COVER INFORMATION Station: VLBA_HN (Code Hn ) Experiment: H2O maser proper motions in low-mass YSOs Exp. Code: BM184E Schedule Version: 1.00 Processed by SCHED version: Release of 02 July 2002 PI: Luca Moscadelli Address: Osservatorio Astronomico di Cagliari Loc. Poggio dei Pini, Str. 54, I-09012, Capoterra, Cagliari, Italy Phone: +39 070 6754916 EMAIL: mosca@ca.astro.it (internet) Fax: +39 070 71180222 Phone during observation: Observing mode: 1.3cm VLBA setup Notes: This observation consists of four (4) different epochs, spaced by 40 days. USE THIS "KEY_IN" FILE FOR EACH EPOCH. This is a PHASE REF experiment, DO NOT INTERRUPT SCAN SEQUENCE SPECTRAL LINE observations: Make sure *** PHASE CAL is OFF*** Schedule for VLBA_HN (Code Hn ) Page 2 H2O maser proper motions in low-mass YSOs 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) ---------------------------------------------------------------------------------------- --- Fri 4 Apr 2003 Day 94 --- Next scan frequencies: 22228.78 22228.78 Next BBC frequencies: 728.78 728.78 Next scan bandwidths: 4.00 4.00 21 51 17 DA193 05 54 32 86.9 175.8 0.0 -4.0 0 1 1 0 21 51 17 21 54 16 --- 05 57 32 86.9 186.4 0.0 6.1 180 F 1 1197 21 56 23 ZCMA 05 59 39 33.6 161.0 -1.1 -14.1 14 1 2 1197 21 56 23 22 51 14 --- 06 54 39 35.5 177.2 -0.2 -2.1 3291 R 1 12063 22 51 14 DA193 06 54 39 78.5 259.2 1.0 69.5 -92 1 2 12063 22 51 14 22 54 13 --- 06 57 39 78.0 260.2 1.0 69.9 87 R 1 10867 22 56 05 ZCMA 06 59 31 35.5 178.7 -0.1 -1.0 21 1 1 10867 22 56 05 23 50 56 --- 07 54 31 34.3 195.1 0.8 11.2 3291 F 2 11073 23 52 56 DA193 07 56 31 67.2 272.5 2.0 72.2 48 1 1 11073 23 52 56 23 55 56 --- 07 59 31 66.7 272.9 2.1 72.2 180 F 2 12270 --- Start: Fri 4 Apr 2003 Day 94 -- Stop: Sat 5 Apr 2003 Day 95 --- 23 57 46 ZCMA 08 01 22 33.9 197.0 1.0 12.7 39 1 2 12270 23 57 46 00 52 37 --- 08 56 22 29.7 212.1 1.9 23.4 3291 R 2 990 00 54 33 DA193 08 58 19 56.0 280.6 3.0 69.5 58 1 1 990 00 54 33 00 57 33 --- 09 01 19 55.5 281.0 3.1 69.3 180 F 3 207 00 59 26 ZCMA 09 03 12 29.1 213.9 2.0 24.6 54 1 2 207 00 59 26 01 54 17 --- 09 58 12 22.5 227.0 2.9 33.1 3291 R 3 13053 01 56 17 J0825+0309 10 00 12 45.0 214.4 1.6 24.5 69 1 2 13053 01 56 17 01 59 16 =0823+033 10 03 12 44.7 215.3 1.6 25.1 180 R 3 11857 02 00 13 ZCMA 10 04 09 21.7 228.3 3.0 33.9 4 1 1 11857 02 00 13 02 55 04 --- 10 59 09 13.6 239.6 3.9 40.1 3291 F 4 10083 02 55 58 J0825+0309 11 00 04 37.5 231.6 2.6 35.1 1 1 1 10083 02 55 58 02 58 58 =0823+033 11 03 04 37.1 232.4 2.6 35.5 180 F 4 11280 02 59 49 ZCMA 11 03 55 12.8 240.5 4.0 40.6 -4 1 2 11280 02 59 49 03 54 40 --- 11 58 55 3.7 250.5 4.9 H 44.8 0 R 4 1980 Schedule for VLBA_HN (Code Hn ) Page 3 H2O maser proper motions in low-mass YSOs 