01 26 01 01 36 30 1641+399 11 23 30 30.1 421.1 -5.3 -63.1 9 1911 01 36 30 01 39 30 --- 11 26 30 30.6 421.4 -5.3 -63.5 180 1934 01 36 31 01 40 00 1641+399 11 27 00 30.7 421.4 -5.3 -63.5 9 1934 01 40 00 01 50 00 --- 11 37 02 32.5 422.4 -5.1 -64.6 600 2011 01 40 01 01 50 30 1641+399 11 37 32 32.5 422.5 -5.1 -64.6 9 2011 01 50 30 02 00 30 --- 11 47 34 34.3 423.4 -4.9 -65.7 600 2088 01 50 31 02 01 00 1641+399 11 48 04 34.4 423.5 -4.9 -65.8 9 2088 02 01 00 02 07 00 --- 11 54 05 35.4 424.0 -4.8 -66.4 360 2135 02 01 01 02 07 30 1641+399 11 54 35 35.5 424.1 -4.8 -66.5 9 2135 02 07 30 02 17 30 --- 12 04 37 37.3 425.0 -4.7 -67.5 600 2212 02 07 31 02 18 00 1641+399 12 05 07 37.4 425.1 -4.6 -67.6 9 2212 02 18 00 02 28 00 --- 12 15 08 39.2 426.0 -4.5 -68.6 600 2289 02 18 01 ---------- This is an 9-min pointing & focus scan for GBT ---------- 02 28 30 1641+399 12 15 38 39.3 426.0 -4.5 -68.6 9 2289 Stopped 02 38 30 --- 12 25 40 41.1 426.9 -4.3 -69.7 600 2289 02 39 00 1641+399 12 26 10 41.2 427.0 -4.3 -69.7 9 2289 02 39 00 02 49 00 --- 12 36 12 43.0 427.9 -4.1 -70.7 600 2367 02 39 01 Schedule for GBT_VLBA (Code Gb ) Page 5 RadioAstron polarization imaging 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 9 May 2019 Day 129 --- 02 49 30 1641+399 12 36 42 43.1 427.9 -4.1 -70.8 9 2367 02 49 30 02 59 30 --- 12 46 44 44.9 428.8 -3.9 -71.8 600 2444 02 49 31 03 00 00 1641+399 12 47 14 45.0 428.8 -3.9 -71.8 9 2444 03 00 00 03 10 00 --- 12 57 15 46.8 429.6 -3.8 -72.8 600 2521 03 00 01 03 11 00 1641+399 12 58 15 47.0 429.7 -3.8 -72.9 39 2521 03 11 00 03 21 00 --- 13 08 17 48.8 430.5 -3.6 -73.9 600 2599 03 11 01 03 22 00 1641+399 13 09 17 49.0 430.6 -3.6 -74.0 39 2599 03 22 00 03 31 00 --- 13 18 19 50.7 431.3 -3.4 -74.9 540 2668 03 22 01 03 35 00 1641+399 13 22 19 51.4 431.7 -3.4 -75.3 219 2668 03 35 00 03 45 00 --- 13 32 21 53.3 432.4 -3.2 -76.3 600 2745 03 35 01 03 45 30 1641+399 13 32 51 53.4 432.5 -3.2 -76.4 9 2745 03 45 30 03 55 30 --- 13 42 53 55.3 433.2 -3.0 -77.4 600 2823 03 45 31 03 56 00 1641+399 13 43 23 55.4 433.3 -3.0 -77.4 9 2823 03 56 00 04 06 00 --- 13 53 24 57.3 434.0 -2.8 -78.4 600 2900 03 56 01 04 06 30 1641+399 13 53 55 57.4 434.0 -2.8 -78.5 9 2900 04 06 30 04 16 30 --- 14 03 56 59.2 434.7 -2.7 -79.5 600 2977 04 06 31 04 17 00 1641+399 14 04 26 59.3 434.8 -2.7 -79.5 9 2977 04 17 00 04 27 00 --- 14 14 28 61.2 435.4 -2.5 -80.5 600 3055 04 17 01 ---------- This is an 9-min pointing & focus scan for GBT ---------- 04 27 30 1641+399 14 14 58 61.3 435.5 -2.5 -80.6 9 3055 Stopped 04 37 30 --- 14 25 00 63.2 436.1 -2.3 -81.6 600 3055 04 38 00 1641+399 14 25 30 63.3 436.1 -2.3 -81.7 9 3055 04 38 00 04 45 30 --- 14 33 01 64.8 436.6 -2.2 -82.5 450 3113 04 38 01 04 46 00 1641+399 14 33 31 64.9 436.6 -2.2 -82.5 9 3113 04 46 00 04 53 30 --- 14 41 02 66.3 437.0 -2.0 -83.3 450 3170 04 46 01 04 54 00 1641+399 14 41 32 66.4 437.1 -2.0 -83.4 9 3170 04 54 00 05 01 30 --- 14 49 04 67.8 437.5 -1.9 -84.2 450 3228 04 54 01 05 02 00 1749+096 14 49 34 40.0 112.8 -3.0 W -47.1 -540 3228 05 11 00 05 06 00 --- 14 53 34 40.8 113.7 -3.0 W -46.7 0 3190 05 02 01 Schedule for GBT_VLBA (Code Gb ) Page 6 RadioAstron polarization