COVER INFORMATION Station: VLBA_FD (Code Fd ) 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 VLBA_FD (Code Fd ) 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: 709.17 709.17 705.23 705.23 701.30 701.30 697.37 697.37 Next scan bandwidths: 4.00 4.00 4.00 4.00 4.00 4.00 4.00 4.00 19 04 50 4C39.25 05 16 19 38.7 62.5 -4.2 -79.0 0 0 19 04 45 19 09 50 --- 05 21 20 39.7 62.7 -4.1 -79.6 300 5 19 04 46 19 44 50 J1243+4043 05 56 25 11.3 49.2 -6.8 -59.1 2026 5 19 44 45 19 56 20 --- 06 07 57 13.2 50.3 -6.6 -60.8 690 16 19 44 46 19 56 50 J1243+4043 06 08 27 13.3 50.3 -6.6 -60.8 24 16 19 56 45 20 08 20 --- 06 19 59 15.2 51.4 -6.4 -62.4 690 27 19 56 46 20 09 20 J1242+3751 06 20 59 14.2 54.2 -6.4 -62.1 50 27 20 09 15 20 11 20 =1240+381 06 23 00 14.6 54.4 -6.3 -62.3 120 29 20 09 16 20 12 20 J1243+4043 06 24 00 15.9 51.8 -6.3 -63.0 50 29 20 12 15 20 23 50 --- 06 35 32 17.9 52.8 -6.1 -64.6 690 41 20 12 16 20 24 20 J1243+4043 06 36 02 17.9 52.8 -6.1 -64.7 24 41 20 24 15 20 35 50 --- 06 47 34 19.9 53.8 -5.9 -66.2 690 52 20 24 16 20 36 50 J1242+3751 06 48 34 19.1 56.7 -5.9 -65.6 50 52 20 36 45 20 38 50 =1240+381 06 50 34 19.5 56.9 -5.9 -65.8 120 54 20 36 46 20 39 50 J1243+4043 06 51 34 20.6 54.1 -5.9 -66.8 50 54 20 39 45 20 51 20 --- 07 03 06 22.6 55.0 -5.7 -68.3 690 65 20 39 46 20 51 50 J1243+4043 07 03 36 22.7 55.0 -5.7 -68.4 24 65 20 51 45 21 03 20 --- 07 15 08 24.8 55.9 -5.5 -69.9 690 76 20 51 46 21 04 20 J1242+3751 07 16 08 24.1 59.0 -5.5 -69.0 50 76 21 04 15 21 06 20 =1240+381 07 18 09 24.5 59.2 -5.4 -69.2 120 78 21 04 16 21 07 20 J1243+4043 07 19 09 25.5 56.2 -5.4 -70.5 50 78 21 07 15 21 18 50 --- 07 30 41 27.6 57.0 -5.2 -72.0 690 89 21 07 16 21 19 20 J1243+4043 07 31 11 27.7 57.0 -5.2 -72.0 24 89 21 19 15 21 30 50 --- 07 42 43 29.7 57.7 -5.0 -73.6 690 101 21 19 16 Schedule for VLBA_FD (Code Fd ) 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 --- 21 31 50 J1242+3751 07 43 43 29.3 61.0 -5.0 -72.3 50 101 21 31 45 21 33 50 =1240+381 07 45 43 29.7 61.2 -5.0 -72.5 120 103 21 31 46 21 38 00 4C39.25 07 49 54 68.3 60.7 -1.6 -105.2 167 103 21 37 55 21 43 00 --- 07 54 55 69.3 59.9 -1.5 -106.7 300 108 21 37 56 21 47 10 J1243+4043 07 59 05 32.7 58.7 -4.8 -75.7 169 108 21 47 05 21 58 40 --- 08 10 37 34.9 59.3 -4.6 -77.3 690 119 21 47 06 21 59 10 J1243+4043 08 11 07 35.0 59.3 -4.6 -77.3 24 119 21 59 05 22 10 40 --- 08 22 39 37.1 59.9 -4.4 -78.9 690 130 21 59 06 22 11 40 J1242+3751 08 23 39 36.9 63.5 -4.3 -77.0 50 130 22 11 35 22 13 40 =1240+381 