COVER INFORMATION Station: GBT_VLBA (Code Gb ) Experiment: Radioastron-EVN-Gb-Ev: 0642+449 Exp. Code: gk047a Schedule Version: 1.00 Processed by SCHED version: 10.20 Release of about July 12, 2012 PI: Yuri Kovalev Address: ASC Lebedev Profsoyuznaya 84/32 117997 Moscow, Russia Phone: +7-495-3332167 EMAIL: yyk@asc.rssi.ru Fax: +7-495-3332378 Phone during observation: +7-915-1546281 Observing mode: L-band, dual-pol Notes: L-band, Radioastron-compatible frequency setup PCAL is ON Mk5 disk packs should be sent for correlation to Bonn Schedule for GBT_VLBA (Code Gb ) Page 2 Radioastron-EVN-Gb-Ev: 0642+449 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 ---------------------------------------------------------------------------------------- --- Sat 9 Mar 2013 Day 68 --- Next scan frequencies: 1668.00 1668.00 1668.00 1668.00 Next BBC frequencies: 632.00 632.00 632.00 632.00 Next scan bandwidths: 16.00 16.00 16.00 16.00 17 10 00 0642+449 23 00 51 10.9 40.2 -7.8 -45.5 0 0 17 10 00 17 19 30 --- 23 10 22 12.1 41.4 -7.6 -46.9 570 18 17 10 01 17 20 00 0642+449 23 10 52 12.2 41.4 -7.6 -47.0 9 18 17 20 00 17 29 30 --- 23 20 24 13.4 42.6 -7.5 -48.4 570 37 17 20 01 17 30 00 0642+449 23 20 54 13.5 42.7 -7.4 -48.5 9 37 17 30 00 17 39 30 --- 23 30 25 14.8 43.8 -7.3 -49.9 570 55 17 30 01 17 40 00 0642+449 23 30 55 14.8 43.9 -7.3 -50.0 9 55 17 40 00 17 49 30 --- 23 40 27 16.1 45.0 -7.1 -51.3 570 74 17 40 01 17 50 10 0642+449 23 41 07 16.2 45.1 -7.1 -51.4 19 74 17 50 10 17 58 40 --- 23 49 59 17.5 46.1 -7.0 -52.7 510 90 17 50 11 17 59 22 0642+449 23 50 21 17.5 46.1 -7.0 -52.8 20 90 17 59 22 18 07 52 --- 23 59 12 18.8 47.1 -6.8 -54.0 510 106 17 59 23 18 48 06 0642+449 00 39 13 24.7 51.3 -6.1 -59.5 2393 106 18 48 06 18 56 26 --- 00 47 54 26.1 52.1 -6.0 -60.7 500 123 18 48 07 18 57 00 0642+449 00 48 08 26.1 52.1 -6.0 -60.7 12 123 18 57 00 19 06 30 --- 00 57 40 27.6 53.0 -5.8 -62.0 570 141 18 57 01 19 07 00 0642+449 00 58 10 27.7 53.1 -5.8 -62.1 9 141 19 07 00 19 16 30 --- 01 07 41 29.2 54.0 -5.7 -63.3 570 159 19 07 01 19 17 00 0642+449 01 08 11 29.2 54.0 -5.7 -63.4 9 159 19 17 00 19 26 30 --- 01 17 43 30.7 54.9 -5.5 -64.6 570 178 19 17 01 19 27 00 0642+449 01 18 13 30.8 54.9 -5.5 -64.7 9 178 19 27 00 19 36 30 --- 01 27 45 32.4 55.7 -5.3 -65.9 570 196 19 27 01 20 00 45 0642+449 01 52 04 36.3 57.7 -4.9 -69.1 1433 196 20 00 45 20 07 45 --- 01 59 25 37.6 58.3 -4.8 -70.1 420 210 20 00 46 20 44 00 0642+449 02 35 26 43.7 60.9 -4.2 -74.8 2153 210 20 44 00 20 53 30 --- 02 44 57 45.3 61.4 -4.0 -76.0 570 228 20 44 01 20 54 00 0642+449 02 45 27 45.4 61.5 -4.0 -76.1 9 228 20 54 00 21 03 30 --- 02 54 59 47.0 62.0 -3.9 -77.4 570 246 20 