imaging 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 9 May 2019 Day 129 --- 05 07 00 1749+096 14 54 34 40.9 113.9 -3.0 -46.6 39 3190 05 07 00 05 17 00 --- 15 04 36 42.7 116.2 -2.8 -45.5 600 3267 05 07 01 05 18 00 1749+096 15 05 36 42.9 116.4 -2.8 -45.4 39 3267 05 18 00 05 25 00 --- 15 12 37 44.1 118.1 -2.7 -44.5 420 3321 05 18 01 05 26 00 1749+096 15 13 38 44.3 118.4 -2.6 -44.4 39 3321 05 26 00 05 34 30 --- 15 22 09 45.7 120.5 -2.5 -43.2 510 3387 05 26 01 05 35 00 1641+399 15 22 39 74.3 78.7 -1.3 -88.4 -92 3387 05 36 32 05 38 00 --- 15 25 40 74.8 78.8 -1.3 -88.8 88 3398 05 35 01 05 38 30 1641+399 15 26 10 74.9 78.8 -1.3 -88.9 9 3398 05 38 30 05 44 30 --- 15 32 11 76.1 78.9 -1.2 -89.8 360 3445 05 38 31 05 45 00 1641+399 15 32 41 76.2 78.9 -1.2 -89.9 9 3445 05 45 00 05 51 00 --- 15 38 42 77.3 78.8 -1.1 -90.9 360 3491 05 45 01 ---------- This is an 9-min pointing & focus scan for GBT ---------- 05 51 30 1641+399 15 39 12 77.4 78.8 -1.1 -91.0 9 3491 Stopped 06 01 30 --- 15 49 13 79.4 78.5 -0.9 -92.9 600 3491 06 02 00 1641+399 15 49 44 79.5 78.5 -0.9 -93.0 9 3491 06 02 00 06 12 00 --- 15 59 45 81.4 77.6 -0.7 -95.5 600 3568 06 02 01 06 12 30 1641+399 16 00 15 81.5 77.5 -0.7 -95.6 9 3568 06 12 30 06 22 30 --- 16 10 17 83.4 75.7 -0.6 -99.0 600 3646 06 12 31 06 23 30 1641+399 16 11 17 83.6 75.4 -0.5 -99.5 39 3646 06 23 30 06 33 30 --- 16 21 19 85.5 71.1 -0.4 -105.4 600 3723 06 23 31 06 34 30 1641+399 16 22 19 85.7 70.4 -0.4 -106.3 37 3723 06 34 30 06 43 30 --- 16 31 20 87.3 59.7 -0.2 -118.3 540 3792 06 34 31 06 44 00 1641+399 16 31 50 87.3 58.7 -0.2 -119.4 5 3792 06 44 00 06 54 00 --- 16 41 52 88.6 14.3 -0.0 D -165.4 0 3870 06 44 01 06 54 30 1641+399 16 42 22 88.6 10.4 -0.0 D -169.4 -4 3870 06 54 34 07 04 30 --- 16 52 24 87.8 -51.0 0.1 127.6 0 3947 06 54 31 07 05 00 1641+399 16 52 54 87.8 -52.5 0.2 126.0 3 3947 07 05 00 07 15 00 --- 17 02 56 86.0 -68.8 0.3 108.2 600 4024 07 05 01 Schedule for GBT_VLBA (Code Gb ) Page 7 RadioAstron polarization imaging 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 9 May 2019 Day 129 --- 07 15 30 1641+399 17 03 26 85.9 -69.2 0.3 107.7 7 4024 07 15 30 07 20 10 --- 17 08 06 85.1 -72.3 0.4 103.8 280 4060 07 15 31 07 20 40 1641+399 17 08 36 85.0 -72.6 0.4 103.5 8 4060 07 20 40 07 30 40 --- 17 18 38 83.1 -76.1 0.6 98.4 600 4137 07 20 41 07 31 10 1641+399 17 19 08 83.0 -76.2 0.6 98.2 9 4137 07 31 10 07 41 10 --- 17 29 10 81.1 -77.8 0.8 95.0 600 4214 07 31 11 07 41 40 1641+399 17 29 40 81.0 -77.9 0.8 94.9 9 4214 07 41 40 07 51 40 --- 17 39 42 79.1 -78.6 0.9 92.6 600 4292 07 41 41 07 52 10 1641+399 17 40 12 79.0 -78.6 0.9 92.5 9 4292 07 52 10 08 00 00 --- 17 48 03 77.5 -78.8 1.1 91.0 470 4352 07 52 11 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: ra1cm2.set Matching groups in /home/guest/rmc/SCHED/sched11.5/catalogs/freq_RDBE.dat: gbt1cm_a4 LO1=28.868, LO2=16.532, LO3=10.5 Setup group: 1 Station: GBT_VLBA Total bit rate: 1024 Format: VDIF Bits per sample: 2 Sample rate: 64.000 Number of channels: 8 DBE type: RDBE_DDC Speedup factor: 1.00 Disk used to record data. 1st LO= 23036.00 23036.00 23036.00 23036.00 23036.00 23036.00 23036.00 23036.00 Net