08 25 40 37.3 63.6 -4.3 -77.3 120 132 22 11 36 22 14 40 J1243+4043 08 26 40 37.8 60.1 -4.3 -79.4 50 132 22 14 35 22 26 10 --- 08 38 12 40.0 60.5 -4.1 -81.0 690 143 22 14 36 22 26 40 J1243+4043 08 38 42 40.1 60.6 -4.1 -81.1 24 143 22 26 35 22 38 10 --- 08 50 14 42.3 61.0 -3.9 -82.7 690 154 22 26 36 22 39 10 J1242+3751 08 51 14 42.2 64.9 -3.9 -80.4 49 154 22 39 05 22 41 10 =1240+381 08 53 14 42.6 65.0 -3.8 -80.6 120 156 22 39 06 22 42 10 J1243+4043 08 54 15 43.0 61.1 -3.8 -83.3 49 156 22 42 05 22 53 40 --- 09 05 46 45.2 61.4 -3.6 -84.9 690 168 22 42 06 22 54 10 J1243+4043 09 06 16 45.3 61.4 -3.6 -85.0 24 168 22 54 05 23 05 40 --- 09 17 48 47.5 61.6 -3.4 -86.7 690 179 22 54 06 23 06 40 J1242+3751 09 18 49 47.6 66.0 -3.4 -83.9 49 179 23 06 35 23 08 40 =1240+381 09 20 49 48.0 66.0 -3.4 -84.1 120 181 23 06 36 23 09 40 J1243+4043 09 21 49 48.2 61.7 -3.4 -87.3 49 181 23 09 35 23 21 10 --- 09 33 21 50.4 61.8 -3.2 -89.1 690 192 23 09 36 23 21 40 J1243+4043 09 33 51 50.5 61.8 -3.2 -89.2 24 192 23 21 35 23 33 10 --- 09 45 23 52.7 61.8 -3.0 -91.1 690 203 23 21 36 23 34 10 J1242+3751 09 46 23 53.1 66.6 -3.0 -87.6 49 203 23 34 05 23 36 10 =1240+381 09 48 23 53.5 66.6 -2.9 -87.9 120 205 23 34 06 23 37 10 J1243+4043 09 49 24 53.4 61.8 -2.9 -91.8 49 205 23 37 05 23 48 40 --- 10 00 55 55.6 61.6 -2.7 -93.8 690 217 23 37 06 Schedule for VLBA_FD (Code Fd ) 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 ---------------------------------------------------------------------------------------- --- Start: Wed 8 Jun 2011 Day 159 -- Stop: Thu 9 Jun 2011 Day 160 --- 23 49 10 J1243+4043 10 01 26 55.7 61.6 -2.7 -93.9 24 217 23 49 05 00 00 40 --- 10 12 57 57.9 61.2 -2.5 -96.1 690 228 23 49 06 00 01 40 J1242+3751 10 13 58 58.5 66.6 -2.5 -91.8 48 228 00 01 35 00 03 40 =1240+381 10 15 58 58.9 66.6 -2.5 -92.1 120 230 00 01 36 00 04 40 J1243+4043 10 16 58 58.7 61.1 -2.5 -96.9 48 230 00 04 35 00 16 10 --- 10 28 30 60.8 60.5 -2.3 -99.3 690 241 00 04 36 00 16 40 J1243+4043 10 29 00 60.9 60.4 -2.3 -99.4 24 241 00 16 35 00 28 10 --- 10 40 32 63.1 59.6 -2.1 -102.0 690 252 00 16 36 00 29 10 J1242+3751 10 41 32 63.9 65.8 -2.0 -96.8 48 252 00 29 05 00 31 10 =1240+381 10 43 32 64.3 65.7 -2.0 -97.2 120 254 00 29 06 00 36 10 3C345 10 48 33 19.9 54.8 -5.9 -66.2 203 254 00 36 05 00 41 10 --- 10 53 34 20.8 55.2 -5.8 -66.9 300 259 00 36 06 00 46 10 J1243+4043 10 58 35 66.4 57.6 -1.8 -106.7 204 259 00 46 05 00 57 40 --- 11 10 07 68.5 55.8 -1.6 -110.3 690 270 00 46 06 00 58 10 