54 01 Schedule for GBT_VLBA (Code Gb ) Page 3 Radioastron-EVN-Gb-Ev: 0642+449 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 ---------------------------------------------------------------------------------------- --- Sat 9 Mar 2013 Day 68 --- 21 04 00 0642+449 02 55 29 47.1 62.1 -3.9 -77.4 9 246 21 04 00 21 13 30 --- 03 05 01 48.8 62.6 -3.7 -78.7 570 265 21 04 01 21 14 00 0642+449 03 05 31 48.8 62.6 -3.7 -78.8 9 265 21 14 00 21 23 30 --- 03 15 02 50.5 63.1 -3.5 -80.1 570 283 21 14 01 21 24 00 0642+449 03 15 32 50.6 63.1 -3.5 -80.2 9 283 21 24 00 21 34 00 --- 03 25 34 52.3 63.6 -3.4 -81.6 600 303 21 24 01 21 40 56 0851+202 03 32 31 19.3 79.3 -5.4 -55.0 276 303 21 40 56 21 50 56 --- 03 42 52 21.3 80.8 -5.2 -55.4 600 322 21 40 57 22 20 19 0642+449 04 12 00 60.5 64.8 -2.6 -88.7 1622 322 22 20 19 22 30 19 --- 04 22 22 62.4 64.8 -2.4 -90.5 600 341 22 20 20 22 31 00 0642+449 04 22 43 62.4 64.8 -2.4 -90.6 19 341 22 31 00 22 40 30 --- 04 32 15 64.1 64.7 -2.3 -92.4 570 360 22 31 01 22 41 00 0642+449 04 32 45 64.2 64.7 -2.2 -92.5 9 360 22 41 00 22 50 30 --- 04 42 17 65.9 64.5 -2.1 -94.4 570 378 22 41 01 22 51 00 0642+449 04 42 47 66.0 64.5 -2.1 -94.5 9 378 22 51 00 23 00 30 --- 04 52 18 67.7 64.1 -1.9 -96.5 570 396 22 51 01 23 01 00 0642+449 04 52 48 67.8 64.0 -1.9 -96.6 9 396 23 01 00 23 10 30 --- 05 02 20 69.4 63.4 -1.8 -98.9 570 415 23 01 01 23 11 00 0642+449 05 02 50 69.5 63.4 -1.7 -99.0 9 415 23 11 00 23 21 10 --- 05 13 02 71.3 62.4 -1.6 -101.7 610 434 23 11 01 23 28 50 0851+202 05 20 43 40.4 95.8 -3.6 -56.1 327 434 23 28 50 23 39 00 --- 05 31 14 42.5 97.6 -3.4 -55.7 610 454 23 28 51 --- Sun 10 Mar 2013 Day 69 --- 00 09 11 0642+449 06 01 10 79.2 49.8 -0.8 -122.5 1677 454 00 09 11 00 19 21 --- 06 11 42 80.7 43.4 -0.6 -130.7 610 474 00 09 12 00 20 00 0642+449 06 12 01 80.8 43.1 -0.6 -131.0 16 474 00 20 00 00 29 30 --- 06 21 33 82.0 35.0 -0.4 -140.6 570 492 00 20 01 00 30 00 0642+449 06 22 03 82.0 34.5 -0.4 -141.2 7 492 00 30 00 00 39 30 --- 06 31 34 82.9 23.6 -0.3 -153.7 570 511 00 30 01 Schedule for GBT_VLBA (Code Gb ) Page 4 Radioastron-EVN-Gb-Ev: 0642+449 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 ---------------------------------------------------------------------------------------- --- Sun 10 Mar 2013 Day 69 --- 00 40 00 0642+449 06 32 04 83.0 23.0 -0.3 -154.4 6 511 00 40 00 00 49 30 --- 06 41 36 83.5 9.3 -0.1 -169.7 570 529 00 40 01 00 50 00 0642+449 06 42 06 83.5 8.5 -0.1 -170.6 6 529 00 50 00 00 59 30 --- 06 51 38 83.5 -6.5 0.1 172.8 570 547 00 50 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess113.L256 Matching groups in /usr/local/sched/catalogs/freq.dat: gbt18cm