COVER INFORMATION Station: JODRELL1 (Code Jb ) Experiment: 2 Gbps DDC test using the v105E firmware Exp. Code: FR022 Schedule Version: 1.00 Processed by SCHED version: 11.30 Version 11.3 update 1. April 14, 2014 PI: Bob Campbell Address: JIVE Oude Hoogeveensedijk 4 7991PD Dwingeloo NL Phone: +31-(0)521-596-534 EMAIL: campbell@jive.nl Fax: Phone during observation: +31-(0)521-596-534 Observing mode: Notes: 2Gbps DDC test using the v105E firmware Schedule for JODRELL1 (Code Jb ) Page 2 2 Gbps DDC test using the v105E firmware 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 6 Mar 2015 Day 65 --- Next scan frequencies: 4804.00 4804.00 4804.00 4804.00 4836.00 4836.00 4836.00 4836.00 4868.00 4868.00 4868.00 4868.00 4900.00 4900.00 4900.00 4900.00 Next BBC frequencies: 104.00 104.00 104.00 104.00 136.00 136.00 136.00 136.00 168.00 168.00 168.00 168.00 200.00 200.00 200.00 200.00 Next scan bandwidths: 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 12 00 00 0234+285 22 46 23 41.6 96.3 -3.9 -42.8 0 0 12 00 00 12 07 00 --- 22 53 24 42.6 97.8 -3.8 -42.6 420 54 12 00 04 12 08 00 0234+285 22 54 24 42.8 98.0 -3.7 -42.6 52 54 12 08 00 12 15 00 --- 23 01 25 43.8 99.6 -3.6 -42.4 420 108 12 08 04 12 23 00 0234+285 23 09 27 45.0 101.4 -3.5 -42.1 471 108 12 23 00 12 30 00 --- 23 16 28 46.0 103.0 -3.4 -41.7 420 161 12 23 04 12 31 00 0234+285 23 17 28 46.2 103.3 -3.4 -41.7 52 161 12 31 00 12 38 00 --- 23 24 29 47.2 104.9 -3.2 -41.3 420 215 12 31 04 12 39 00 0234+285 23 25 29 47.3 105.2 -3.2 -41.3 52 215 12 39 00 12 45 00 --- 23 31 30 48.2 106.7 -3.1 -40.9 360 261 12 39 04 12 53 00 0234+285 23 39 32 49.3 108.7 -3.0 -40.3 471 261 12 53 00 13 00 00 --- 23 46 33 50.3 110.5 -2.9 -39.8 420 315 12 53 04 13 01 00 0234+285 23 47 33 50.5 110.8 -2.9 -39.7 52 315 13 01 00 13 08 00 --- 23 54 34 51.4 112.7 -2.7 -39.1 420 369 13 01 04 13 09 00 0234+285 23 55 34 51.6 112.9 -2.7 -39.0 52 369 13 09 00 13 15 00 --- 00 01 35 52.4 114.6 -2.6 -38.4 360 415 13 09 04 13 23 00 0234+285 00 09 37 53.5 116.9 -2.5 -37.6 470 415 13 23 00 13 28 00 --- 00 14 37 54.2 118.4 -2.4 -37.0 300 453 13 23 04 13 31 00 0234+285 00 17 38 54.5 119.3 -2.4 -36.6 171 453 13 31 00 13 38 00 --- 00 24 39 55.5 121.5 -2.2 -35.7 420 507 13 31 04 13 39 00 0234+285 00 25 39 55.6 121.8 -2.2 -35.5 52 507 13 39 00 13 45 00 --- 00 31 40 56.3 123.7 -2.1 -34.7 360 553 13 39 04 13 53 00 0234+285 00 39 41 57.3 126.4 -2.0 -33.4 470 553 13 53 00 14 00 00 --- 00 46 43 58.2 128.8 -1.9 -32.2 420 607 13 53 04 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: sess115.C2048 --- 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: 13 Station: JODRELL1 Total bit rate: 1024 Format: MKIV1:2 Bits per sample: 2 Sample rate: 32.000 Number of channels: 16 DBE type: Speedup factor: 0.50 Disk used to record data. 1st LO= 4700.00 4700.00 4700.00 4700.00 4700.00 4700.00 