COVER INFORMATION Station: ONSALA85 (Code On ) Experiment: Parsec scale structure in ISM and the nature of 21-cm absorbers Exp. Code: GG074 Schedule Version: 1.00 Processed by SCHED version: 9.40 Release Jan. 13, 2011. PI: Neeraj Gupta Address: ASTRON Postbus 2 7990 AA Dwingeloo The Netherlands Phone: +31-521-595782 EMAIL: gupta@astron.nl Fax: Phone during observation: +31-521-595782 Observing mode: Notes: Concerning this schedule you can also contact Yurii Pidopryhora, pidopryhora@jive.nl, +31-521-596548 COVER LETTER: Block schedule quote: GG074 Eb Wb Jb1 On25 Mc Tr -- EVN Eu 159 1700(08/06)-0300(09/06) 21cm (1396.5 MHz) US 159 1700(08/06)-0500(09/06) VLBA Target: J1243+4043 Delay calibrator: J1242+3751 Bandpass claibrators/fringe-finders: 4C39.25, 3C345 WSRT calibrator: 3C286 In this experiment we observe an HI absorber (with z~0.0169) in front of a ~196 mJy quasar. The peak absorption is at ~1396.47 MHz, which is centered at one of the observation subbands (with 0 frequency offset). !!! PCAL is OFF for this experiment !!! Schedule for ONSALA85 (Code On ) Page 2 Parsec scale structure in ISM and the nature of 21-cm absorbers UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Wed 8 Jun 2011 Day 159 --- Next scan frequencies: 1390.83 1390.83 1394.77 1394.77 1398.70 1398.70 1402.63 1402.63 Next BBC frequencies: 190.83 190.83 194.77 194.77 198.70 198.70 202.63 202.63 Next scan bandwidths: 4.00 4.00 4.00 4.00 4.00 4.00 4.00 4.00 17 00 00 J1243+4043 10 54 35 65.7 121.6 -1.8 0.0 0 0 16 59 55 17 11 30 --- 11 06 07 67.0 126.0 -1.6 0.0 690 11 16 59 59 17 12 00 J1243+4043 11 06 37 67.1 126.2 -1.6 0.0 24 11 17 11 55 17 23 30 --- 11 18 09 68.3 131.0 -1.4 0.0 690 22 17 11 59 17 24 30 J1242+3751 11 19 09 66.0 135.7 -1.4 0.0 39 22 17 24 25 17 26 30 =1240+381 11 21 10 66.2 136.6 -1.4 0.0 120 24 17 24 29 17 27 50 3C286 11 22 30 55.0 126.5 -2.2 0.0 30 24 17 27 45 17 32 50 --- 11 27 31 55.6 128.1 -2.1 0.0 300 29 17 27 49 17 34 30 J1243+4043 11 29 11 69.4 136.0 -1.3 0.0 49 29 17 34 25 17 46 20 --- 11 41 03 70.4 141.8 -1.1 0.0 710 41 17 34 29 17 46 50 J1243+4043 11 41 33 70.5 142.0 -1.0 0.0 24 41 17 46 45 17 58 40 --- 11 53 25 71.4 148.3 -0.9 0.0 710 52 17 46 49 17 59 40 J1242+3751 11 54 25 68.8 152.4 -0.8 0.0 39 52 17 59 35 18 01 40 =1240+381 11 56 25 68.9 153.4 -0.8 0.0 120 54 17 59 39 18 02 40 J1243+4043 11 57 26 71.6 150.6 -0.8 0.0 39 54 18 02 35 18 14 10 --- 12 08 57 72.3 157.3 -0.6 0.0 690 66 18 02 39 18 14 40 J1243+4043 12 09 28 72.4 157.6 -0.6 0.0 24 66 18 14 35 18 26 10 --- 12 20 59 72.9 164.7 -0.4 0.0 690 77 18 14 39 18 27 10 J1242+3751 12 22 00 70.1 167.5 -0.4 0.0 39 77 18 27 05 18 29 10 =1240+381 12 24 00 70.1 168.6 -0.3 0.0 120 79 18 27 09 18 30 10 J1243+4043 12 25 00 73.0 167.3 -0.3 0.0 39 79 18 30 05 18 41 40 --- 12 36 32 73.2 174.8 -0.1 0.0 690 90 18 30 09 18 42 10 J1243+4043 12 37 02 73.2 175.1 -0.1 0.0 24 90 18 42 05 18 53 40 --- 12 48 34 73.3 182.7 0.1 0.0 690 101 18 42 09 Schedule for ONSALA85 (Code On ) Page 3 Parsec scale structure in ISM and the nature of 21-cm absorbers UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Wed 8 Jun 2011 Day 159 --- 18 54 40 J1242+3751 12 49 34 70.4 183.6 0.1 0.0 39 101 18 54 35 18 56 40 =1240+381 12 51 34 70.3 184.8 0.1 0.0 120 103 18 54 39 19 04 50 4C39.25 12 59 46 51.5 264.9 3.5 0.0 312 103 19 04 45 19 09 50 --- 13 04 47 50.8 266.1 3.6 0.0 300 108 19 04 49 19 17 20 J1243+4043 13 12 18 72.7 198.0 0.5 0.0 275 108 19 17 15 19 28 50 --- 13 23 50 72.1 205.0 0.7 0.0 690 119 19 17 19 19 29 20 J1243+4043 13 24 20 72.1 205.2 0.7 0.0 24 119 19 29 15 19 40 50 --- 13 35 52 71.4 211.8 0.9 0.0 690 131 19 29 19 19 41 50 J1242+3751 13 36 52 68.5 209.9 0.9 0.0 39 131 19 41 45 19 43 50 =1240+381 13 38 52 68.4 210.9 0.9 0.0 120 133 19 41 49 19 44 50 J1243+4043 13 39 52 71.1 214.0 0.9 0.0 39 133 19 44 45 19 56 20 --- 13 51 24 70.1 219.9 1.1 0.0 690 144 19 44 49 19 56 50 J1243+4043 13 51 54 70.1 220.2 1.1 0.0 24 144 19 56 45 20 08 20 --- 14 03 26 69.0 225.7 1.3 0.0 690 155 19 56 49 20 09 20 J1242+3751 14 04 26 66.3 222.9 1.4 0.0 39 155 20 09 15 20 11 20 =1240+381 14 06 27 66.1 223.8 1.4 0.0 120 157 20 09 19 20 12 20 J1243+4043 14 07 27 68.6 227.5 1.4 0.0 39 157 20 12 15 20 23 50 --- 14 18 59 67.4 232.4 1.6 0.0 690 168 20 12 19 20 24 20 J1243+4043 14 19 29 67.4 232.6 1.6 0.0 24 168 20 24 15 20 35 50 --- 14 31 01 66.1 237.1 1.8 0.0 690 180 20 24 19 20 36 50 J1242+3751 14 32 01 63.5 234.0 1.8 0.0 39 180 20 36 45 20 38 50 =1240+381 14 34 01 63.3 234.7 1.8 0.0 120 182 20 36 49 20 39 50 J1243+4043 14 35 01 65.7 238.6 1.8 0.0 39 182 20 39 45 20 51 20 --- 14 46 33 64.3 242.6 2.0 0.0 690 193 20 39 49 20 51 50 J1243+4043 14 47 03 64.2 242.8 2.0 0.0 24 193 20 51 45 21 03 20 --- 14 58 35 62.8 246.6 2.2 0.0 690 204 20 51 49 21 04 20 J1242+3751 14 59 35 60.3 243.4 2.3 0.0 39 204 21 04 15 21 06 20 =1240+381 15 01 36 60.1 244.0 2.3 0.0 120 206 21 04 19 21 07 20 J1243+4043 15 02 36 62.3 247.8 2.3 0.0 39 206 21 07 15 21 18 50 --- 15 14 08 60.9 251.3 2.5 0.0 690 217 21 07 19 Schedule for ONSALA85 (Code On ) Page 4 Parsec scale structure in ISM and the nature of 21-cm absorbers UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Wed 8 Jun 2011 Day 159 --- 21 19 20 J1243+4043 15 14 38 60.8 251.4 2.5 0.0 24 217 21 19 15 21 30 50 --- 15 26 10 59.3 254.6 2.7 0.0 690 228 21 19 19 21 31 50 J1242+3751 15 27 10 56.9 251.6 2.7 0.0 39 228 21 31 45 21 33 50 =1240+381 15 29 10 56.7 252.1 2.8 0.0 120 230 21 31 49 21 38 00 4C39.25 15 33 21 31.3 294.6 6.1 0.0 72 230 21 37 55 21 43 00 --- 15 38 22 30.7 295.4 6.2 0.0 300 235 