COVER INFORMATION Station: GBT_COLD (Code Gb ) Experiment: RadioAstron polarization imaging Exp. Code: gg083d Schedule Version: 1.20 Processed by SCHED version: 11.40 Release 11.4. March 14, 2015 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, alobanov@mpifr-bonn.mpg.de Fax: Phone during observation: +79165452842 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_COLD (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 ---------------------------------------------------------------------------------------- --- Fri 9 Feb 2018 Day 40 --- ---------- 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 03 00 00 0923+392 06 57 17 60.8 77.0 -2.5 -78.9 0 0 Stopped 03 09 00 --- 07 06 19 62.5 77.6 -2.4 -79.7 540 0 03 22 00 0923+392 07 19 21 65.0 78.6 -2.1 -80.9 758 0 03 21 49 03 27 00 --- 07 24 22 66.0 79.0 -2.1 -81.4 300 40 03 21 50 ---------- This is an 8-min pointing & focus scan for GBT ---------- 03 31 00 1226+023 07 28 23 12.6 97.6 -5.0 -51.0 36 40 Stopped 03 39 00 --- 07 36 24 14.2 98.9 -4.9 -50.7 480 40 03 39 00 1226+023 07 36 24 14.2 98.9 -4.9 -50.7 -20 40 03 39 20 03 45 00 --- 07 42 25 15.3 99.9 -4.8 -50.5 340 84 03 39 01 03 46 00 1226+023 07 43 25 15.5 100.1 -4.8 -50.5 39 84 03 45 49 03 54 00 --- 07 51 26 17.1 101.4 -4.6 -50.2 480 147 03 45 50 ---------- K-band VLBI scans. Space segment 03: 1226+023 with EVN+GBT+VLBA ---------- 03 55 00 1226+023 07 52 27 17.3 101.6 -4.6 -50.2 39 147 03 54 49 04 05 00 --- 08 02 28 19.2 103.3 -4.5 -49.7 600 226 03 54 50 04 05 30 1226+023 08 02 58 19.3 103.4 -4.5 -49.7 9 226 04 05 21 04 15 00 --- 08 12 30 21.1 105.0 -4.3 -49.2 570 300 04 05 20 04 15 30 1226+023 08 13 00 21.2 105.1 -4.3 -49.2 9 300 04 15 21 04 25 00 --- 08 22 31 23.0 106.8 -4.1 -48.6 570 375 04 15 20 04 25 30 1226+023 08 23 02 23.1 106.9 -4.1 -48.6 9 375 04 25 21 04 35 00 --- 08 32 33 24.8 108.6 -4.0 -48.0 570 450 04 25 20 04 35 30 1226+023 08 33 03 24.9 108.7 -3.9 -47.9 9 450 04 35 21 04 45 00 --- 08 42 35 26.7 110.5 -3.8 -47.2 570 524 04 35 20 04 45 30 1226+023 08 43 05 26.8 110.6 -3.8 -47.2 9 524 04 45 21 04 55 00 --- 08 52 36 28.5 112.4 -3.6 -46.4 570 599 04 45 20 Schedule for GBT_COLD (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 ---------------------------------------------------------------------------------------- --- Fri 9 Feb 2018 Day 40 --- ---------- This is an 8-min pointing & focus scan for GBT ---------- 04 55 30 1226+023 08 53 06 28.6 112.5 -3.6 -46.4 9 599 Stopped 05 03 30 --- 09 01 08 30.0 114.1 -3.5 -45.7 480 599 05 04 00 1226+023 09 01 38 30.1 114.2 -3.5 -45.6 9 599 05 03 51 05 35 00 --- 09 32 43 35.5 120.9 -3.0 -42.3 1860 840 05 03 50 05 35 30 1226+023 09 33 13 35.6 121.0 -2.9 -42.2 9 840 05 35 21 05 45 30 --- 09 43 15 37.3 123.3 -2.8 -40.9 600 918 05 35 20 05 46 00 1226+023 09 43 45 37.4 123.4 -2.8 -40.8 9 918 05 45 51 05 55 00 --- 09 52 46 38.8 125.6 -2.6 -39.6 540 989 05 45 50 05 55 30 1226+023 09 53 16 38.9 125.8 -2.6 -39.5 9 989 05 55 21 06 