COVER INFORMATION Station: SHANGHAI (Code Sh ) Experiment: Arp220 OH-Megamaser Exp. Code: EB022 Schedule Version: 2.00 Processed by SCHED version: 16 Oct. 2001 PI: Willem Baan Address: ASTRON, Radiosterrenwacht Dwingeloo Postbus 2, 7990 AA Dwingeloo The Netherlands Phone: +31 521 595 128 EMAIL: willem@nfra.nl Fax: +31 521 597 332 Phone during observation: +31 528 595 128 Observing mode: VLBA/MKIV Notes: --> OBSERVATION STARTS LATER >> 23:30 UT << <-- --> PLEASE MAKE SURE PHASE-CAL IS OFF. <-- Schedule for SHANGHAI (Code Sh ) Page 2 Arp220 OH-Megamaser 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 22 Feb 2002 Day 53 --- Next scan frequencies: 1632.99 1632.99 1640.99 1640.99 Next BBC frequencies: 567.01 567.01 559.01 559.01 Next scan bandwidths: 8.00 8.00 8.00 8.00 23 30 00 ARP220 17 45 35 60.1 263.4 2.2 68.0 0 1 1 0 23 30 00 23 35 00 --- 17 50 35 59.1 264.2 2.3 68.3 300 F 1 2000 23 35 00 ARP220 17 50 35 59.1 264.2 2.3 68.3 -2 1 1 2000 23 35 00 23 40 00 --- 17 55 36 58.0 265.0 2.3 68.5 298 F 1 4000 23 40 00 J1516+1932 17 55 36 52.6 261.6 2.6 64.0 -20 1 1 4000 23 40 00 23 46 00 =1514+197 18 01 37 51.3 262.6 2.7 64.3 340 F 1 6400 23 46 00 ARP220 18 01 37 56.7 266.0 2.4 68.6 -20 1 1 6400 23 46 00 23 50 00 --- 18 05 38 55.9 266.6 2.5 68.7 220 F 1 8000 --- Start: Fri 22 Feb 2002 Day 53 -- Stop: Sat 23 Feb 2002 Day 54 --- 23 50 00 ARP220 18 05 38 55.9 266.6 2.5 68.7 -2 1 1 8000 23 50 00 00 02 00 --- 18 17 40 53.3 268.3 2.7 68.9 718 F 1 12800 00 02 00 ARP220 18 17 40 53.3 268.3 2.7 68.9 -2 1 1 12800 00 02 00 00 14 00 --- 18 29 42 50.7 269.9 2.9 69.0 718 F 1 17600 00 15 20 J1613+3412 18 31 02 61.1 285.4 2.3 86.5 43 1 2 17600 00 15 20 00 22 20 =1611+343 18 38 03 59.6 285.6 2.4 85.7 420 R 1 14800 00 23 40 ARP220 18 39 23 48.6 271.1 3.1 69.0 41 1 2 14800 00 23 40 00 32 40 --- 18 48 25 46.7 272.2 3.2 68.9 540 R 1 11200 00 34 00 J1516+1932 18 49 45 41.0 269.6 3.5 65.3 59 1 2 11200 00 34 00 00 37 00 =1514+197 18 52 46 40.4 270.0 3.6 65.3 180 R 1 10000 00 38 20 ARP220 18 54 06 45.5 272.9 3.3 68.8 61 1 2 10000 00 38 20 00 51 20 --- 19 07 08 42.7 274.4 3.5 68.6 780 R 1 4800 00 52 40 ARP220 19 08 28 42.4 274.6 3.6 68.5 77 1 2 4800 00 52 40 01 04 40 --- 19 20 30 39.9 275.9 3.8 68.2 720 R 1 0 01 06 00 ARP220 19 21 50 39.6 276.1 3.8 68.2 77 1 3 0 01 06 00 01 21 00 --- 19 36 53 36.4 277.7 4.0 67.7 900 F 1 6000 Schedule for SHANGHAI (Code Sh ) Page 3 Arp220 OH-Megamaser 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) ---------------------------------------------------------------------------------------- --- Sat 23 Feb 2002 Day 54 --- 01 22 20 J1613+3412 19 38 13 47.3 288.3 3.4 79.4 42 1 3 6000 01 22 20 01 29 20 =1611+343 19 45 14 45.9 288.7 3.5 78.7 420 F 1 8800 01 30 40 ARP220 19 46 34 34.3 278.7 4.2 67.3 39 1 3 8800 01 30 40 01 42 40 --- 19 58 36 31.8 280.0 4.4 66.8 720 F 1 13600 01 44 00 ARP220 19 59 57 31.5 280.2 4.4 66.8 77 1 3 13600 01 44 00 01 54 00 --- 20 09 58 29.4 281.2 4.6 66.3 600 F 1 17600 01 57 00 OQ208 20 12 59 13.1 295.5 6.1 61.5 124 1 4 17600 01 57 00 02 09 00 --- 20 25 01 10.8 296.8 6.3 60.3 720 R 1 12800 02 12 00 OQ208 20 28 01 10.2 297.2 6.3 60.0 176 1 4 12800 02 12 00 02 24 00 --- 20 40 03 