COVER INFORMATION Station: VLBA_FD (Code Fd ) Experiment: Mark5 test, including 512 Mbps mode Exp. Code: tf028k Schedule Version: 1.00 Processed by SCHED version: Trial release of 30 July 2004 PI: Walter Brisken Address: National Radio Astronomy Observatory P. O. Box O Socorro, New Mexico, 87801 U.S.A. Phone: 505 835 7133 EMAIL: wbrisken@nrao.edu Fax: 505 835 7027 Phone during observation: 505 772 2580 Observing mode: Notes: No correlation needed. 5 stations, disc only Schedule for VLBA_FD (Code Fd ) Page 2 Mark5 test, including 512 Mbps mode UP: D => Below limits; H => Below horizon mask. blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Tapes: Drive, Index, Start footage / Direction, Head Group, End footage. TPStart: Tape motion start time. Frequencies are LO sum (band edge). Automatic tape allocation specified. Tape positions are just estimates. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) ---------------------------------------------------------------------------------------- --- Thu 26 Aug 2004 Day 239 --- Next scan frequencies: 1409.99 1409.99 1503.99 1503.99 1589.99 1589.99 1679.99 1679.99 Next BBC frequencies: 990.01 990.01 896.01 896.01 810.01 810.01 720.01 720.01 Next scan bandwidths: 8.00 8.00 8.00 8.00 8.00 8.00 8.00 8.00 20 00 00 J2327+8012 11 25 50 20.9 -0.1 12.0 0.3 0 1 1 0 19 59 50 20 05 00 =2325+799 11 30 51 20.9 0.2-11.9 -0.8 300 F 1 0 20 05 00 J0017+8135 11 30 51 22.4 -1.8 11.2 10.8 -9 1 1 0 20 05 00 20 10 00 =0014+813 11 35 52 22.4 -1.6 11.3 9.7 291 F 1 0 Next scan frequencies: 1542.49 1542.49 1542.49 1542.49 1574.49 1574.49 1574.49 1574.49 1606.49 1606.49 1606.49 1606.49 1638.49 1638.49 1638.49 1638.49 Next BBC frequencies: 857.51 857.51 857.51 857.51 825.51 825.51 825.51 825.51 793.51 793.51 793.51 793.51 761.51 761.51 761.51 761.51 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 20 10 00 J2327+8012 11 35 52 20.9 0.4-11.9 -2.0 -9 1 1 0 20 10 00 20 15 00 =2325+799 11 40 53 20.9 0.6-11.8 -3.1 291 F 1 0 20 15 00 J0017+8135 11 40 53 22.3 -1.4 11.4 8.5 -9 1 1 0 20 15 00 20 20 00 =0014+813 11 45 53 22.3 -1.2 11.5 7.3 291 F 1 0 Next scan frequencies: 1409.99 1409.99 1589.99 1589.99 Next BBC frequencies: 990.01 990.01 810.01 810.01 Next scan bandwidths: 16.00 16.00 16.00 16.00 20 20 00 J2327+8012 11 45 53 20.9 0.8-11.7 -4.3 -9 1 1 0 20 20 00 20 25 00 =2325+799 11 50 54 20.9 1.1-11.6 -5.4 291 F 1 0 20 25 00 J0017+8135 11 50 54 22.3 -1.0 11.6 6.2 -9 1 1 0 20 25 00 20 30 00 =0014+813 11 55 55 22.3 -0.8 11.6 5.0 291 F 1 0 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: mk5.20.256 Matches group v20cm_2 in /users/cwalker/sched_2004aug04/catalogs/freq.dat FD filtered above 1760. SC filtered above 1740. Setup group: 2 Station: VLBA Total bit rate: 256 Format: VLBA1:4 Bits per sample: 2 Sample rate: 16.000 Number of channels: 8 Passes/head pos: 1 Speedup factor: 2.00 1st LO= 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 Net SB= U U U U U U U U Pol. = RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 2 3 4 5 6 7 8 BBC SB= L L L L L L L L IF = A C A C A C A C VLBA FE= 20cm omit 20cm omit VLBA Synth= 15.4 2.4 15.4 The following frequency sets based on this setup were used. Frequency Set: 1 Setup file default. Used pcal sets: 1 LO sum= 1409.99 1409.99 1503.99 1503.99 1589.99 1589.99 1679.99 1679.99 BBC fr= 990.01 990.01 896.01 896.01 810.01 810.01 720.01 720.01 Bandwd= 8.000 8.000 8.000 8.000 8.000 8.000 8.000 8.000 The following pulse cal sets were used with this setup: Pulse cal detection set: 1 PCAL = 1MHZ PCALXB1= S1 S3 S5 S7 S1 S3 S5 S7 