COVER INFORMATION Station: VLBA_KP (Code Kp ) 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_KP (Code Kp ) 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 04 45 39 33.6 61.6 -4.7 -73.7 0 0 19 04 45 19 09 50 --- 04 50 39 34.5 61.9 -4.6 -74.3 300 5 19 04 46 20 12 20 J1243+4043 05 53 20 11.7 49.0 -6.9 -57.7 3676 5 20 12 15 20 23 50 --- 06 04 52 13.5 50.2 -6.7 -59.3 690 16 20 12 16 20 24 20 J1243+4043 06 05 22 13.6 50.3 -6.7 -59.4 24 16 20 24 15 20 35 50 --- 06 16 54 15.5 51.4 -6.5 -60.9 690 27 20 24 16 20 36 50 J1242+3751 06 17 54 14.5 54.2 -6.4 -60.6 50 27 20 36 45 20 38 50 =1240+381 06 19 54 14.8 54.4 -6.4 -60.8 120 29 20 36 46 20 39 50 J1243+4043 06 20 54 16.2 51.8 -6.4 -61.5 50 29 20 39 45 20 51 20 --- 06 32 26 18.1 52.8 -6.2 -63.1 690 41 20 39 46 20 51 50 J1243+4043 06 32 56 18.2 52.9 -6.2 -63.1 24 41 20 51 45 21 03 20 --- 06 44 28 20.2 53.9 -6.0 -64.7 690 52 20 51 46 21 04 20 J1242+3751 06 45 28 19.3 56.8 -6.0 -64.0 50 52 21 04 15 21 06 20 =1240+381 06 47 29 19.6 57.0 -5.9 -64.3 120 54 21 04 16 21 07 20 J1243+4043 06 48 29 20.9 54.2 -5.9 -65.2 50 54 21 07 15 21 18 50 --- 07 00 01 22.9 55.2 -5.7 -66.7 690 65 21 07 16 21 19 20 J1243+4043 07 00 31 22.9 55.2 -5.7 -66.8 24 65 21 19 15 21 30 50 --- 07 12 03 25.0 56.2 -5.5 -68.3 690 76 21 19 16 21 31 50 J1242+3751 07 13 03 24.2 59.3 -5.5 -67.3 50 76 21 31 45 21 33 50 =1240+381 07 15 03 24.6 59.4 -5.5 -67.6 120 78 21 31 46 21 38 00 4C39.25 07 19 14 63.1 65.8 -2.1 -95.1 165 78 21 37 55 21 43 00 --- 07 24 15 64.0 65.6 -2.1 -96.1 300 83 21 37 56 21 47 10 J1243+4043 07 28 25 27.9 57.4 -5.3 -70.4 167 83 21 47 05 21 58 40 --- 07 39 57 29.9 58.2 -5.1 -71.9 690 94 21 47 06 Schedule for VLBA_KP (Code Kp ) 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 59 10 J1243+4043 07 40 27 30.0 58.2 -5.1 -72.0 24 94 21 59 05 22 10 40 --- 07 51 59 32.1 59.0 -4.9 -73.5 690 106 21 59 06 22 11 40 J1242+3751 07 52 59 31.6 62.4 -4.8 -72.0 50 106 22 11 35 22 13 40 =1240+381 07 55 00 32.0 62.5 -4.8 -72.2 120 108 22 11 36 22 14 40 J1243+4043 07 56 00 32.9 59.2 -4.8 -74.0 50 108 22 14 35 22 26 10 --- 08 07 32 35.0 59.9 -4.6 -75.5 690 119 22 14 36 22 26 40 J1243+4043 08 08 02 35.1 60.0 -4.6 -75.5 24 119 22 26 35 22 38 10 --- 08 19 34 37.2 60.6 -4.4 -77.0 690 130 22 26 36 22 39 10 J1242+3751 08 20 34 36.9 64.2 -4.4 -75.2 50 130 22 39 05 22 41 10 =1240+381 08 22 34 37.3 64.3 -4.3 -75.4 120 132 22 39 06 22 42 10 J1243+4043 08 23 34 37.9 60.8 -4.3 -77.6 50 132 22 42 05 22 53 40 --- 08 35 06 40.1 61.4 -4.2 -79.1 690 143 22 42 06 22 54 10 J1243+4043 08 35 36 40.2 61.4 -4.1 -79.2 24 143 22 54 05 23 05 40 --- 08 47 08 42.3 61.9 -4.0 -80.7 690 154 22 54 06 23 06 40 J1242+3751 08 48 08 42.2 65.8 -3.9 -78.4 49 154 23 06 35 23 08 40 =1240+381 08 50 09 42.6 65.9 -3.9 -78.6 120 156 23 06 36 23 09 40 J1243+4043 08 51 09 43.1 