COVER INFORMATION Station: GBTS (Code Gt ) Experiment: Maser imaging Exp. Code: GA037B Schedule Version: 1.00 Processed by SCHED version: 11.40 Release 11.4. March 14, 2015 PI: Alexei Alakoz Address: ASC Lebedev Profsoyuznaya 84/32 117997 Moscow, Russia Phone: +7-495-3332167 EMAIL: alexey.alakoz@gmail.com Fax: +7-495-3332378 Phone during observation: +7-916-5452842 Observing mode: K-band, dual-pol Notes: K-band, Radioastron-compatible frequency setup P-CAL is OFF, Tsys is ON auto-level (AGC) is ON Please, send Mk5 disk packs to JIVE COVER LETTER: Project: Tracing micro-structures of H2O masers with ultimate angular resolution RadioAstron-EVN out of session observations of W51 M/S K-band, dual-polarization Observational code: rags15b (RadioAstron), GA037B (ground) Proposals: RA-AO3-02; GA037; Task: Maser imaging Start(UT): 08.10.2015 15:00:00 Stop(UT) : 09.10.2015 00:00:00 Band: KK Pcal: OFF, noise diode: ON Source: W51_E8_H2O, 1923+210, 1928+154 GRT: Jb2(K), Ef(K), Nt(K), Sh(K), Ur(K), Tr(K), Ys(K), Ro(K:23:30-02:25), Hh(K) SRT: 15:00-15:10; 15:20-15:50; 19:00-19:40; 19:50-20:00; 22:35-23:25 Comments: 1.7xED PA=29.4 Comments: 22236 MHz Comments: Space Radio Telescope (SRT): Records dual-polarization LSB and USB 16 MHz wide IFs of the central frequency 22236.00 MHz, two IFs per polarization. Bitrate: 128 Mbps (1-bit sampling) Green Bank tracking station is used. Ground: Records dual-polarization LSB and USB 16 MHz wide IFs of the central frequency 22236.00 MHz, two IFs per polarization. Bitrate: 256 Mbps (2-bit sampling) *** Please make sure that PCAL is OFF. Thanks! *** Correlation: This experiment will be correlated by the JIVE-SFXC correlator & ASC correlator. Please, send all the data as disks or e-transfer to JIVE, then data will be forwarded to ASC (Moscow). Alexei Schedule for GBTS (Code Gt ) Page 2 Maser imaging 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 8 Oct 2015 Day 281 --- ---------- The following is to control the Green Bank tracking station recorder ---------- Next scan frequencies: 22236.00 22236.00 22236.00 22236.00 Next BBC frequencies: 736.00 736.00 736.00 736.00 Next scan bandwidths: 16.00 16.00 16.00 16.00 15 00 00 FAKERA 10 48 22 43.3 2.2 -1.2 -160.6 0 0 15 00 00 15 10 00 --- 10 58 24 43.3 1.9 -1.0 -163.3 600 19 15 00 01 ---------- The following is to control the Green Bank tracking station recorder ---------- 15 20 00 FAKERA 11 08 25 43.4 1.6 -0.9 -166.0 580 19 15 20 00 15 30 00 --- 11 18 27 43.4 1.3 -0.7 -168.7 600 38 15 20 01 15 31 00 FAKERA 11 19 27 43.4 1.2 -0.7 -168.9 40 38 15 31 00 15 40 00 --- 11 28 28 43.5 1.0 -0.5 -171.4 540 56 15 31 01 15 41 00 FAKERA 11 29 29 43.5 0.9 -0.5 -171.6 40 56 15 41 00 15 50 00 --- 11 38 30 43.5 0.7 -0.4 -174.1 540 73 15 41 01 ---------- The following is to control the Green Bank tracking station recorder ---------- 19 00 00 FAKERA 14 49 01 42.1 -4.6 2.8 134.9 11380 73 19 00 00 19 10 00 --- 14 59 03 42.0 -4.8 3.0 132.2 600 92 19 00 01 19 11 00 FAKERA 15 00 03 41.9 -4.8 3.0 132.0 40 92 19 11 00 19 20 00 --- 15 09 05 41.8 -5.0 3.1 129.6 540 110 19 11 01 19 21 00 FAKERA 15 10 05 41.8 -5.0 3.2 129.4 40 110 19 21 00 19 30 00 --- 15 19 06 41.6 -5.2 3.3 127.0 540 127 19 21 01 19 31 00 FAKERA 15 20 06 41.6 -5.2 3.3 126.7 40 127 19 31 00 19 40 00 --- 15 29 08 41.4 -5.4 3.5 124.4 540 144 19 31 01 ---------- The following is to control the Green Bank tracking station recorder ---------- 19 50 00 FAKERA 15 39 10 41.3 -5.5 3.6 121.8 580 144 19 50 00 20 00 00 --- 15 49 11 41.1 -5.7 3.8 119.2 600 163 19 50 01 ---------- The following is to control the Green Bank tracking station recorder ---------- 22 35 00 FAKERA 18 24 37 37.7 -6.4 6.4 80.0 9280 163 22 35 00 22 45 00 --- 18 34 38 37.5 -6.3 6.6 77.5 600 183 22 35 01 22 46 00 FAKERA 18 35 38 37.5 -6.3 6.6 77.3 40 183 22 46 00 22 55 00 --- 18 44 40 37.3 -6.3 6.7 75.1 540 200 22 46 01 Schedule for GBTS (Code Gt ) Page 3 Maser