COVER INFORMATION Station: ONSALA85 (Code On ) Experiment: RadioAstron observations of Crab pulsar Exp. Code: eg075 Schedule Version: 1.00 Processed by SCHED version: 11.10 Version 11.1 Beta of about April 26, 201 PI: Carl Gwinn Address: Physics Department, Broida Hall UC Santa Barbara Santa Barbara CA 93106, USA Phone: +1-805-893-2814 EMAIL: cgwinn@physics.ucsb.edu Fax: +1-805-893-8597 Phone during observation: +7-903-661-4865 Observing mode: L-band, dual-pol Notes: L-band, Radioastron-compatible frequency setup P-CAL is OFF Tsys is OFF auto-level (AGC) is OFF Schedule for ONSALA85 (Code On ) Page 2 RadioAstron observations of Crab pulsar 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 27 Oct 2013 Day 300 --- ---------- This is a 1min calibration scan with auto-level (AGC) ON ---------- Next scan frequencies: 1668.00 1668.00 1668.00 1668.00 Next BBC frequencies: 448.00 448.00 448.00 448.00 Next scan bandwidths: 16.00 16.00 16.00 16.00 05 58 00 CRAB 09 08 43 37.9 250.4 3.6 0.0 0 0 Stopped 05 59 00 --- 09 09 43 37.8 250.7 3.6 0.0 60 0 ---------- Please make sure Pcal, noise diode (Tsys) and auto-level (AGC) are OFF now ---------- 06 00 00 CRAB 09 10 43 37.6 250.9 3.6 0.0 54 0 06 00 00 06 09 30 --- 09 20 15 36.4 253.2 3.7 0.0 570 18 06 00 01 06 10 00 CRAB 09 20 45 36.4 253.3 3.8 0.0 24 18 06 10 00 06 19 30 --- 09 30 16 35.1 255.6 3.9 0.0 570 37 06 10 01 06 20 00 CRAB 09 30 46 35.1 255.7 3.9 0.0 24 37 06 20 00 06 29 30 --- 09 40 18 33.8 257.9 4.1 0.0 570 55 06 20 01 06 30 00 CRAB 09 40 48 33.7 258.0 4.1 0.0 24 55 06 30 00 06 39 30 --- 09 50 20 32.5 260.2 4.2 0.0 570 73 06 30 01 06 40 00 CRAB 09 50 50 32.4 260.3 4.3 0.0 24 73 06 40 00 06 49 30 --- 10 00 21 31.1 262.4 4.4 0.0 570 91 06 40 01 06 50 00 CRAB 10 00 51 31.1 262.6 4.4 0.0 24 91 06 50 00 06 59 30 --- 10 10 23 29.8 264.6 4.6 0.0 570 110 06 50 01 07 00 00 CRAB 10 10 53 29.7 264.8 4.6 0.0 24 110 07 00 00 07 09 30 --- 10 20 25 28.5 266.8 4.8 0.0 570 128 07 00 01 07 10 00 CRAB 10 20 55 28.4 266.9 4.8 0.0 24 128 07 10 00 07 19 30 --- 10 30 26 27.1 268.9 4.9 0.0 570 146 07 10 01 07 20 00 CRAB 10 30 56 27.0 269.1 4.9 0.0 24 146 07 20 00 07 29 30 --- 10 40 28 25.7 271.1 5.1 0.0 570 164 07 20 01 07 30 00 CRAB 10 40 58 25.7 271.2 5.1 0.0 24 164 07 30 00 07 39 30 --- 10 50 30 24.4 273.1 5.3 0.0 570 183 07 30 01 07 40 00 CRAB 10 51 00 24.3 273.3 5.3 0.0 24 183 07 40 00 07 49 30 --- 11 00 31 23.1 275.2 5.4 0.0 570 201 07 40 01 07 50 00 CRAB 11 01 01 23.0 275.3 5.4 0.0 24 201 07 50 00 07 59 30 --- 11 10 33 21.7 277.3 5.6 0.0 570 219 07 50 01 Schedule for ONSALA85 (Code On ) Page 3 RadioAstron observations of Crab pulsar 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 27 Oct 2013 Day 300 --- 08 00 00 CRAB 11 11 03 21.6 277.4 5.6 0.0 24 