62.1 -3.9 -81.2 49 156 23 09 35 23 21 10 --- 09 02 41 45.2 62.5 -3.7 -82.8 690 168 23 09 36 23 21 40 J1243+4043 09 03 11 45.3 62.5 -3.7 -82.9 24 168 23 21 35 23 33 10 --- 09 14 43 47.5 62.9 -3.5 -84.5 690 179 23 21 36 23 34 10 J1242+3751 09 15 43 47.5 67.2 -3.5 -81.7 49 179 23 34 05 23 36 10 =1240+381 09 17 43 47.9 67.2 -3.4 -81.9 120 181 23 34 06 23 37 10 J1243+4043 09 18 43 48.2 63.0 -3.4 -85.1 49 181 23 37 05 23 48 40 --- 09 30 15 50.4 63.2 -3.2 -86.8 690 192 23 37 06 --- Start: Wed 8 Jun 2011 Day 159 -- Stop: Thu 9 Jun 2011 Day 160 --- 23 49 10 J1243+4043 09 30 45 50.5 63.2 -3.2 -86.9 24 192 23 49 05 00 00 40 --- 09 42 17 52.7 63.3 -3.0 -88.7 690 203 23 49 06 00 01 40 J1242+3751 09 43 17 53.0 68.1 -3.0 -85.2 49 203 00 01 35 00 03 40 =1240+381 09 45 18 53.3 68.2 -3.0 -85.4 120 205 00 01 36 Schedule for VLBA_KP (Code Kp ) 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 ---------------------------------------------------------------------------------------- --- Thu 9 Jun 2011 Day 160 --- 00 04 40 J1243+4043 09 46 18 53.5 63.4 -3.0 -89.3 49 205 00 04 35 00 16 10 --- 09 57 50 55.7 63.3 -2.8 -91.2 690 217 00 04 36 00 16 40 J1243+4043 09 58 20 55.7 63.3 -2.8 -91.3 24 217 00 16 35 00 28 10 --- 10 09 52 57.9 63.2 -2.6 -93.3 690 228 00 16 36 00 29 10 J1242+3751 10 10 52 58.4 68.6 -2.5 -89.0 48 228 00 29 05 00 31 10 =1240+381 10 12 52 58.8 68.6 -2.5 -89.3 120 230 00 29 06 00 36 10 3C345 10 17 53 15.4 52.4 -6.4 -61.0 202 230 00 36 05 00 41 10 --- 10 22 54 16.3 52.9 -6.3 -61.7 300 235 00 36 06 00 46 10 J1243+4043 10 27 55 61.3 62.6 -2.3 -96.7 201 235 00 46 05 00 57 40 --- 10 39 27 63.5 61.9 -2.1 -99.2 690 246 00 46 06 00 58 10 J1243+4043 10 39 57 63.6 61.9 -2.1 -99.3 24 246 00 58 05 01 09 40 --- 10 51 29 65.8 61.0 -1.9 -102.0 690 257 00 58 06 01 10 40 J1242+3751 10 52 29 66.6 67.9 -1.8 -96.1 47 257 01 10 35 01 12 40 =1240+381 10 54 29 67.0 67.7 -1.8 -96.5 120 259 01 10 36 01 13 40 J1243+4043 10 55 29 66.5 60.6 -1.8 -103.1 47 259 01 13 35 01 25 10 --- 11 07 01 68.6 59.1 -1.6 -106.3 690 270 01 13 36 01 25 40 J1243+4043 11 07 31 68.7 59.0 -1.6 -106.4 24 270 01 25 35 01 37 10 --- 11 19 03 70.8 57.0 -1.4 -110.2 690 282 01 25 36 01 38 10 J1242+3751 11 20 03 72.0 65.4 -1.4 -102.6 46 282 01 38 05 01 40 10 =1240+381 11 22 04 72.4 65.1 -1.4 -103.2 120 284 01 38 06 01 46 10 J1243+4043 11 28 05 72.4 55.0 -1.3 -113.6 346 284 01 46 05 01 55 10 --- 11 37 06 73.9 52.5 -1.1 -117.5 540 292 01 46 06 01 55 40 J1243+4043 11 37 36 74.0 52.3 -1.1 -117.7 24 292 01 55 35 02 04 50 --- 11 46 48 75.5 49.0 -1.0 -122.4 550 301 01 55 36 02 05 50 J1242+3751 11 47 48 77.2 59.1 -0.9 -113.0 45 301 02 05 45 02 07 50 =1240+381 11 49 48 77.6 58.3 -0.9 -114.0 120 303 02 05 46 02 08 50 J1243+4043 11 50 48 76.1 47.3 -0.9 -124.7 44 303 02 08 45 02 17 20 --- 11 59 20 77.4 43.0 -0.8 -130.3 