21 37 59 21 47 10 J1243+4043 15 42 32 57.2 258.9 3.0 0.0 76 235 21 47 05 21 58 40 --- 15 54 04 55.7 261.7 3.2 0.0 690 247 21 47 09 21 59 10 J1243+4043 15 54 34 55.6 261.8 3.2 0.0 24 247 21 59 05 22 10 40 --- 16 06 06 54.0 264.5 3.4 0.0 690 258 21 59 09 22 11 40 J1242+3751 16 07 07 51.7 261.7 3.4 0.0 39 258 22 11 35 22 13 40 =1240+381 16 09 07 51.4 262.2 3.4 0.0 120 260 22 11 39 22 14 40 J1243+4043 16 10 07 53.5 265.4 3.4 0.0 39 260 22 14 35 22 26 10 --- 16 21 39 52.0 268.0 3.6 0.0 690 271 22 14 39 22 26 40 J1243+4043 16 22 09 51.9 268.1 3.6 0.0 24 271 22 26 35 22 38 10 --- 16 33 41 50.3 270.5 3.8 0.0 690 282 22 26 39 22 39 10 J1242+3751 16 34 41 48.0 267.9 3.9 0.0 39 282 22 39 05 22 41 10 =1240+381 16 36 41 47.7 268.3 3.9 0.0 120 284 22 39 09 22 42 10 J1243+4043 16 37 42 49.8 271.4 3.9 0.0 39 284 22 42 05 22 53 40 --- 16 49 13 48.2 273.7 4.1 0.0 690 295 22 42 09 22 54 10 J1243+4043 16 49 43 48.2 273.8 4.1 0.0 24 295 22 54 05 23 05 40 --- 17 01 15 46.6 276.1 4.3 0.0 690 307 22 54 09 23 06 40 J1242+3751 17 02 16 44.3 273.7 4.3 0.0 39 307 23 06 35 23 08 40 =1240+381 17 04 16 44.0 274.1 4.3 0.0 120 309 23 06 39 23 09 40 J1243+4043 17 05 16 46.1 276.9 4.3 0.0 39 309 23 09 35 23 21 10 --- 17 16 48 44.6 279.1 4.5 0.0 690 320 23 09 39 23 21 40 J1243+4043 17 17 18 44.5 279.2 4.5 0.0 24 320 23 21 35 23 33 10 --- 17 28 50 43.0 281.4 4.7 0.0 690 331 23 21 39 23 34 10 J1242+3751 17 29 50 40.6 279.1 4.8 0.0 39 331 23 34 05 23 36 10 =1240+381 17 31 50 40.3 279.5 4.8 0.0 120 333 23 34 09 Schedule for ONSALA85 (Code On ) Page 5 Parsec scale structure in ISM and the nature of 21-cm absorbers UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Wed 8 Jun 2011 Day 159 --- 23 37 10 J1243+4043 17 32 51 42.4 282.1 4.8 0.0 39 333 23 37 05 23 48 40 --- 17 44 22 40.9 284.2 5.0 0.0 690 344 23 37 09 --- Start: Wed 8 Jun 2011 Day 159 -- Stop: Thu 9 Jun 2011 Day 160 --- 23 49 10 J1243+4043 17 44 53 40.9 284.3 5.0 0.0 24 344 23 49 05 00 00 40 --- 17 56 24 39.4 286.4 5.2 0.0 690 355 23 49 09 00 01 40 J1242+3751 17 57 25 36.9 284.3 5.2 0.0 39 355 00 01 35 00 03 40 =1240+381 17 59 25 36.7 284.7 5.3 0.0 120 357 00 01 39 00 04 40 J1243+4043 18 00 25 38.8 287.1 5.3 0.0 39 357 00 04 35 00 16 10 --- 18 11 57 37.4 289.2 5.5 0.0 690 369 00 04 39 00 16 40 J1243+4043 18 12 27 37.3 289.2 5.5 0.0 24 369 00 16 35 00 28 10 --- 18 23 59 35.8 291.3 5.7 0.0 690 380 00 16 39 00 29 10 J1242+3751 18 24 59 33.4 289.4 5.7 0.0 39 380 00 29 05 00 31 10 =1240+381 18 26 59 33.1 289.7 5.7 0.0 120 382 00 29 09 00 36 10 3C345 18 32 00 65.2 236.6 1.8 0.0 89 382 00 36 05 00 41 10 --- 18 37 01 64.6 238.4 1.9 0.0 300 387 00 36 09 00 46 10 J1243+4043 18 42 02 33.6 294.4 6.0 0.0 84 387 00 46 05 00 57 40 --- 18 53 34 32.2 296.4 6.2 0.0 690 398 00 46 09 00 58 10 J1243+4043 18 