! BE001 example of 3C84 observations at 6 and 4 cm. ! ! This example shows many things in gory detail and has ! many comments. The example manual_2.key used to be the ! exact same schedule, but takes advantage of SCHED defaults ! and is missing most comments. It looks much less ! intimidating and is closer to what users will actually ! make. ! ! Manual_1.key was changed from legacy recording system ! to the wide band RDBE and WIDAR systems with the DDC ! personality on Nov. 1, 2012 RCW. For now, it differs ! from Manual_2.key which is still for the legacy system ! and has had the GBT swapped for the VLA which cannot ! do legacy style observations. ! ! ========================================================== ! ================= Cover Information ==================== ! ========================================================== version = 1 expt = 'Example: 3C84 6, and 4 cm' expcode = BE001 obstype = VLBA piname = 'Craig Walker' address1 = 'National Radio Astronomy Observatory' address2 = 'P. O. Box O' address3 = 'Socorro, New Mexico, 87801' address4 = ' U.S.A. ' phone = '505 835 7247 ' obsphone = '505 835 7247 ' email = 'cwalker@nrao.edu' fax = '505 835 7027 ' obsmode = 'Continuum' correl = 'Socorro' note1 = ' ' ! ========================================================== ! ============== Correlator Information ================== ! ========================================================== correl = 'Socorro' coravg = 4 corchan = 256 cornant = 11 corpol = 'on' corwtfn = 'uniform' corsrcs = 'Sched' cortape = FTP corship1 = 'Craig Walker' corship2 = 'P. O. Box O' corship3 = 'Socorro NM 87801' cornote1 = ' ' ! ! ========================================================== ! ================== Program control ===================== ! ========================================================== ! Allow SCHED to overwrite existing files. This is useful especially ! when testing the schedule. If you don't want to risk overwriting ! the output, don't set it. This could be true if there were some ! hand editing after running SCHED: overwrit ! To process only VLBA and VLA stations, uncomment: ! dosta 'vl' ! Set the items to appear in the summary tables. Two will be processed ! at a time. sumitem = ela, early, dwell, disk ! ========================================================== ! ==================== Station Catalog ==================== ! ========================================================== ! For this example, to show the format, get 2 stations from the ! internal station catalog. Get the rest from the standard catalog. ! Note that any stations here must have their positions here and ! not depend on the locations file. Normally accurate positions ! would be in XYZ, but for a new station, or for configuration ! searches, Elev/Long/Lat might be more convenient. stacat / STATION=VLBA_PT STCODE=Pt CONTROL=VLBA AXISOFF= 2.1370 X= -1640953.8646 Y= -5014816.0199 Z= 3575411.8106 DXDT= -0.01465 DYDT= -0.00014 DZDT= -0.00559 EPOCH=54466 FRAME='GSFC April 26, 2011: 2011A' MOUNT=ALTAZ AX1LIM=-90,450 AX2LIM=2.25,90 AX1RATE=82.3 AX2RATE=29.3 AX1ACC=0.75 AX2ACC=0.25 TSETTLE=6 DAR=RDBE2 NBBC=16 ! RECORDER=VLBA NDRIVES=2 NHEADS=1 DISK=MARK5C MEDIADEF=DISK TSCAL=CONT ! PT From 150 K Ts line by Beasley and Medcalf Aug 1992. HOR_AZ = 0, 5, 60, 65, 70, 75, 80, 85,165,170,180,185,190,195, 200,240,245,250,255,265,270,275,280,285,360 HOR_EL = 2, 2, 2, 3, 3, 2, 3, 2, 2, 3, 3, 4, 4, 3, 4, 4, 3, 4, 3, 3, 4, 3, 3, 2, 2 / STATION=VLA1 STCODE=Y CONTROL=VEX ! The coordinates are for pad E8 which will often, but not always, ! be the one used. At 7mm, some other pad must be used because ! antenna 9, on pad E8, does not have a receiver. AXISOFF= 0.0000 X= -1600801.8818 Y= -5042219.0267 Z= 3554706.1834 DXDT= -0.01461 DYDT= 0.00088 