SB= U U U U U U U U IF SB = L L L L L L L L Pol. = RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 2 3 4 5 6 7 8 BBC SB= L L L L L L L L IF = B D B D B D B D The following frequency sets based on these setups were used. Frequency Set: 5 Setup file default. Used with PCAL = 1MHz LO sum= 22156.00 22156.00 22188.00 22188.00 22220.00 22220.00 22252.00 22252.00 BBC fr= 880.00 880.00 848.00 848.00 816.00 816.00 784.00 784.00 Bandwd= 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 VLBA legacy crd files using 4 channels based on RDBE channels: 3 4 5 6 CRD fr= 840.01 840.01 808.01 808.01 CRD bw= 16.00 16.00 16.00 16.00 Matching frequency sets: 5 Track assignments are: track1= 1, 2, 3, 4, 5, 6, 7, 8 barrel=roll_off POSITIONS OF SOURCES USED IN RECORDING SCANS Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) 1328+307 13 28 49.657783 * 13 31 08.288075 13 32 02.136734 0.18 J1331+3030 30 45 58.64055 * 30 30 32.95919 30 24 43.07322 0.17 * 3C286 From catalog imbedded in main SCHED input file. rfc_2018a Petrov and Kovalev, in preparation 603 observations * 0355+508 03 55 45.261377 * 03 59 29.747278 04 00 53.430855 0.16 J0359+5057 50 49 20.28597 * 50 57 50.16192 51 00 56.76709 0.10 NRAO150 /home/guest/rmc/SCHED/sched11.5/catalogs/sources.rfc rfc_2018a Petrov and Kovalev, in preparation 27427 observations * 1641+399 16 41 17.606226 * 16 42 58.809963 16 43 38.773734 0.13 J1642+3948 39 54 10.81487 * 39 48 36.99393 39 46 26.22766 0.10 /home/guest/rmc/SCHED/sched11.5/catalogs/sources.rfc rfc_2018a Petrov and Kovalev, in preparation 52534 observations * 1749+096 17 49 10.387930 * 17 51 32.818573 17 52 27.954984 0.10 J1751+0939 09 39 42.82586 * 09 39 00.72841 09 38 43.28918 0.10 /home/guest/rmc/SCHED/sched11.5/catalogs/sources.rfc rfc_2018a Petrov and Kovalev, in preparation 217453 observations * 2200+420 22 00 39.362505 * 22 02 43.291372 22 03 30.249781 0.14 J2202+4216 42 02 08.59082 * 42 16 39.97996 42 21 56.96920 0.10 BLLAC /home/guest/rmc/SCHED/sched11.5/catalogs/sources.rfc rfc_2018a Petrov and Kovalev, in preparation 60473 observations * 2251+158 22 51 29.519743 * 22 53 57.747942 22 54 53.589085 0.10 J2253+1608 15 52 54.34805 * 16 08 53.56088 16 14 49.53006 0.10 /home/guest/rmc/SCHED/sched11.5/catalogs/sources.rfc rfc_2018a Petrov and Kovalev, in preparation 41804 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 3C286 ra1cm2.set 1 0.583 0.000 ra2cm2.set 3 0.525 0.000 ra7mm2.set 2 0.658 0.000 0355+508 ra1cm2.set 36 40 6.584 39.501 1641+399 ra1cm2.set 1 5 6 36 39 40 44 46 47 48 + 19.668 2404.375 ra2cm2.set 3 26 58 0.942 43.892 ra7mm2.set 2 16 41 56 57 1.804 85.688 1749+096 ra1cm2.set 1 5 6 36 39 40 44 46 47 49 + 2.262 152.382 ra2cm2.set 3 26 58 0.317 13.945 ra7mm2.set 2 16 41 56 57 0.833 31.011 2200+420 ra1cm2.set 1 0.233 0.000 ra2cm2.set 3 0.233 0.000 ra7mm2.set 2 0.233 0.000 2251+158 ra1cm2.set 1 5 6 36 39 45 46 47 48 49 + 4.528 172.228 ra2cm2.set 3 26 0.100 5.500 ra7mm2.set 2 16 41 0.333 9.667 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) 3C286 127.7 0355+508 35.8 1641+399 118.3 1749+096 130.1 2200+420 67.3 2251+158 58.9 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