J1243+4043 11 10 37 68.5 55.7 -1.6 -110.5 24 270 00 58 05 01 09 40 --- 11 22 09 70.6 53.3 -1.4 -114.6 690 282 00 58 06 01 10 40 J1242+3751 11 23 09 72.0 61.2 -1.3 -107.4 46 282 01 10 35 01 12 40 =1240+381 11 25 09 72.4 60.8 -1.3 -108.1 120 284 01 10 36 01 13 40 J1243+4043 11 26 09 71.3 52.3 -1.3 -116.2 46 284 01 13 35 01 25 10 --- 11 37 41 73.2 48.8 -1.1 -121.3 690 295 01 13 36 01 25 40 J1243+4043 11 38 11 73.2 48.7 -1.1 -121.6 24 295 01 25 35 01 37 10 --- 11 49 43 75.0 44.1 -0.9 -127.9 690 306 01 25 36 01 38 10 J1242+3751 11 50 43 77.0 53.1 -0.9 -119.4 45 306 01 38 05 01 40 10 =1240+381 11 52 44 77.3 52.2 -0.8 -120.6 120 308 01 38 06 01 46 10 J1243+4043 11 58 45 76.3 39.6 -0.8 -133.7 345 308 01 46 05 01 55 10 --- 12 07 46 77.5 34.0 -0.6 -140.6 540 317 01 46 06 01 55 40 J1243+4043 12 08 16 77.6 33.7 -0.6 -141.0 24 317 01 55 35 02 04 50 --- 12 17 28 78.6 26.8 -0.5 -149.3 550 326 01 55 36 02 05 50 J1242+3751 12 18 28 81.2 34.1 -0.4 -142.4 46 326 02 05 45 02 07 50 =1240+381 12 20 28 81.4 32.0 -0.4 -144.8 120 328 02 05 46 Schedule for VLBA_FD (Code Fd ) 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 ---------------------------------------------------------------------------------------- --- Thu 9 Jun 2011 Day 160 --- 02 08 50 J1243+4043 12 21 28 78.9 23.3 -0.4 -153.3 47 328 02 08 45 02 17 20 --- 12 30 00 79.5 15.3 -0.2 -162.6 510 336 02 08 46 02 17 50 J1243+4043 12 30 30 79.6 14.8 -0.2 -163.1 24 336 02 17 45 02 26 20 --- 12 39 01 79.9 5.9 -0.1 -173.3 510 344 02 17 46 02 27 20 J1242+3751 12 40 01 82.8 5.4 -0.1 -174.1 46 344 02 27 15 02 29 20 =1240+381 12 42 02 82.8 2.2 0.0 -177.6 120 346 02 27 16 02 30 20 J1243+4043 12 43 02 80.0 1.6 0.0 -178.2 46 346 02 30 15 02 38 50 --- 12 51 33 79.9 -7.6 0.1 171.3 510 355 02 30 16 02 39 20 J1243+4043 12 52 03 79.8 -8.2 0.1 170.7 24 355 02 39 15 02 47 50 --- 13 00 35 79.4 -16.9 0.3 160.8 510 363 02 39 16 02 48 50 J1242+3751 13 01 35 81.9 -26.4 0.3 151.0 46 363 02 48 45 02 50 50 =1240+381 13 03 35 81.7 -28.8 0.3 148.3 120 365 02 48 46 02 55 40 3C345 13 08 26 45.8 62.8 -3.6 -84.6 210 365 02 55 35 03 00 00 --- 13 12 47 46.6 62.9 -3.5 -85.2 260 369 02 55 36 03 02 30 J1243+4043 13 15 17 78.2 -29.7 0.5 145.7 77 369 03 02 25 03 14 00 --- 13 26 49 76.8 -37.6 0.7 136.2 690 380 03 02 26 03 14 30 J1243+4043 13 27 19 76.7 -37.9 0.7 135.8 24 380 03 14 25 03 26 00 --- 13 38 51 75.1 -43.9 0.9 128.1 690 392 03 14 26 03 26 50 J1242+3751 13 39 41 76.4 -54.6 0.9 117.5 35 392 03 26 45 03 28 50 =1240+381 13 41 42 76.0 -55.3 1.0 116.4 120 394 03 26 46 03 29 50 J1243+4043 13 42 42 74.5 -45.6 1.0 125.9 45 394 03 29 45 03 41 20 --- 13 54 14 72.7 -49.8 1.2 120.0 690 405 03 29 46 03 41 50 J1243+4043 13 54 44 72.6 -50.0 1.2 119.7 24 405 03 41 45 03 53 20 --- 14 06 16 70.7 -53.1 1.4 114.8 690 416 03 41 46 03 54 10 J1242+3751 14 07 06 71.3 -61.8 1.4 106.3 36 416 03 54 05 03 56 10 =1240+381 14 09 06 71.0 -62.2 1.4 105.7 120 418 03 54 06 03 57 10 J1243+4043 14 10 06 70.0 -54.0 1.4 113.4 46 418 03 57 05 04 08 40 --- 14 21 38 68.0 -56.2 1.6 109.4 690 429 03 57 06 04 09 10 J1243+4043 14 22 08 67.9 -56.3 1.6 109.2 24 429 04 09 05 04 20 40 --- 14 33 40 65.8 -58.0 1.8 105.8 690 441 04 09 06 Schedule for VLBA_FD (Code Fd ) 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 --- 04 21 30 J1242+3751 14 34 30 66.1 -65.1 1.9 99.0 37 441 04 21 25 04 23 30 =1240+381 14 36 31 65.7 -65.2 1.9 98.6 120 443 04 21 26 04 24 30 J1243+4043 14 37 31 65.1 -58.5 1.9 104.8 47 443 04 24 25 04 36 00 --- 14 49 03 63.0 -59.6 2.1 101.9 690 454 04 24 26 04 36 30 J1243+4043 14 49 33 62.9 -59.7 2.1 101.7 24 454 04 36 25 04 48 00 --- 15 01 05 60.7 -60.5 2.3 99.1 690 465 04 36 26 04 48 50 J1242+3751 15 01 55 60.7 -66.4 2.3 93.6 38 465 04 48 45 04 50 50 =1240+381 15 03 55 60.3 -66.5 2.3 93.3 120 467 04 48 46 04 55 10 3C345 15 08 16 68.6 58.2 -1.6 -107.9 163 467 04 55 05 05 00 00 --- 15 13 07 69.5 57.3 -1.5 -109.5 290 472 04 55 06 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: v20cm_1 FD and KP filtered below 1330. SC filtered above 1440 Setup group: 9 Station: VLBA_FD Total bit rate: 128 Format: VLBA1:1 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= 2100.00 2100.00 2100.00 2100.00 2100.00 2100.00 2100.00 2100.00 Net SB= U U U U U U U U Pol. = RCP LCP RCP LCP RCP LCP RCP LCP BBC = 1 2 3 4 5 6 7 8 BBC SB= L L L L L L L L IF = A C A C A C A C VLBA FE= 20cm omit 20cm omit VLBA Synth= 15.4 2.1 15.4 The following frequency sets based on this setup were used. Frequency Set: 10 Based on FREQ, BW, and/or DOPPLER in schedule. Used pcal sets: 1 LO sum= 1390.83 1390.83 1394.77 1394.77 1398.70 1398.70 1402.63 1402.63 BBC fr= 709.17 709.17 705.23 705.23 701.30 701.30 697.37 697.37 Bandwd= 4.000 4.000 4.000 4.000 4.000 4.000 4.000 4.000 The following pulse cal sets were used with this setup: Pulse cal detection set: 1 PCAL = OFF PCALXB1= S1 S2 S3 S4 S5 S6 S7 S8 PCALXB2= M1 M2 M3 M4 M5 M6 M7 M8 PCALFR1= 0 0 0 0 0 0 0 0 PCALFR2= 0 0 0 0 0 0 0 0 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