COVER INFORMATION Station: SHANGHAI (Code Sh ) Experiment: Arp220 OH-Megamaser Exp. Code: EB022 Schedule Version: 1.00 Processed by SCHED version: Release of 02 July 2002 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: SCHEDULE USE MODIFIED EB022stations.dat FILE AZIMUTH LIMITS FOR EF CHANGED, E-MAIL FROM D. GRAHAM 16.01.2003 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) ---------------------------------------------------------------------------------------- --- Sat 24 May 2003 Day 144 --- 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 18 00 00 ARP220 18 12 30 54.4 267.5 2.6 68.9 0 1 1 0 18 00 00 18 05 00 --- 18 17 31 53.3 268.2 2.7 68.9 300 F 1 2000 18 05 00 ARP220 18 17 31 53.3 268.2 2.7 68.9 -2 1 1 2000 18 05 00 18 10 00 --- 18 22 31 52.3 268.9 2.8 69.0 298 F 1 4000 18 10 00 J1516+1932 18 22 31 46.9 265.8 3.1 65.0 -20 1 1 4000 18 10 00 18 16 00 =1514+197 18 28 32 45.6 266.7 3.2 65.1 340 F 1 6400 18 16 00 ARP220 18 28 32 51.0 269.7 2.9 69.0 -20 1 1 6400 18 16 00 18 20 00 --- 18 32 33 50.1 270.2 3.0 69.0 220 F 1 8000 18 20 00 ARP220 18 32 33 50.1 270.2 3.0 69.0 -2 1 1 8000 18 20 00 18 32 00 --- 18 44 35 47.5 271.7 3.2 68.9 718 F 1 12800 18 32 00 ARP220 18 44 35 47.5 271.7 3.2 68.9 -2 1 1 12800 18 32 00 18 44 00 --- 18 56 37 45.0 273.2 3.4 68.8 718 F 1 17600 18 45 20 J1613+3412 18 57 57 55.5 286.3 2.7 83.5 43 1 2 17600 18 45 20 18 52 20 =1611+343 19 04 58 54.1 286.6 2.9 82.8 420 R 1 14800 18 53 40 ARP220 19 06 19 42.9 274.3 3.5 68.6 41 1 2 14800 18 53 40 19 02 40 --- 19 15 20 41.0 275.3 3.7 68.4 540 R 1 11200 19 04 00 J1516+1932 19 16 40 35.3 272.9 4.0 65.1 59 1 2 11200 19 04 00 19 07 00 =1514+197 19 19 41 34.6 273.3 4.0 65.1 180 R 1 10000 19 08 20 ARP220 19 21 01 39.8 276.0 3.8 68.2 61 1 2 10000 19 08 20 19 21 20 --- 19 34 03 37.0 277.4 4.0 67.8 780 R 1 4800 19 22 40 ARP220 19 35 23 36.7 277.5 4.0 67.8 77 1 2 4800 19 22 40 19 34 40 --- 19 47 25 34.2 278.8 4.2 67.3 720 R 1 0 19 36 00 ARP220 19 48 45 33.9 279.0 4.2 67.3 77 1 3 0 19 36 00 19 51 00 --- 20 03 48 30.7 280.6 4.5 66.6 900 F 1 6000 19 52 20 J1613+3412 20 05 08 41.9 289.9 3.9 76.7 41 1 3 6000 19 52 20 19 59 20 =1611+343 20 12 09 40.5 290.4 4.0 76.0 420 F 1 8800 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 24 May 2003 Day 144 --- 20 00 40 ARP220 20 13 30 28.7 281.6 4.6 66.2 39 1 3 8800 20 00 40 20 12 40 --- 20 25 32 26.1 282.9 4.8 65.5 720 F 1 13600 20 14 00 ARP220 20 26 52 25.9 283.0 4.9 65.5 77 1 3 13600 20 14 00 20 24 00 --- 20 36 53 23.8 284.1 5.0 64.9 600 F 1 17600 20 27 00 OQ208 20 39 54 8.0 298.5 6.5 58.9 125 1 4 17600 20 27 00 20 33 00 --- 20 45 55 6.9 299.2 6.6 58.2 360 R 1 15200 20 36 00 OQ208 20 48 55 6.3 299.5 6.7 57.9 176 1 4 15200 20 36 00 20 42 00 --- 20 54 56 5.2 300.3 6.8 57.3 360 R 1 12800 20 54 00 ARP220 21 06 58 17.6 287.3 5.5 63.1 677 1 4 12800 20 54 00 21 03 00 --- 21 16 00 15.7 288.3 5.7 62.4 540 R 1 9200 21 06 00 J1613+3412 21 19 00 27.3 295.3 5.1 69.4 140 1 4 9200 21 06 00 21 13 00 =1611+343 21 26 01 25.9 295.9 5.2 68.6 420 R 1 6400 21 16 00 ARP220 21 29 02 13.1 289.7 5.9 61.5 135 1 4 6400 21 16 00 21 23 00 --- 21 36 03 11.7 290.5 6.0 61.0 420 R 1 3600 21 24 20 J1516+1932 21 37 23 5.8 289.3 6.3 59.0 58 1 4 3600 21 24 20 21 27 20 =1514+197 21 40 24 5.2 289.7 6.4 58.8 180 R 1 2400 21 28 40 ARP220 21 41 44 10.6 291.2 6.1 60.5 60 1 5 2400 21 28 40 21 38 40 --- 21 51 46 8.6 292.3 6.3 59.7 600 F 1 6400 21 40 00 ARP220 21 53 06 8.3 292.5 6.3 59.6 77 1 5 6400 21 40 00 21 50 00 --- 22 03 07 6.3 293.7 6.5 58.8 600 F 1 10400 22 02 40 J1613+3412 22 15 50 16.5 300.4 6.0 63.3 724 1 5 10400 22 02 40 22 09 40 =1611+343 22 22 51 15.2 301.1 6.2 62.5 420 F 1 13200 22 49 40 J1613+3412 23 02 57 8.0 305.3 6.8 57.7 2374 1 5 13200 22 49 40 22 56 40 =1611+343 23 09 58 6.8 306.1 6.9 56.8 420 F 1 16000 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/Sched2002Jul02a/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 06.767094 23 40 07.99276 * 23 30 11.56400 23 29 29.43400 From catalog imbedded in main SCHED input file. J1407+2827 14 04 45.615151 * 14 07 00.394410 14 07 10.115626 1404+286 28 41 29.23495 * 28 27 14.68998 28 26 21.57706 J1407+28 /users/Sofware/Sched2002Jul02a/catalogs/sources.vlba * OQ208 ICRF - Ext.1 Source - 1998 IERS Annual Report * J1516+1932 15 14 40.985870 * 15 16 56.796192 15 17 06.605717 1514+197 19 43 10.94230 * 19 32 12.99187 19 31 27.45336 J1516+19 /users/Sofware/Sched2002Jul02a/catalogs/sources.vlba ICRF - Ext.1 Source - 1998 IERS Annual Report * J1613+3412 16 11 47.914256 * 16 13 41.064247 16 13 49.741323 1611+343 34 20 19.83407 * 34 12 47.90909 34 12 13.36071 J1613+34 /users/Sofware/Sched2002Jul02a/catalogs/sources.vlba 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 135.1 OQ208 123.1 J1516+1932 138.0 J1613+3412 124.9 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