imaging 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 8 Oct 2015 Day 281 --- 22 56 00 FAKERA 18 45 40 37.3 -6.3 6.8 74.8 40 200 22 56 00 23 05 00 --- 18 54 42 37.1 -6.2 6.9 72.6 540 217 22 56 01 23 06 00 FAKERA 18 55 42 37.1 -6.2 6.9 72.4 40 217 23 06 00 23 15 00 --- 19 04 43 36.9 -6.1 7.1 70.2 540 235 23 06 01 23 16 00 FAKERA 19 05 43 36.8 -6.1 7.1 70.0 40 235 23 16 00 23 25 00 --- 19 14 45 36.7 -6.0 7.2 67.8 540 252 23 16 01 SETUP FILE INFORMATION: NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings. ======== Setup file: ra1cm2.set --- WARNING --- This group does not match an entry in the frequency catalog. This might be ok because the catalog is not complete. But be very careful to be sure that the setup is correct. Setup group: 10 Station: GBTS Total bit rate: 256 Format: MARK5B Bits per sample: 2 Sample rate: 32.000 Number of channels: 4 DBE type: Speedup factor: 1.00 Disk used to record data. 1st LO= 21500.00 21500.00 21500.00 21500.00 Net SB= U L U L IF SB = U U U U Pol. = LCP LCP RCP RCP BBC = 1 1 2 2 BBC SB= U L U L IF = A A B B The following frequency sets based on these setups were used. Frequency Set: 10 Setup file default. Used with PCAL = off LO sum= 22236.00 22236.00 22236.00 22236.00 BBC fr= 736.00 736.00 736.00 736.00 Bandwd= 16.00 16.00 16.00 16.00 Matching frequency sets: 10 Track assignments are: track1= 2, 4, 6, 8 barrel=roll_off POSITIONS OF SOURCES USED IN RECORDING SCANS Source Source position (RA/Dec) Error (B1950) (J2000) (Date) (mas) * FAKERA 11 57 21.769299 * 12 00 00.000000 12 00 27.840860 0.00 85 16 41.77889 * 85 00 00.00000 84 54 39.41181 0.00 From catalog imbedded in main SCHED input file. fake circumpolar target for a TS to look at * W51_E8_H2O 19 21 26.266096 * 19 23 43.934270 19 24 27.430383 0.00 14 24 34.98638 * 14 30 28.34980 14 32 42.15158 0.00 ./ga037b_sources.radioastron H2O maser; position of the reference maser feature from 2010ApJ720...1055Sato, R * 1928+154 19 28 36.092068 * 19 30 52.766993 19 31 36.000232 0.00 J1930+1532 15 26 11.96581 * 15 32 34.42720 15 34 57.53879 0.00 ./ga037b_sources.radioastron clock offset calibrator for W51_E8, rfc_2013d Petrov, 2013, unpublished 139 obse * 1922+155 19 22 23.129975 * 19 24 39.455869 19 25 22.540606 0.00 J1924+1540 15 34 46.75053 * 15 40 43.94156 15 42 59.24528 0.00 ./ga037b_sources.radioastron phase reference source for W51, rfc_2015c Petrov * 1923+210 19 23 49.792392 * 19 25 59.605355 19 26 40.674741 0.00 J1925+2106 21 00 23.30483 * 21 06 26.16191 21 08 44.60060 0.00 ./ga037b_sources.radioastron AGN, rfc_2013d Petrov, 2013, unpublished 35453 observations, RA-AO3-04 * 0316+413 03 16 29.567283 * 03 19 48.160114 03 20 52.657952 0.00 J0319+4130 41 19 51.91847 * 41 30 42.10559 41 33 57.01230 0.00 3C84 ./ga037b_sources.radioastron AGN, rfc_2013d Petrov, 2013, unpublished 15448 observations, RA-AO3-04, RA-AO2-1 * 2200+420 22 00 39.362504 * 22 02 43.291371 22 03 24.019410 0.00 J2202+4216 42 02 08.59073 * 42 16 39.97987 42 21 34.82854 0.00 BLLAC ./ga037b_sources.radioastron AGN, rfc_2013d Petrov, 2013, unpublished 59417 observations, RA-AO3-04, RA-AO2-1 SOURCE SCAN SUMMARY FOR SOURCES LISTED ABOVE Scan hours are for recording scans only. Baseline hours are only counted for scans above horizon at both ends. Source Setup file Frequency sets Observing hours (duplicates not shown) Scan Baseline FAKERA ra1cm2.set 10 2.183 0.000 W51_E8_H2O ra1cm2.set 1 2 3 4 5 6 7 8 9 3.983 78.251 1928+154 ra1cm2.set 1 2 3 5 6 8 9 0.167 3.500 1922+155 ra1cm2.set 1 2 3 4 5 6 7 8 9 2.033 32.324 1923+210 ra1cm2.set 1 2 3 4 5 6 7 8 9 0.167 6.000 0316+413 ra1cm2.set 1 2 3 5 6 8 9 0.391 4.967 2200+420 ra1cm2.set 1 2 3 4 5 6 7 8 9 0.750 18.461 EFFECT OF SOLAR CORONA 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) FAKERA 91.0 W51_E8_H2O 98.4 1928+154 100.2 1922+155 98.7 1923+210 99.3 0316+413 132.0 2200+420 127.3 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