04 30 --- 10 02 18 40.3 128.0 -2.5 -38.1 540 1059 05 55 20 06 05 00 1226+023 10 02 48 40.4 128.2 -2.5 -38.0 9 1059 06 04 51 06 10 30 --- 10 08 19 41.2 129.6 -2.4 -37.1 330 1103 06 04 50 06 11 30 1226+023 10 09 19 41.4 129.9 -2.3 -37.0 39 1103 06 11 19 06 21 30 --- 10 19 21 42.9 132.6 -2.2 -35.2 600 1182 06 11 20 06 22 30 1226+023 10 20 21 43.0 132.9 -2.2 -35.0 39 1182 06 22 19 06 29 30 --- 10 27 22 44.0 134.9 -2.0 -33.7 420 1237 06 22 20 ---------- All back to K-band ---------- 06 30 30 1226+023 10 28 22 44.1 135.2 -2.0 -33.5 39 1237 06 30 19 06 40 00 --- 10 37 54 45.4 138.0 -1.9 -31.6 570 1312 06 30 20 06 40 30 1226+023 10 38 24 45.5 138.1 -1.9 -31.5 9 1312 06 40 21 06 49 30 --- 10 47 25 46.6 140.9 -1.7 -29.6 540 1383 06 40 20 06 50 00 1226+023 10 47 55 46.7 141.1 -1.7 -29.5 9 1383 06 49 51 07 00 00 --- 10 57 57 47.9 144.4 -1.5 -27.2 600 1461 06 49 50 ---------- This is an 8-min pointing & focus scan for GBT ---------- 07 00 30 1226+023 10 58 27 47.9 144.5 -1.5 -27.1 9 1461 Stopped 07 08 30 --- 11 06 28 48.8 147.2 -1.4 -25.1 480 1461 Schedule for GBT_COLD (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 ---------------------------------------------------------------------------------------- --- Fri 9 Feb 2018 Day 40 --- ---------- All back to K-band ---------- 07 09 00 1226+023 11 06 58 48.9 147.4 -1.4 -25.0 9 1461 07 08 51 07 16 00 --- 11 14 00 49.6 149.9 -1.3 -23.2 420 1517 07 08 50 07 17 00 1226+023 11 15 00 49.7 150.2 -1.3 -22.9 38 1517 07 16 49 07 26 00 --- 11 24 01 50.5 153.5 -1.1 -20.5 540 1588 07 16 50 07 27 00 1226+023 11 25 01 50.6 153.8 -1.1 -20.2 38 1588 07 26 49 07 34 00 --- 11 32 02 51.2 156.5 -1.0 -18.2 420 1643 07 26 50 ---------- K-band VLBI scans. Space segment 04: 1226+023 with EVN+GBT+VLBA ---------- 07 35 00 1226+023 11 33 03 51.3 156.9 -0.9 -17.9 38 1643 07 34 49 07 45 00 --- 11 43 04 52.0 160.7 -0.8 -15.0 600 1722 07 34 50 07 45 30 1226+023 11 43 34 52.0 160.9 -0.8 -14.8 9 1722 07 45 21 07 55 00 --- 11 53 06 52.6 164.7 -0.6 -11.9 570 1796 07 45 20 07 55 30 1226+023 11 53 36 52.6 164.9 -0.6 -11.8 9 1796 07 55 21 08 05 00 --- 12 03 08 53.0 168.8 -0.4 -8.8 570 1871 07 55 20 08 05 30 1226+023 12 03 38 53.0 169.0 -0.4 -8.6 9 1871 08 05 21 08 15 00 --- 12 13 09 53.3 172.9 -0.3 -5.5 570 1946 08 05 20 08 15 30 1226+023 12 13 39 53.3 173.1 -0.3 -5.4 8 1946 08 15 22 08 25 00 --- 12 23 11 53.5 177.1 -0.1 -2.3 570 2020 08 15 20 08 25 30 1226+023 12 23 41 53.5 177.3 -0.1 -2.1 8 2020 08 25 22 08 35 00 --- 12 33 13 53.5 181.3 0.1 1.0 570 2094 08 25 20 08 35 30 1226+023 12 33 43 53.5 181.5 0.1 1.2 8 2094 08 35 22 09 02 00 --- 13 00 17 52.9 192.6 0.5 9.8 1590 2300 08 35 20 ---------- This is an 8-min pointing & focus scan for GBT ---------- 09 02 30 1226+023 13 00 47 52.8 192.8 0.5 10.0 9 2300 Stopped 09 10 30 --- 13 08 48 52.5 196.0 0.6 12.5 480 2300 09 29 30 1226+023 13 27 51 51.2 203.5 1.0 18.2 1116 2300 09 29 19 09 39 30 --- 13 37 53 50.4 207.2 1.1 21.0 600 2379 09 29 20 