LO1=4.550, LO2=12.75, LO3=10.5 Setup group: 8 Station: GBT_VLBA Total bit rate: 256 Format: VLBA1:4 Bits per sample: 2 Sample rate: 32.000 Number of channels: 4 DBE type: Speedup factor: 1.00 Disk used to record data. 1st LO= 2300.00 2300.00 2300.00 2300.00 Net SB= L L U U Pol. = RCP LCP RCP LCP BBC = 1 2 1 2 BBC SB= U U L L IF = A C A C The following frequency sets based on these setups were used. Frequency Set: 11 Setup file default. Used pcal sets: 1 LO sum= 1668.00 1668.00 1668.00 1668.00 BBC fr= 632.00 632.00 632.00 632.00 Bandwd= 16.00 16.00 16.00 16.00 Matching frequency sets: 11 The following pulse cal sets were used with this setup: Pulse cal detection set: 1 PCAL = 1MHZ PCALXB1= S1 S3 S1 S3 S1 S2 S3 S4 PCALXB2= S2 S4 S2 S4 M1 M2 M3 M4 PCALFR1= 1000 1000 13000 13000 0 0 0 0 PCALFR2= 1000 1000 13000 13000 0 0 0 0 Track assignments are: track1= 2, 18, 3, 19 barrel=roll_off SOURCES USED IN RECORDING SCANS -- Radioastron-EVN-Gb-Ev: 0642+449 Catalog positions marked with *. Precession of date coordinates is based on stop time of first scan. Names used in schedule marked with *. Short names used in VLA and SNAP files marked with +. Observation date used in B1950/J2000 coordinate conversion (PRECDATE): 1979.900 No adjustments are made for rates (DRA, DDEC). Scan hours are for recording scans only. Baseline hours are only counted for scans above horizon at both ends. Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) J0646+4451 06 42 53.021452 * 06 46 32.025999 06 47 31.646758 0.14 * 0642+449 44 54 30.82734 * 44 51 16.59009 44 50 22.84237 0.10 J0646+44 /usr/local/sched/catalogs/sources.vlba rfc_2012b Petrov, 2012, unpublished 125872 observations 10.258 scan and 388.050 baseline hours in setup: sess113.L256 Frequency sets (dups not shown): 1 2 3 4 5 6 8 9 11 12 J0854+2006 08 51 57.250618 * 08 54 48.874930 08 55 36.082187 0.11 * 0851+202 20 17 58.41733 * 20 06 30.64078 20 03 15.97687 0.10 J0854+20 /usr/local/sched/catalogs/sources.vlba OJ287 rfc_2012b Petrov, 2012, unpublished 191510 observations 1.069 scan and 48.286 baseline hours in setup: sess113.L256 Frequency sets (dups not shown): 1 2 3 4 5 6 8 9 11 12 J1331+3030 13 28 49.657778 * 13 31 08.288070 13 31 46.592508 0.20 3C286 30 45 58.64061 * 30 30 32.95925 30 26 13.73130 0.19 * 1328+307 /usr/local/sched/catalogs/sources.vlba J1331+30 rfc_2012b Petrov, 2012, unpublished 542 observations 0.708 scan and 29.036 baseline hours in setup: sess113.L256 Frequency sets (dups not shown): 1 2 3 4 5 6 8 9 12 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) 0642+449 108.3 0851+202 141.3 1328+307 139.5 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