7.9 298.5 6.5 58.8 720 R 1 8000 02 27 00 ARP220 20 43 04 22.5 284.7 5.1 64.6 130 1 4 8000 02 27 00 02 33 00 --- 20 49 05 21.2 285.4 5.2 64.2 360 R 1 5600 02 36 00 J1613+3412 20 52 05 32.5 293.2 4.6 72.1 140 1 4 5600 02 36 00 02 43 00 =1611+343 20 59 06 31.1 293.7 4.8 71.4 420 R 1 2800 02 46 00 ARP220 21 02 07 18.6 286.8 5.5 63.4 136 1 4 2800 02 46 00 02 52 00 --- 21 08 08 17.3 287.4 5.6 63.0 360 R 1 400 02 53 20 J1516+1932 21 09 28 11.5 286.0 5.9 60.8 59 1 5 400 02 53 20 02 56 20 =1514+197 21 12 29 10.9 286.4 5.9 60.7 180 F 1 1600 02 57 40 ARP220 21 13 49 16.2 288.0 5.6 62.6 60 1 5 1600 02 57 40 03 08 40 --- 21 24 51 13.9 289.3 5.8 61.8 660 F 1 6000 03 10 00 ARP220 21 26 11 13.7 289.4 5.9 61.7 77 1 5 6000 03 10 00 03 20 00 --- 21 36 12 11.6 290.5 6.0 61.0 600 F 1 10000 03 21 20 ARP220 21 37 33 11.4 290.7 6.0 60.9 77 1 5 10000 03 21 20 03 31 20 --- 21 47 34 9.4 291.9 6.2 60.1 600 F 1 14000 03 32 40 ARP220 21 48 55 9.1 292.0 6.2 60.0 77 1 6 14000 03 32 40 03 42 40 --- 21 58 56 7.1 293.2 6.4 59.1 600 R 1 10000 04 11 00 J1613+3412 22 27 21 14.4 301.5 6.2 61.9 1674 1 6 10000 04 11 00 04 18 00 =1611+343 22 34 22 13.1 302.2 6.3 61.1 420 R 1 7200 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: Arp220.set Matches group sh18cm in /users/Sofware/Sched/catalogs/freq.dat Huang Xinyong 170300, dual pol but narrow(?) Setup group: 5 Station: SHANGHAI Total bit rate: 128 Format: MKIV1:4 Bits per sample: 2 Sample rate: 16.000 Number of channels: 4 Passes/head pos: 1 Speedup factor: 2.00 Tape speeds: Low density - 135.000 ips, High density - 80.00 ips Time per pass for 17600 ft, High density tapes is: 00:44:00 1st LO= 2200.00 2200.00 2200.00 2200.00 Net SB= U U U U Pol. = RCP LCP RCP LCP BBC = 1 2 3 4 BBC SB= L L L L IF = C A C A The following frequency sets based on this setup were used. Frequency Set: 5 Setup file default. Used pcal sets: 1 LO sum= 1632.99 1632.99 1640.99 1640.99 BBC fr= 567.01 567.01 559.01 559.01 Bandwd= 8.000 8.000 8.000 8.000 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 -- Arp220 OH-Megamaser 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). Source Source position (RA/Dec) (B1950) (J2000) (Date) * ARP220 15 32 46.880196 * 15 34 57.224670 15 35 02.198668 23 40 07.99276 * 23 30 11.56400 23 29 34.39141 From catalog imbedded in main SCHED input file. J1407+2827 14 04 45.615151 * 14 07 00.394410 14 07 06.084871 1404+286 28 41 29.23495 * 28 27 14.68998 28 26 28.33176 J1407+28 /users/Sofware/Sched/catalogs/sources.vlba * OQ208 ICRF - Ext.1 Source - 1998 IERS Annual Report OQ208 * J1516+1932 15 14 40.985870 * 15 16 56.796192 15 17 02.068673 1514+197 19 43 10.94230 * 19 32 12.99187 19 31 34.76952 1514+197 /users/Sofware/Sched/catalogs/sources.vlba J1516+19 ICRF - Ext.1 Source - 1998 IERS Annual Report * J1613+3412 16 11 47.914256 * 16 13 41.064247 16 13 45.171419 1611+343 34 20 19.83407 * 34 12 47.90909 34 12 13.33106 1611+343 /users/Sofware/Sched/catalogs/sources.vlba J1613+34 ICRF - Ext.1 Source - 1998 IERS Annual Report 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) ARP220 105.3 OQ208 124.9 J1516+1932 109.2 J1613+3412 97.9 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