COVER INFORMATION Station: ARECIBO (Code Ar ) 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 ARECIBO (Code Ar ) 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 --- Next scan frequencies: 1668.00 1668.00 1668.00 1668.00 Next BBC frequencies: 767.00 767.00 767.00 767.00 Next scan bandwidths: 16.00 16.00 16.00 16.00 06 10 00 CRAB 04 06 04 68.7 76.3 -1.5 D -95.9 0 0 06 10 00 06 19 30 --- 04 15 35 70.9 75.5 -1.3 -97.5 0 18 06 10 01 06 20 00 CRAB 04 16 06 71.0 75.5 -1.3 -97.6 21 18 06 20 00 06 29 30 --- 04 25 37 73.2 74.4 -1.2 -99.5 570 36 06 20 01 06 30 00 CRAB 04 26 07 73.3 74.3 -1.2 -99.6 21 36 06 30 00 06 39 30 --- 04 35 39 75.5 72.8 -1.0 -102.0 570 55 06 30 01 06 40 00 CRAB 04 36 09 75.6 72.7 -1.0 -102.2 21 55 06 40 00 06 49 30 --- 04 45 40 77.8 70.4 -0.8 -105.3 570 73 06 40 01 06 50 00 CRAB 04 46 10 77.9 70.3 -0.8 -105.5 21 73 06 50 00 06 59 30 --- 04 55 42 80.0 66.8 -0.7 -109.8 570 91 06 50 01 07 00 00 CRAB 04 56 12 80.1 66.6 -0.7 -110.0 21 91 07 00 00 07 09 30 --- 05 05 44 82.1 60.9 -0.5 -116.5 570 109 07 00 01 07 10 00 CRAB 05 06 14 82.2 60.5 -0.5 -117.0 21 109 07 10 00 07 19 30 --- 05 15 45 84.1 50.6 -0.3 -127.7 570 128 07 10 01 07 20 00 CRAB 05 16 15 84.2 49.9 -0.3 -128.5 21 128 07 20 00 07 29 30 --- 05 25 47 85.7 31.1 -0.2 -148.1 570 146 07 20 01 07 30 00 CRAB 05 26 17 85.7 389.8 -0.2 W -149.4 -730 146 07 42 10 07 39 30 --- 05 35 49 86.3 358.5 0.0 W 178.5 0 164 07 30 01 07 40 00 CRAB 05 36 19 86.3 356.7 0.0 176.6 18 164 07 40 00 07 49 30 --- 05 45 50 85.6 326.8 0.2 145.9 570 182 07 40 01 07 50 00 CRAB 05 46 20 85.5 325.5 0.2 144.6 20 182 07 50 00 07 59 30 --- 05 55 52 84.0 308.3 0.3 126.5 570 201 07 50 01 08 00 00 CRAB 05 56 22 83.9 307.6 0.3 125.8 21 201 08 00 00 08 09 30 --- 06 05 54 82.0 298.5 0.5 115.8 570 219 08 00 01 08 10 00 CRAB 06 06 24 81.9 298.1 0.5 115.4 21 219 08 10 00 08 19 30 --- 06 15 55 79.8 292.8 0.7 109.3 570 237 08 10 01 08 20 00 CRAB 06 16 25 79.7 292.6 0.7 109.1 21 237 08 20 00 08 29 30 --- 06 25 57 77.6 289.3 0.8 105.0 570 255 08 20 01 Schedule for ARECIBO (Code Ar ) 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 30 00 CRAB 06 26 27 77.5 289.2 0.9 104.8 21 255 08 30 00 08 39 30 --- 06 35 58 75.3 287.0 1.0 101.8 570 274 08 30 01 08 40 00 CRAB 06 36 29 75.2 287.0 1.0 101.7 21 274 08 40 00 08 49 30 --- 06 46 00 73.0 285.5 1.2 99.3 570 292 08 40 01 08 50 00 CRAB 06 46 30 72.9 285.4 1.2 99.2 21 292 08 50 00 09 00 00 --- 06 56 32 70.6 284.4 1.4 97.3 600 311 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.set Matching groups in ./eg075.freq.sess313rdbe.dat: arlbw4 RX=LBW, with lfbf=4, TG 07-Oct-01 Setup group: 14 Station: ARECIBO Total bit rate: 256 Format: MKIV1:4 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= 2435.00 2435.00 2435.00 2435.00 Net SB= L L U U IF SB = L L L L 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: 19 Setup file default. Used pcal sets: 1 LO sum= 1668.00 1668.00 1668.00 1668.00 BBC fr= 767.00 767.00 767.00 767.00 Bandwd= 16.00 16.00 16.00 16.00 Matching frequency sets: 19 The following pulse cal sets were used with this setup: Pulse cal detection set: 1 PCAL = OFF PCALXB1= S1 S2 S3 S4 OFF OFF OFF OFF PCALXB2= M1 M2 M3 M4 OFF OFF OFF OFF PCALFR1= 0 0 0 0 0 0 0 0 PCALFR2= 0 0 0 0 0 0 0 0 Track assignments are: track1= 2, 18, 3, 19 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