COVER INFORMATION Station: VLBA_FD (Code Fd ) Experiment: RadioAstron AGN polarization imaging Exp. Code: gg081l Schedule Version: 1.00 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,Q-band, dual-pol Notes: K-band, Radioastron-compatible frequency setup P-CAL is ON Tsys is ON auto-level (AGC) is ON Schedule for VLBA_FD (Code Fd ) Page 2 RadioAstron AGN 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 ---------------------------------------------------------------------------------------- --- Mon 13 Mar 2017 Day 72 --- ---------- K-band VLBI scans. Ground-only segment 01: 0851+202 with VLBA ---------- Next scan frequencies: 22220.00 22220.00 22252.00 22252.00 22284.00 22284.00 22316.00 22316.00 Next BBC frequencies: 720.00 720.00 752.00 752.00 784.00 784.00 816.00 816.00 Next scan bandwidths: 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 06 30 00 0851+202 10 58 34 60.4 256.3 2.0 62.9 0 0 06 30 00 06 40 00 --- 11 08 35 58.3 258.4 2.2 63.8 600 77 06 30 01 06 40 30 0851+202 11 09 06 58.2 258.5 2.2 63.8 24 77 06 40 30 06 50 00 --- 11 18 37 56.2 260.3 2.4 64.5 570 151 06 40 31 06 50 30 0851+202 11 19 07 56.1 260.4 2.4 64.6 24 151 06 50 30 07 00 00 --- 11 28 39 54.1 262.0 2.5 65.1 570 224 06 50 31 07 00 30 0851+202 11 29 09 54.0 262.1 2.6 65.1 24 224 07 00 30 07 10 00 --- 11 38 40 51.9 263.7 2.7 65.5 570 298 07 00 31 07 10 30 0851+202 11 39 11 51.8 263.7 2.7 65.6 24 298 07 10 30 07 20 00 --- 11 48 42 49.8 265.2 2.9 65.9 570 371 07 10 31 07 20 30 0851+202 11 49 12 49.7 265.3 2.9 65.9 24 371 07 20 30 07 30 00 --- 11 58 44 47.6 266.7 3.0 66.1 570 444 07 20 31 07 30 30 0851+202 11 59 14 47.5 266.7 3.1 66.1 24 444 07 30 30 07 40 00 --- 12 08 45 45.5 268.0 3.2 66.3 570 518 07 30 31 07 40 30 0851+202 12 09 15 45.4 268.1 3.2 66.3 24 518 07 40 30 07 50 00 --- 12 18 47 43.3 269.4 3.4 66.3 570 591 07 40 31 07 50 30 0851+202 12 19 17 43.2 269.4 3.4 66.3 24 591 07 50 30 08 00 00 --- 12 28 49 41.2 270.6 3.6 66.3 570 665 07 50 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 ./gg081l_freq.dat: v1cm_b3 Setup group: 7 Station: VLBA_FD 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= 21500.00 21500.00 21500.00 21500.00 21500.00 21500.00 21500.00 21500.00 Net SB= U U U U U U U U IF SB = U U U U U U U U Pol. = RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 2 3 4 5 6 7 8 BBC SB= U U U U U U U U IF = B D B D B D B D VLBA FE= omit 1cm omit 1cm VLBA Synth= 9.1 6.1 12.4 The following frequency sets based on these setups were used. See the crd files for VLBA legacy system setups and pcal detection details. Frequency Set: 1 Setup file default. Used with PCAL = 1MHz LO sum= 22220.00 22220.00 22252.00 22252.00 22284.00 22284.00 22316.00 22316.00 BBC fr= 720.00 720.00 752.00 752.00 784.00 784.00 816.00 816.00 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= 759.99 759.99 791.99 791.99 CRD bw= 16.00 16.00 16.00 16.00 Matching frequency sets: 1 2 3 4 5 6 7 8 9 10 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) * 0851+202 08 51 57.250618 * 08 54 48.874930 08 55 48.228658 0.00 J0854+2006 20 17 58.41733 * 20 06 30.64078 20 02 24.96289 0.00 OJ287 ./gg081l_sources.radioastron AGN, rfc_2013d Petrov, 2013, unpublished 213710 observations, RA-AO3-04, RA-AO3- 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 0851+202 ra1cm2.set 1 1.433 64.500 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) 0851+202 137.8 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