COVER INFORMATION Station: VLBA_MK (Code Mk ) Experiment: Cassini Test Exp. Code: GG057A Schedule Version: 5.00 Processed by SCHED version: Trial release of 30 July 2004 PI: Leonid Gurvits Address: JIVE Postbus 2 7990 AA Dwingeloo the Netherlands Phone: +31 521 596 512 (or 540) EMAIL: lgurvits@jive.nl Fax: +31 521 596 539 Phone during observation: +1 304 456 2341 Observing mode: Cassini spacecraft at X and Huygens Field at S Notes: Phase-referencing of Cassini at X band and low-S band sensitivity tests, at 512Mbps Schedule for VLBA_MK (Code Mk ) Page 2 Cassini Test 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). ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) ---------------------------------------------------------------------------------------- --- Fri 27 Aug 2004 Day 240 --- Next scan frequencies: 2023.99 2023.99 2039.99 2039.99 Next BBC frequencies: 876.01 876.01 860.01 860.01 Next scan bandwidths: 16.00 16.00 16.00 16.00 12 30 00 3C454.3 00 32 30 66.4 265.2 1.6 77.5 0 1 1 0 12 30 00 12 41 00 --- 00 43 32 63.8 266.5 1.8 77.9 660 F 1 8800 12 42 00 3C454.3 00 44 32 63.5 266.6 1.8 77.9 54 1 1 8800 12 42 00 12 53 00 --- 00 55 34 61.0 267.8 2.0 78.2 660 F 1 17600 12 54 00 3C454.3 00 56 34 60.7 267.9 2.0 78.2 54 1 2 17600 12 54 00 13 05 00 --- 01 07 36 58.1 268.9 2.2 78.4 660 R 1 8800 13 09 00 3C454.3 01 11 37 57.2 269.3 2.3 78.4 232 1 2 8800 13 09 00 13 20 00 --- 01 22 38 54.6 270.3 2.5 78.4 660 R 1 0 13 21 00 3C454.3 01 23 39 54.4 270.3 2.5 78.4 54 1 3 0 13 21 00 13 32 00 --- 01 34 40 51.8 271.2 2.7 78.4 660 F 1 8800 13 33 00 3C454.3 01 35 41 51.5 271.3 2.7 78.3 54 1 3 8800 13 33 00 13 44 00 --- 01 46 42 48.9 272.1 2.9 78.2 660 F 1 17600 13 45 00 3C454.3 01 47 43 48.7 272.2 2.9 78.2 54 1 4 17600 13 45 00 13 56 00 --- 01 58 44 46.1 273.0 3.1 78.0 660 R 1 8800 Next scan frequencies: 2234.49 2234.49 2250.49 2250.49 Next BBC frequencies: 665.51 665.51 649.51 649.51 13 57 00 3C454.3 01 59 45 45.9 273.1 3.1 78.0 54 1 4 8800 13 57 00 14 08 00 --- 02 10 46 43.3 273.9 3.3 77.8 660 R 1 0 14 09 00 J0019+2021 02 11 47 63.8 276.1 1.9 86.4 13 1 5 0 14 09 00 14 20 00 =0017+200 02 22 48 61.2 276.5 2.0 85.7 660 F 1 8800 14 22 00 J2358+1955 02 24 49 55.8 276.6 2.4 83.9 103 1 5 8800 14 22 00 14 33 00 =2356+196 02 35 50 53.2 277.1 2.6 83.3 660 F 1 17600 14 34 00 J0019+2021 02 36 51 57.9 277.1 2.3 85.0 45 1 6 17600 14 34 00 14 45 00 =0017+200 02 47 52 55.3 277.5 2.5 84.4 660 R 1 8800 14 47 00 J2358+1955 02 49 53 49.9 277.8 2.8 82.6 103 1 6 8800 14 47 00 14 58 00 =2356+196 03 00 55 47.4 278.3 3.0 82.1 660 R 1 0 Schedule for VLBA_MK (Code Mk ) Page 3 Cassini Test 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). ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Tapes TPStart Stop UT LST EL AZ HA UP ParA Dwell (see above) ---------------------------------------------------------------------------------------- --- Fri 27 Aug 2004 Day 240 --- 14 59 00 J0019+2021 03 01 55 52.1 278.1 2.7 83.6 45 1 7 0 14 59 00 15 10 00 =0017+200 03 12 57 49.5 278.5 2.9 83.0 660 F 1 8800 15 12 00 J2358+1955 03 14 57 44.1 279.0 3.3 81.4 103 1 7 8800 15 12 00 15 23 00 =2356+196 03 25 59 41.5 279.5 3.4 80.8 660 F 1 17600 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: 1b.set Matches group v13cm_1 in /home/filehost/cwalker/sched_2004aug04/catalogs/freq.dat LA,NL only 2200-2400 Setup group: 2 Station: VLBA_MK Total bit rate: 256 Format: VLBA1:4 Bits per sample: 2 Sample rate: 32.000 Number of channels: 4 Passes/head pos: 1 Speedup factor: 1.00 Tape speeds: Low density - 266.660 ips, High density - 160.00 ips Time per pass for 17600 ft, High density tapes is: 00:22:00 1st LO= 2900.00 2900.00 2900.00 2900.00 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= 13cm omit 13cm omit VLBA Synth= 15.4 2.9 15.4 The following frequency sets based on this setup were used. Frequency Set: 2 Setup file default. Used pcal sets: 1 LO sum= 2023.99 2023.99 2039.99 2039.99 BBC fr= 876.01 876.01 860.01 860.01 Bandwd= 16.000 16.000 16.000 16.000 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 Setup file: 2b.set Matches group v13cm_1 in /home/filehost/cwalker/sched_2004aug04/catalogs/freq.dat LA,NL only 2200-2400 Setup group: 4 Station: VLBA_MK Total bit rate: 256 Format: VLBA1:4 Bits per sample: 2 Sample rate: 32.000 Number of channels: 4 Passes/head pos: 1 Speedup factor: 1.00 Tape speeds: Low density - 266.660 ips, High density - 160.00 ips Time per pass for 17600 ft, High density tapes is: 00:22:00 1st LO= 2900.00 2900.00 2900.00 2900.00 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= 13cm omit 13cm omit VLBA Synth= 15.4 2.9 15.4 The following frequency sets based on this setup were used. Frequency Set: 4 Setup file default. Used pcal sets: 1 LO sum= 2234.49 2234.49 2250.49 2250.49 BBC fr= 665.51 665.51 649.51 649.51 Bandwd= 16.000 16.000 16.000 16.000 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 SOURCE LIST -- Cassini Test 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) * J0019+2021 00 17 02.119560 * 00 19 37.854504 00 19 52.789777 0017+200 20 05 06.80765 * 20 21 45.64461 20 23 19.30215 /home/filehost/cwalker/sched_2004aug04/catalogs/sources.vlba VLBA Calib. Survey - ICRF Frame - reduced by GSFC group - Aug 2001 0.550 scan hours, 0.550 baseline hours above horizon. J2253+1608 22 51 29.519733 * 22 53 57.747932 22 54 12.192851 2251+158 15 52 54.34806 * 16 08 53.56089 16 10 23.66762 * 3C454.3 /home/filehost/cwalker/sched_2004aug04/catalogs/sources.vlba J2253+16 ICRF - Ext.1 Source - 1998 IERS Annual Report 1.467 scan hours, 1.467 baseline hours above horizon. * J2358+1955 23 56 12.578074 * 23 58 46.085140 23 59 00.877924 2356+196 19 38 38.31656 * 19 55 20.30211 19 56 54.18838 /home/filehost/cwalker/sched_2004aug04/catalogs/sources.vlba VLBA Calib. Survey - ICRF Frame - reduced by GSFC group - Aug 2001 0.550 scan hours, 0.550 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) J0019+2021 138.8 3C454.3 153.1 J2358+1955 142.4 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