09 48 00 0923+392 13 46 25 40.7 292.1 4.3 69.0 186 2379 09 47 49 09 53 30 --- 13 51 55 39.7 292.6 4.4 68.4 330 2423 09 47 50 Schedule for GBT_COLD (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 ---------------------------------------------------------------------------------------- --- Fri 9 Feb 2018 Day 40 --- 09 59 00 1226+023 13 57 26 48.4 214.1 1.5 26.0 26 2423 09 58 49 10 04 00 --- 14 02 27 47.8 215.8 1.5 27.3 300 2463 09 58 50 ---------- rest of antennas on target ---------- 10 05 00 1226+023 14 03 27 47.7 216.1 1.6 27.5 38 2463 10 04 49 10 13 00 --- 14 11 29 46.8 218.7 1.7 29.3 480 2526 10 04 50 10 13 30 1226+023 14 11 59 46.7 218.8 1.7 29.4 9 2526 10 13 21 10 21 30 --- 14 20 00 45.7 221.3 1.8 31.2 480 2589 10 13 20 10 22 00 1226+023 14 20 30 45.6 221.5 1.8 31.3 9 2589 10 21 51 10 30 00 --- 14 28 31 44.6 223.9 2.0 32.9 480 2652 10 21 50 10 30 10 1226+023 14 28 41 44.5 223.9 2.0 33.0 -11 2652 10 30 21 10 35 10 --- 14 33 42 43.9 225.4 2.1 33.9 289 2689 10 30 01 ---------- This is an 8-min pointing & focus scan for GBT ---------- 10 35 30 1226+023 14 34 02 43.8 225.5 2.1 34.0 -1 2689 Stopped 10 43 30 --- 14 42 04 42.7 227.8 2.2 35.5 479 2689 ---------- All back to K-band ---------- 10 54 30 1226+023 14 53 05 41.0 230.7 2.4 37.4 638 2689 10 54 19 11 01 30 --- 15 00 07 40.0 232.6 2.5 38.5 420 2745 10 54 20 11 01 30 1226+023 15 00 07 40.0 232.6 2.5 38.5 -20 2745 11 01 50 11 08 30 --- 15 07 08 38.8 234.3 2.6 39.5 400 2797 11 01 31 ---------- rest antennas on target ---------- 11 10 00 1226+023 15 08 38 38.6 234.7 2.6 39.8 69 2797 11 09 49 11 20 00 --- 15 18 40 37.0 237.1 2.8 41.2 600 2875 11 09 50 11 20 30 1226+023 15 19 10 36.9 237.2 2.8 41.2 9 2875 11 20 21 11 29 30 --- 15 28 11 35.4 239.3 3.0 42.4 540 2946 11 20 20 11 30 00 1226+023 15 28 41 35.3 239.4 3.0 42.4 9 2946 11 29 51 11 36 00 --- 15 34 42 34.3 240.8 3.1 43.2 360 2994 11 29 50 11 44 00 0923+392 15 42 44 20.6 304.0 6.2 56.6 233 2994 11 43 49 11 49 00 --- 15 47 44 19.8 304.6 6.3 56.1 300 3034 11 43 50 Schedule for GBT_COLD (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 ---------------------------------------------------------------------------------------- --- Fri 9 Feb 2018 Day 40 --- ---------- All except VLA back to target in K-band ---------- 11 55 00 1226+023 15 53 45 31.0 244.8 3.4 45.2 122 3034 11 54 49 12 21 00 --- 16 19 50 26.3 249.9 3.8 47.4 1560 3236 11 54 50 ---------- This is an 8-min pointing & focus scan for GBT ---------- 12 21 30 1226+023 16 20 20 26.2 250.0 3.8 47.4 9 3236 Stopped 12 29 30 --- 16 28 21 24.7 251.5 4.0 48.0 480 3236 ---------- K-band VLBI scans. Space segment 05: 1226+023 with EVN+GBT+VLBA ---------- 12 30 00 1226+023 16 28 51 24.6 251.6 4.0 48.1 9 3236 12 29 51 12 31 00 --- 16 29 51 24.4 251.8 4.0 48.1 60 3245 12 29 50 12 31 10 1226+023 16 30 01 24.4 251.8 4.0 48.1 -11 3245 12 31 21 12 40 00 --- 16 38 53 22.7 253.4 4.1 48.7 519 3312 12 31 01 12 40 30 1226+023 16 39 23 22.6 253.5 