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) ---------------------------------------------------------------------------------------- --- Sat 5 Apr 2003 Day 95 --- 03 56 42 J0927+3902 12 00 58 61.0 275.5 2.6 69.7 2 1 2 1980 03 56 42 03 59 42 =0923+392 12 03 58 60.4 275.9 2.6 69.6 180 R 4 783 04 01 46 ZCMA 12 06 02 2.4 251.7 5.0 H 45.2 2 1 3 783 04 01 46 04 47 38 --- 12 52 02 -5.7 259.5 5.8 D 47.3 0 F 1 17566 04 49 43 J0927+3902 12 54 07 51.4 282.3 3.4 67.0 21 1 4 17566 04 49 43 04 52 43 =0923+392 12 57 07 50.8 282.7 3.5 66.8 180 R 1 16370 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: bm184.set Matches group v1cm_b3 in /home/filehost/cwalker/sched/catalogs/freq.dat Setup group: 8 Station: VLBA_HN Total bit rate: 32 Format: VLBA1:2 Bits per sample: 2 Sample rate: 8.000 Number of channels: 2 Passes/head pos: 4 Speedup factor: 2.00 Tape speeds: Low density - 133.330 ips, High density - 80.00 ips Time per pass for 17600 ft, High density tapes is: 00:44:00 1st LO= 21500.00 21500.00 Net SB= U U Pol. = RCP LCP BBC = 1 2 BBC SB= U U IF = B D VLBA FE= omit 1cm omit 1cm VLBA Synth= 9.1 15.4 12.4 The following frequency sets based on this setup were used. Frequency Set: 8 Based on FREQ, BW, and/or DOPPLER in schedule. Used pcal sets: 1 LO sum= 22228.78 22228.78 BBC fr= 728.78 728.78 Bandwd= 4.000 4.000 The following pulse cal sets were used with this setup: Pulse cal detection set: 1 PCAL = OFF PCALXB1= S1 S2 OFF OFF OFF OFF OFF OFF PCALXB2= M1 M2 OFF OFF 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, 10 track2= 18, 26 track3= 3, 11 track4= 19, 27 barrel=roll_auto SOURCE LIST -- H2O maser proper motions in low-mass YSOs 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) * ZCMA 07 01 22.524827 * 07 03 43.161000 07 03 51.439966 -11 28 36.05092 *-11 33 06.14000 -11 33 29.21905 From catalog imbedded in main SCHED input file. target source: single correlator pass * J0825+0309 08 23 13.540327 * 08 25 50.338356 08 26 00.033994 0823+033 03 19 15.40188 * 03 09 24.52014 03 08 46.41459 0823+033 From catalog imbedded in main SCHED input file. J0825+03 ICRF - Ext.1 Source - 1998 IERS Annual Report J0555+3948 05 52 01.407166 * 05 55 30.805609 05 55 42.672840 0552+398 39 48 21.94585 * 39 48 49.16500 39 49 00.70000 0552+398 From catalog imbedded in main SCHED input file. * DA193 ICRF - Ext.1 Source - 1998 IERS Annual Report J0555+39 * J0927+3902 09 23 55.319195 * 09 27 03.013916 09 27 15.212875 0923+392 39 15 23.56655 * 39 02 20.85195 39 01 40.88227 4C39.25 From catalog imbedded in main SCHED input file. 4C39.25 ICRF - Ext.1 Source - 1998 IERS Annual Report J0927+39 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) ZCMA 93.4 J0825+0309 112.3 DA193 74.9 J0927+3902 114.4 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