219 08 00 00 08 09 30 --- 11 20 34 20.4 279.3 5.8 0.0 570 237 08 00 01 08 10 00 CRAB 11 21 05 20.3 279.4 5.8 0.0 24 237 08 10 00 08 19 30 --- 11 30 36 19.0 281.3 5.9 0.0 570 256 08 10 01 08 20 00 CRAB 11 31 06 19.0 281.4 5.9 0.0 24 256 08 20 00 08 29 30 --- 11 40 38 17.7 283.3 6.1 0.0 570 274 08 20 01 08 30 00 CRAB 11 41 08 17.7 283.4 6.1 0.0 24 274 08 30 00 08 39 30 --- 11 50 39 16.4 285.4 6.3 0.0 570 292 08 30 01 08 40 00 CRAB 11 51 09 16.4 285.5 6.3 0.0 24 292 08 40 00 08 49 30 --- 12 00 41 15.1 287.4 6.4 0.0 570 311 08 40 01 08 50 00 CRAB 12 01 11 15.1 287.5 6.4 0.0 24 311 08 50 00 09 00 00 --- 12 11 13 13.8 289.5 6.6 0.0 600 330 08 50 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: ra18cm2_autolevel.set --- 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: 5 Station: ONSALA85 Total bit rate: 256 Format: MARK5B Bits per sample: 2 Sample rate: 32.000 Number of channels: 4 DBE type: Disk used to record data. Setup not used for recording data. 1st LO= 1220.00 1220.00 1220.00 1220.00 Net SB= U U L L IF SB = U U U U Pol. = RCP LCP RCP LCP BBC = 1 5 1 5 BBC SB= U U L L IF = A2 B4 A2 B4 The following frequency sets based on these setups were used. Frequency Set: 4 Setup file default. LO sum= 1668.00 1668.00 1668.00 1668.00 BBC fr= 448.00 448.00 448.00 448.00 Bandwd= 16.00 16.00 16.00 16.00 Matching frequency sets: 4 ======== Setup file: ra18cm2.set --- 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: 16 Station: ONSALA85 Total bit rate: 256 Format: MARK5B 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= 1220.00 1220.00 1220.00 1220.00 Net SB= U U L L IF SB = U U U U Pol. = RCP LCP RCP LCP BBC = 1 5 1 5 BBC SB= U U L L IF = A2 B4 A2 B4 The following frequency sets based on these setups were used. Frequency Set: 13 Setup file default. LO sum= 1668.00 1668.00 1668.00 1668.00 BBC fr= 448.00 448.00 448.00 448.00 Bandwd= 16.00 16.00 16.00 16.00 Matching frequency sets: 13 Track assignments are: track1= 2, 4, 6, 8 barrel=roll_off POSITIONS OF SOURCES USED IN RECORDING SCANS Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) * CRAB 05 31 31.427725 * 05 34 31.973000 05 35 23.552586 0.00 21 58 54.40670 * 22 00 52.06000 22 01 16.54303 0.00 From catalog imbedded in main SCHED input file. Pulsar * FAKERA 11 57 21.769299 * 12 00 00.000000 12 00 25.703640 0.00 85 16 41.77889 * 85 00 00.00000 84 55 08.19093 0.00 From catalog imbedded in main SCHED input file. fake circumpolar target for the TS to look at 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 CRAB ra18cm2.set 10 11 12 13 14 15 16 17 18 + 2.858 116.233 FAKERA ra18cm2.set 18 2.858 0.000 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) CRAB 129.7 FAKERA 98.5 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