4700.00 4700.00 4700.00 4700.00 4700.00 4700.00 4700.00 4700.00 4700.00 4700.00 Net SB= L L U U L L U U L L U U L L U U IF SB = U U U U U U U U U U U U U U U U Pol. = RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP BBC = 2 1 2 1 4 3 4 3 6 5 6 5 8 7 8 7 BBC SB= L L U U L L U U L L U U L L U U IF = 2N 1N 2N 1N 2N 1N 2N 1N 2N 1N 2N 1N 2N 1N 2N 1N The following frequency sets based on these setups were used. Frequency Set: 13 Setup file default. Used with PCAL = off LO sum= 4804.00 4804.00 4804.00 4804.00 4836.00 4836.00 4836.00 4836.00 4868.00 4868.00 4868.00 4868.00 4900.00 4900.00 4900.00 4900.00 BBC fr= 104.00 104.00 104.00 104.00 136.00 136.00 136.00 136.00 168.00 168.00 168.00 168.00 200.00 200.00 200.00 200.00 Bandwd= 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 Matching frequency sets: 13 Track assignments are: track1= 2, 10, 18, 26, 3, 11, 19, 27, 66, 74, 82, 90, 67, 75, 83, 91 barrel=roll_off ======== Setup file: sess115.C1024 --- 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: 26 Station: JODRELL1 Total bit rate: 1024 Format: MKIV1:2 Bits per sample: 2 Sample rate: 32.000 Number of channels: 16 DBE type: Speedup factor: 0.50 Disk used to record data. 1st LO= 4700.00 4700.00 4700.00 4700.00 4700.00 4700.00 4700.00 4700.00 4700.00 4700.00 4700.00 4700.00 4700.00 4700.00 4700.00 4700.00 Net SB= L L U U L L U U L L U U L L U U IF SB = U U U U U U U U U U U U U U U U Pol. = RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP BBC = 2 1 2 1 4 3 4 3 6 5 6 5 8 7 8 7 BBC SB= L L U U L L U U L L U U L L U U IF = 2N 1N 2N 1N 2N 1N 2N 1N 2N 1N 2N 1N 2N 1N 2N 1N The following frequency sets based on these setups were used. Frequency Set: 27 Setup file default. Used with PCAL = off LO sum= 4804.00 4804.00 4804.00 4804.00 4836.00 4836.00 4836.00 4836.00 4868.00 4868.00 4868.00 4868.00 4900.00 4900.00 4900.00 4900.00 BBC fr= 104.00 104.00 104.00 104.00 136.00 136.00 136.00 136.00 168.00 168.00 168.00 168.00 200.00 200.00 200.00 200.00 Bandwd= 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 16.00 Matching frequency sets: 27 Track assignments are: track1= 2, 10, 18, 26, 3, 11, 19, 27, 66, 74, 82, 90, 67, 75, 83, 91 barrel=roll_off POSITIONS OF SOURCES USED IN RECORDING SCANS Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) J0237+2848 02 34 55.589591 * 02 37 52.405678 02 38 45.920484 0.11 * 0234+285 28 35 11.40773 * 28 48 08.98998 28 51 59.98750 0.10 J0237+28 /home/guest/rmc/SCHED/sched11.3u1/catalogs/sources.vlba rfc_2012b Petrov, 2012, unpublished 56811 observations 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 0234+285 sess115.C2048 1 2 4 5 6 7 8 9 10 13 14 0.983 89.483 sess115.C1024 15 16 18 19 20 21 22 23 24 + 0.333 30.333 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) 0234+285 61.5 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