510 312 02 08 46 02 17 50 J1243+4043 11 59 50 77.5 42.7 -0.7 -130.6 24 312 02 17 45 02 26 20 --- 12 08 21 78.7 37.3 -0.6 -137.3 510 320 02 17 46 Schedule for VLBA_KP (Code Kp ) 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 27 20 J1242+3751 12 09 21 80.9 47.8 -0.6 -127.3 44 320 02 27 15 02 29 20 =1240+381 12 11 22 81.2 46.2 -0.5 -129.2 120 322 02 27 16 02 30 20 J1243+4043 12 12 22 79.2 34.3 -0.5 -140.9 44 322 02 30 15 02 38 50 --- 12 20 53 80.1 26.9 -0.4 -149.6 510 330 02 30 16 02 39 20 J1243+4043 12 21 23 80.1 26.4 -0.4 -150.1 24 330 02 39 15 02 47 50 --- 12 29 55 80.8 17.6 -0.2 -160.3 510 339 02 39 16 02 48 50 J1242+3751 12 30 55 83.6 22.9 -0.2 -155.3 46 339 02 48 45 02 50 50 =1240+381 12 32 55 83.8 19.5 -0.2 -158.9 120 341 02 48 46 02 55 40 3C345 12 37 46 40.6 62.7 -4.1 -78.8 193 341 02 55 35 03 00 00 --- 12 42 07 41.4 62.9 -4.0 -79.4 260 345 02 55 36 03 02 30 J1243+4043 12 44 37 81.3 -0.1 0.0 179.8 61 345 03 02 25 03 14 00 --- 12 56 09 81.0 -14.2 0.2 164.0 690 356 03 02 26 03 14 30 J1243+4043 12 56 39 80.9 -14.8 0.2 163.4 24 356 03 14 25 03 26 00 --- 13 08 11 80.1 -27.0 0.4 149.5 690 367 03 14 26 03 26 50 J1242+3751 13 09 01 82.2 -40.2 0.4 136.1 33 367 03 26 45 03 28 50 =1240+381 13 11 01 81.9 -42.2 0.5 133.8 120 369 03 26 46 03 29 50 J1243+4043 13 12 02 79.7 -30.5 0.5 145.4 43 369 03 29 45 03 41 20 --- 13 23 33 78.3 -39.3 0.7 134.9 690 380 03 29 46 03 41 50 J1243+4043 13 24 04 78.2 -39.6 0.7 134.5 24 380 03 41 45 03 53 20 --- 13 35 35 76.5 -46.1 0.9 126.3 690 392 03 41 46 03 54 10 J1242+3751 13 36 26 77.7 -58.1 0.9 114.3 33 392 03 54 05 03 56 10 =1240+381 13 38 26 77.3 -58.8 0.9 113.3 120 394 03 54 06 03 57 10 J1243+4043 13 39 26 75.9 -47.8 0.9 124.0 44 394 03 57 05 04 08 40 --- 13 50 58 74.1 -52.2 1.1 117.9 690 405 03 57 06 04 09 10 J1243+4043 13 51 28 74.0 -52.4 1.1 117.7 24 405 04 09 05 04 20 40 --- 14 03 00 72.0 -55.5 1.3 112.7 690 416 04 09 06 04 21 30 J1242+3751 14 03 50 72.6 -64.9 1.3 103.5 35 416 04 21 25 04 23 30 =1240+381 14 05 50 72.2 -65.2 1.4 102.9 120 418 04 21 26 04 24 30 J1243+4043 14 06 51 71.3 -56.4 1.4 111.3 46 418 04 24 25 04 36 00 --- 14 18 22 69.3 -58.6 1.6 107.4 690 429 04 24 26 Schedule for VLBA_KP (Code Kp ) 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 36 30 J1243+4043 14 18 52 69.2 -58.6 1.6 107.2 24 429 04 36 25 04 48 00 --- 14 30 24 67.1 -60.2 1.8 103.9 690 441 04 36 26 04 48 50 J1242+3751 14 31 15 67.2 -67.7 1.8 96.7 37 441 04 48 45 04 50 50 =1240+381 14 33 15 66.8 -67.8 1.8 96.3 120 443 04 48 46 04 55 10 3C345 14 37 36 63.5 63.9 -2.1 -97.3 154 443 04 55 05 05 00 00 --- 14 42 26 64.4 63.7 -2.0 -98.3 290 447 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: 12 Station: VLBA_KP 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: 13 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