PCALXB2= S2 S4 S6 S8 S2 S4 S6 S8 PCALFR1= 10 10 10 10 6010 6010 6010 6010 PCALFR2= 10 10 10 10 6010 6010 6010 6010 Track assignments are: track1= 2, 18, 3, 19, 66, 82, 67, 83 barrel=roll_auto Setup file: mk5.20.512 Matches group v20cm_2 in /users/cwalker/sched_2004aug04/catalogs/freq.dat FD filtered above 1760. SC filtered above 1740. Setup group: 3 Station: VLBA Total bit rate: 512 Format: VLBA1:4 Bits per sample: 1 Sample rate: 32.000 Number of channels: 16 Passes/head pos: 1 Speedup factor: 1.00 1st LO= 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 2400.00 Net SB= L L U U L L U U L L U U L L U U Pol. = RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 2 1 2 3 4 3 4 5 6 5 6 7 8 7 8 BBC SB= U U L L U U L L U U L L U U L L IF = A C A C A C A C A C A C A C A C VLBA FE= 20cm omit 20cm omit VLBA Synth= 15.4 2.4 15.4 The following frequency sets based on this setup were used. Frequency Set: 2 Setup file default. Used pcal sets: 2 LO sum= 1542.49 1542.49 1542.49 1542.49 1574.49 1574.49 1574.49 1574.49 1606.49 1606.49 1606.49 1606.49 1638.49 1638.49 1638.49 1638.49 BBC fr= 857.51 857.51 857.51 857.51 825.51 825.51 825.51 825.51 793.51 793.51 793.51 793.51 761.51 761.51 761.51 761.51 Bandwd= 16.000 16.000 16.000 16.000 16.000 16.000 16.000 16.000 16.000 16.000 16.000 16.000 16.000 16.000 16.000 16.000 The following pulse cal sets were used with this setup: Pulse cal detection set: 2 PCAL = 1MHZ PCALXB1= S1 S3 S5 S7 S9 S11 S13 S15 PCALXB2= S2 S4 S6 S8 S10 S12 S14 S16 PCALFR1= 490 510 490 510 490 510 490 510 PCALFR2= 490 510 490 510 490 510 490 510 Track assignments are: track1= 2, 10, 18, 26, 3, 11, 19, 27, 66, 74, 82, 90, 67, 75, 83, 91 barrel=roll_auto Setup file: mk5.20.128 Matches group v20cm_2 in /users/cwalker/sched_2004aug04/catalogs/freq.dat FD filtered above 1760. SC filtered above 1740. Setup group: 1 Station: VLBA Total bit rate: 128 Format: VLBA1:4 Bits per sample: 1 Sample rate: 32.000 Number of channels: 4 Passes/head pos: 1 Speedup factor: 1.00 1st LO= 2400.00 2400.00 2400.00 2400.00 Net SB= U U U U Pol. = RCP LCP RCP LCP BBC = 1 2 3 4 BBC SB= L L L L IF = A C A C VLBA FE= 20cm omit 20cm omit VLBA Synth= 15.4 2.4 15.4 The following frequency sets based on this setup were used. Frequency Set: 3 Setup file default. Used pcal sets: 3 LO sum= 1409.99 1409.99 1589.99 1589.99 BBC fr= 990.01 990.01 810.01 810.01 Bandwd= 16.000 16.000 16.000 16.000 The following pulse cal sets were used with this setup: Pulse cal detection set: 3 PCAL = 1MHZ PCALXB1= S1 S3 S1 S3 S1 S3 S1 S3 PCALXB2= S2 S4 S2 S4 S2 S4 S2 S4 PCALFR1= 10 10 13010 13010 0 0 1010 1010 PCALFR2= 10 10 13010 13010 0 0 1010 1010 Track assignments are: track1= 2, 10, 18, 26 barrel=roll_auto SOURCE LIST -- Mark5 test, including 512 Mbps mode 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) (B1950) (J2000) (Date) * J0017+8135 00 14 04.461908 * 00 17 08.474953 00 17 29.178295 0014+813 81 18 28.65797 * 81 35 08.13633 81 36 29.53190 J0017+81 /users/cwalker/sched_2004aug04/catalogs/sources.vlba ICRF - Ext.1 Source - 1998 IERS Annual Report 0.250 scan hours, 2.423 baseline hours above horizon. * J2327+8012 23 25 28.589042 * 23 27 06.422700 23 27 19.301103 2325+799 79 56 27.90495 * 80 12 58.90700 80 14 21.83822 /users/cwalker/sched_2004aug04/catalogs/sources.vlba JVAS - Wilkinson et al. 1998, mnras, 300, 790; S8.4GHz= 148 mJy 0.250 scan hours, 2.449 baseline hours above horizon. 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) J0017+8135 87.3 J2327+8012 89.3 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