4.2 48.7 9 3312 12 40 21 12 41 30 --- 16 40 23 22.4 253.7 4.2 48.8 60 3321 12 40 20 12 41 40 1226+023 16 40 33 22.4 253.7 4.2 48.8 -11 3321 12 41 51 12 50 00 --- 16 48 54 20.8 255.2 4.3 49.3 489 3384 12 41 31 12 50 30 1226+023 16 49 24 20.7 255.3 4.3 49.3 9 3384 12 50 21 12 51 30 --- 16 50 25 20.5 255.5 4.3 49.4 60 3392 12 50 20 12 51 40 1226+023 16 50 35 20.5 255.5 4.3 49.4 -11 3392 12 51 51 13 00 00 --- 16 58 56 18.9 256.9 4.5 49.8 489 3455 12 51 31 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 ./gg083d_freq.dat: gbt1cm_a4 LO1=28.868, LO2=16.532, LO3=10.5 Setup group: 11 Station: GBT_COLD 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: 47 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: 47 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) * FAKERA 11 57 21.769299 * 12 00 00.000000 12 01 00.483936 0.00 85 16 41.77889 * 85 00 00.00000 84 53 47.52470 0.00 From catalog imbedded in main SCHED input file. fake circumpolar target for a TS to look at 1328+307 13 28 49.657778 * 13 31 08.288070 13 31 58.208451 0.00 J1331+3030 30 45 58.64060 * 30 30 32.95924 30 24 50.67595 0.00 * 3C286 ./gg083d_sources.radioastron WSRT calibrator, not for 92cm, rfc_2013d Petrov, 2013, unpublished 542 observati * 0727-115 07 27 58.097813 * 07 30 19.112473 07 31 10.802612 0.00 J0730-1141 -11 34 52.58107 *-11 41 12.60063 -11 43 44.55700 0.00 ./gg083d_sources.radioastron AGN, rfc_2013d Petrov, 2013, unpublished 155894 observations, RA-AO3-04, RA-AO2- * 0923+392 09 23 55.319218 * 09 27 03.013939 09 28 11.366254 0.00 J0927+3902 39 15 23.56637 * 39 02 20.85177 38 57 28.85387 0.00 4C39.25 ./gg083d_sources.radioastron AGN, rfc_2013d Petrov, 2013, unpublished 245863 observations, RA-AO3-04, RA-AO3- * 1226+023 12 26 33.245835 * 12 29 06.699731 12 30 02.412902 0.00 J1229+0203 02 19 43.30547 * 02 03 08.59797 01 57 07.17814 0.00 3C273B ./gg083d_sources.radioastron 3C273 AGN, rfc_2013d Petrov, 2013, unpublished 32011 observations, RA-AO3-04, RA-AO3-0 1253-055 12 53 35.831289 * 12 56 11.166557 12 57 07.519618 0.00 J1256-0547 -05 31 07.99603 *-05 47 21.52489 -05 53 12.02711 0.00 * 3C279 ./gg083d_sources.radioastron AGN, rfc_2013d Petrov, 2013, unpublished 7924 observations, RA-AO3-04, RA-AO3-05 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 FAKERA ra1cm2.set 14 5.283 0.000 3C286 ra1cm2.set 53 0.500 0.000 ra2cm2.set 54 0.500 0.000 ra7mm2.set 52 0.500 0.000 0727-115 ra1cm2.set 56 57 58 59 60 1.686 16.383 0923+392 ra1cm2.set 1 2 3 4 5 6 7 9 12 13 29 47 + 1.583 49.745 ra2cm2.set 38 54 0.667 20.333 ra7mm2.set 15 16 19 20 52 1.483 32.239 1226+023 ra1cm2.set 1 2 3 4 5 6 7 9 12 13 29 47 + 20.494 1018.787 ra2cm2.set 38 51 54 0.883 38.200 ra7mm2.set 15 16 19 20 52 1.642 47.821 3C279 ra1cm2.set 56 57 58 59 60 0.164 1.590 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) FAKERA 108.7 3C286 123.0 0727-115 140.1 0923+392 155.6 1226+023 134.3 3C279 125.2 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