COVER INFORMATION Station: SHANGHAI (Code Sh ) 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 SHANGHAI (Code Sh ) 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: 4756.00 4756.00 4756.00 4756.00 4820.00 4820.00 4820.00 4820.00 4884.00 4884.00 4884.00 4884.00 4948.00 4948.00 4948.00 4948.00 Next BBC frequencies: 556.00 556.00 556.00 556.00 620.00 620.00 620.00 620.00 684.00 684.00 684.00 684.00 748.00 748.00 748.00 748.00 Next scan bandwidths: 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 12 00 00 0234+285 07 00 25 34.2 -74.2 4.4 70.2 0 0 12 00 00 12 07 00 --- 07 07 26 32.7 -73.6 4.5 69.7 420 108 12 00 01 12 08 00 0234+285 07 08 26 32.5 -73.5 4.5 69.6 58 108 12 08 00 12 15 00 --- 07 15 27 31.1 -72.9 4.6 69.1 420 215 12 08 01 12 23 00 0234+285 07 23 29 29.4 -72.1 4.7 68.5 478 215 12 23 00 12 30 00 --- 07 30 30 28.0 -71.5 4.9 68.0 420 323 12 23 01 12 31 00 0234+285 07 31 30 27.8 -71.4 4.9 67.9 58 323 12 31 00 12 38 00 --- 07 38 31 26.4 -70.7 5.0 67.4 420 431 12 31 01 12 39 00 0234+285 07 39 31 26.2 -70.6 5.0 67.3 58 431 12 39 00 12 45 00 --- 07 45 32 25.0 -70.1 5.1 66.8 360 523 12 39 01 12 53 00 0234+285 07 53 34 23.3 -69.3 5.2 66.1 478 523 12 53 00 13 00 00 --- 08 00 35 21.9 -68.6 5.4 65.6 420 631 12 53 01 13 01 00 0234+285 08 01 35 21.7 -68.5 5.4 65.5 58 631 13 01 00 13 08 00 --- 08 08 36 20.4 -67.8 5.5 64.9 420 738 13 01 01 13 09 00 0234+285 08 09 36 20.2 -67.7 5.5 64.8 58 738 13 09 00 13 15 00 --- 08 15 37 19.0 -67.1 5.6 64.3 360 831 13 09 01 13 23 00 0234+285 08 23 39 17.4 -66.3 5.7 63.5 478 831 13 23 00 13 28 00 --- 08 28 39 16.4 -65.8 5.8 63.1 300 908 13 23 01 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: 604.00 604.00 604.00 604.00 636.00 636.00 636.00 636.00 668.00 668.00 668.00 668.00 700.00 700.00 700.00 700.00 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 13 31 00 0234+285 08 31 40 15.8 -65.5 5.9 62.8 178 908 13 31 00 13 38 00 --- 08 38 41 14.5 -64.7 6.0 62.2 420 962 13 31 25 13 39 00 0234+285 08 39 41 14.3 -64.6 6.0 62.1 58 962 13 39 00 13 45 00 --- 08 45 42 13.1 -64.0 6.1 61.5 360 1008 13 39 01 Schedule for SHANGHAI (Code Sh ) Page 3 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 --- 13 53 00 0234+285 08 53 43 11.6 -63.1 6.2 60.7 478 1008 13 53 00 14 00 00 --- 09 00 45 10.2 -62.3 6.4 60.0 420 1062 13 53 01 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: 11 Station: SHANGHAI Total bit rate: 2048 Format: MARK5B Bits per sample: 2 Sample rate: 64.000 Number of channels: 16 DBE type: Speedup factor: 1.00 Disk used to record data. 1st LO= 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 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 = 1 5 1 5 2 6 2 6 3 7 3 7 4 8 4 8 BBC SB= L L U U L L U U L L U U L L U U IF = A B A B A B A B A B A B A B A B The following frequency sets based on these setups were used. Frequency Set: 9 Setup file default. Used with PCAL = off LO sum= 4756.00 4756.00 4756.00 4756.00 4820.00 4820.00 4820.00 4820.00 4884.00 4884.00 4884.00 4884.00 4948.00 4948.00 4948.00 4948.00 BBC fr= 556.00 556.00 556.00 556.00 620.00 620.00 620.00 620.00 684.00 684.00 684.00 684.00 748.00 748.00 748.00 748.00 Bandwd= 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 32.00 Matching frequency sets: 9 Track assignments are: track1= 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32 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: 25 Station: SHANGHAI Total bit rate: 1024 Format: MARK5B Bits per sample: 2 Sample rate: 32.000 Number of channels: 16 DBE type: Speedup factor: 1.00 Disk used to record data. 1st LO= 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 4200.00 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 = 1 5 1 5 2 6 2 6 3 7 3 7 4 8 4 8 BBC SB= L L U U L L U U L L U U L L U U IF = A B A B A B A B A B A B A B A B The following frequency sets based on these setups were used. Frequency Set: 23 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= 604.00 604.00 604.00 604.00 636.00 636.00 636.00 636.00 668.00 668.00 668.00 668.00 700.00 700.00 700.00 700.00 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: 23 Track assignments are: track1= 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32 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