54 04 32.1 296.5 6.2 0.0 24 398 00 58 05 01 09 40 --- 19 05 36 30.8 298.5 6.4 0.0 690 409 00 58 09 01 10 40 J1242+3751 19 06 36 28.2 296.8 6.4 0.0 39 409 01 10 35 01 12 40 =1240+381 19 08 36 28.0 297.2 6.4 0.0 120 411 01 10 39 01 13 40 J1243+4043 19 09 36 30.3 299.2 6.4 0.0 39 411 01 13 35 01 25 10 --- 19 21 08 28.9 301.2 6.6 0.0 690 422 01 13 39 01 25 40 J1243+4043 19 21 38 28.9 301.3 6.6 0.0 24 422 01 25 35 01 37 10 --- 19 33 10 27.6 303.2 6.8 0.0 690 434 01 25 39 01 38 10 J1242+3751 19 34 10 25.0 301.7 6.8 0.0 39 434 01 38 05 01 40 10 =1240+381 19 36 11 24.8 302.1 6.9 0.0 120 436 01 38 09 01 46 10 J1243+4043 19 42 12 26.6 304.8 7.0 0.0 339 436 01 46 05 01 55 10 --- 19 51 13 25.6 306.3 7.1 0.0 540 444 01 46 09 Schedule for ONSALA85 (Code On ) Page 6 Parsec scale structure in ISM and the nature of 21-cm absorbers UP: D => Below limits; H => Below horizon mask; W => still slewing at end; blank => Up. Early: Seconds between end of slew and start. Dwell: On source seconds. Disk: GBytes recorded to this point. TPStart: Recording start time. Frequencies are LO sum (band edge). SYNC: Time correlator is expected to sync up. ---------------------------------------------------------------------------------------- Start UT Source Start / Stop Early Disk TPStart Stop UT LST EL AZ HA UP ParA Dwell GBytes SYNC ---------------------------------------------------------------------------------------- --- Thu 9 Jun 2011 Day 160 --- 01 55 40 J1243+4043 19 51 43 25.5 306.4 7.1 0.0 24 444 01 55 35 02 04 50 --- 20 00 55 24.5 308.0 7.3 0.0 550 453 01 55 39 02 05 50 J1242+3751 20 01 55 21.9 306.6 7.3 0.0 39 453 02 05 45 02 07 50 =1240+381 20 03 55 21.7 307.0 7.3 0.0 120 455 02 05 49 02 08 50 J1243+4043 20 04 55 24.1 308.7 7.3 0.0 39 455 02 08 45 02 17 20 --- 20 13 27 23.2 310.2 7.5 0.0 510 464 02 08 49 02 17 50 J1243+4043 20 13 57 23.2 310.3 7.5 0.0 24 464 02 17 45 02 26 20 --- 20 22 28 22.3 311.8 7.6 0.0 510 472 02 17 49 02 27 20 J1242+3751 20 23 29 19.6 310.5 7.7 0.0 39 472 02 27 15 02 29 20 =1240+381 20 25 29 19.4 310.9 7.7 0.0 120 474 02 27 19 02 30 20 J1243+4043 20 26 29 21.9 312.4 7.7 0.0 39 474 02 30 15 02 38 50 --- 20 35 00 21.1 313.9 7.8 0.0 510 482 02 30 19 02 39 20 J1243+4043 20 35 30 21.0 314.0 7.9 0.0 24 482 02 39 15 02 47 50 --- 20 44 02 20.2 315.5 8.0 0.0 510 491 02 39 19 02 48 50 J1242+3751 20 45 02 17.5 314.4 8.0 0.0 39 491 02 48 45 02 50 50 =1240+381 20 47 02 17.3 314.7 8.1 0.0 120 493 02 48 49 02 55 40 3C345 20 51 53 47.1 273.6 4.1 0.0 79 493 02 55 35 03 00 00 --- 20 56 14 46.5 274.4 4.2 0.0 260 497 02 55 39 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. Setup file: sess211.H128 Matching groups in /aps3/sched9.4/catalogs/freq.dat: on21cm2 Values from E-mail J.Conway (CR 21Oct02) Setup group: 4 Station: ONSALA85 Total bit rate: 128 Format: MKIV1:1 Bits per sample: 2 Sample rate: 8.000 Number of channels: 8 DBE type: Speedup factor: 1.00 Disk used to record data. 1st LO= 1200.00 1200.00 1200.00 1200.00 1200.00 1200.00 1200.00 1200.00 Net SB= U U U U U U U U Pol. = RCP LCP RCP LCP RCP LCP RCP LCP BBC = 2 1 4 3 6 5 8 7 BBC SB= U U U U U U U U IF = 2N 1N 2N 1N 2N 1N 2N 1N The following frequency sets based on this setup were used. Frequency Set: 5 Based on FREQ, BW, and/or DOPPLER in schedule. LO sum= 1390.83 1390.83 1394.77 1394.77 1398.70 1398.70 1402.63 1402.63 BBC fr= 190.83 190.83 194.77 194.77 198.70 198.70 202.63 202.63 Bandwd= 4.000 4.000 4.000 4.000 4.000 4.000 4.000 4.000 Track assignments are: track1= 2, 6, 10, 14, 18, 22, 26, 30 barrel=roll_off SOURCES USED IN RECORDING SCANS -- Parsec scale structure in ISM and the nature of 21-cm absorbers 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) Error (B1950) (J2000) (Date) (mas) * J1243+4043 12 41 32.734570 * 12 43 55.781600 12 44 29.987313 0.00 41 00 22.94680 * 40 43 58.43500 40 40 17.96403 0.00 From catalog imbedded in main SCHED input file. Doppler based on heliocentric frame and optical definition. Velocities: 5051.90 5051.90 5051.90 5051.90 5051.90 5051.90 5051.90 5051.90 8.931 scan and 700.258 baseline hours in setup: sess211.H128 J0927+3902 09 23 55.319213 * 09 27 03.013934 09 27 46.245428 0.29 0923+392 39 15 23.56646 * 39 02 20.85186 38 59 24.55706 0.16 * 4C39.25 /aps3/sched9.4/catalogs/sources.vlba J0927+39 GSFC 2010a astro solution 231732 Observations Doppler based on other sources. 0.167 scan and 18.750 baseline hours in setup: sess211.H128 * J1242+3751 12 40 27.034314 * 12 42 51.369077 12 43 25.855934 0.04 1240+381 38 07 25.41734 * 37 51 00.02525 37 47 18.58321 0.03 J1242+37 /aps3/sched9.4/catalogs/sources.vlba GSFC 2010a astro solution 1290 Observations Doppler based on other sources. 0.800 scan and 62.633 baseline hours in setup: sess211.H128 J1331+3030 13 28 49.657759 * 13 31 08.288051 13 31 41.716249 0.19 * 3C286 30 45 58.64061 * 30 30 32.95925 30 27 03.00073 0.17 1328+307 /aps3/sched9.4/catalogs/sources.vlba J1331+30 GSFC 2010a astro solution 276 Observations Doppler based on other sources. 0.167 scan and 0.833 baseline hours in setup: sess211.H128 J1642+3948 16 41 17.606228 * 16 42 58.809965 16 43 24.330295 0.81 * 3C345 39 54 10.81494 * 39 48 36.99400 39 47 20.92672 0.54 1641+399 /aps3/sched9.4/catalogs/sources.vlba J1642+39 GSFC 2010a astro solution 52595 Observations Doppler based on other sources. 0.236 scan and 18.792 baseline hours in setup: sess211.H128 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) J1243+4043 92.0 4C39.25 57.0 J1242+3751 93.4 3C286 105.8 3C345 117.1 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