DZDT= -0.00636 EPOCH=54466 FRAME='VLA antenna data Sep. 28, 2011 adjusted to N8 from gsfc2011a.' MOUNT=ALTAZ AX1LIM=-85,445 AX2LIM=8,90 AX1RATE=40 AX2RATE=20 AX1ACC=2.2 AX2ACC=2.2 ! Broilo Dec. 5, 2005 TSETTLE = 15 DAR=WIDAR NBBC=4 DISK=MARK5C MEDIADEF=DISK TSCAL=CONT HOR_AZ = 0,360 HOR_EL = 8,8 ! Horizon not blocked to El limit. / endcat / ! Get most stations from the catalog. stafile = $SCHED/catalogs/stations_RDBE.dat ! ========================================================== ! ==================== Source Catalog ===================== ! ========================================================== ! Get the sources from the imbedded catalog. ! Normally most would be from $SCHED/catalogs/sources.gsfc or ! sources.rfc. srccat / equinox='J2000' source='J2253+1608','3C454.3' calcode = 'V' ra=22:53:57.74790 dec=16:08:53.5630 / source='0309+411' calcode = 'N' ra=03:13:01.96212 dec=41:20:01.1841 / source='0316+413','3C84' calcode = 'V' ra=03:19:48.16010 dec=41:30:42.1060 / source='0552+398','DA193' calcode = 'N' ra=05:55:30.80561 dec=39:48:49.1656 / source='J1229+0203','3C273' calcode = 'V' ra=12:29:06.69970 dec=02:03:08.5980 / endcat / srcfile = none ! ========================================================== ! ==================== Setup Information =================== ! ========================================================== ! Now specify the setup information. These are adapted from ! the ones in example vladdc.key. They use 4 channels of 128 MHz ! bandwidth each for 2 Gbps total bit rate. ! The second is 4 cm. ! The second setup defaults more parameters than the first and ! shows all that a user is really required to provide if the desired ! frequency is included in the frequency catalog. ! Note, here is where VLA1 and VLA27 are different - they have ! different rchan and lchan. To avoid errors, do not use a ! generic "VLA". The switch to the WIDAR correlator will cause ! most VLA information to change in the future. ! Sched will look for matching sets in the frequency file, but ! that defaults to freq.dat - the one for the legacy system. freqfile = '$SCHED/catalogs/freq_RDBE.dat' setini = v6cm.set / dbe = 'rdbe_ddc' band = '6cm' nchan = 4 bits = 2 bbfilt = 128.0, 128.0, 128.0, 128.0 sideband = U, U, U, U netside = U, U, U, U ifchan = A, C, A, C firstlo = 4100.0 bbsyn = 768.25, 768.25, 896.25, 896.25 pcal = '1MHz' station = vlba / pcal = off ifchan = A, C, B, D fe = '6cm', '6cm', '6cm', '6cm' pol = rcp, lcp, rcp, lcp dbe = widar station = vla1 / endset / setini = v4cm.set / ! This will use a high side first LO and will put both channels ! in the 256 MHz wide central output of the initial RDBE polyphase ! filter output. Get some stuff from freq_RDBE.dat. station = vlba dbe = 'rdbe_ddc' pcal = '1MHz' band = '6cm' nchan = 4 bits = 2 pol = dual bbfilt = 128.0, 128.0, 128.0, 128.0 netside = U freqref = 8504.25 freqoff = 0.0, 0.0, 128.0, 128.0 / ! There are no freq_RDBE.dat entries yet, so make sure all is ! specified. pcal = off ifchan = A, C, B, D firstlo = 9400.0 fe = '4cm', '4cm', '4cm', '4cm' sideband = L pol = rcp, lcp, rcp, lcp station = vla1 dbe = widar / endset / ! ========================================================== ! ================= Initial Scan Information ============= ! ========================================================== ! Scheduled project time is 1995 Oct 22 from 01:30 to 16 UT. ! Set the start time. The day is for the scan stop time. year = 1995 month = 10 day = 22 start = 01:30:00 ! ========================================================== ! ======================== The Scans ===================== ! ========================================================== ! Note that this is a moderately complex schedule, but ! serves to show a number of points about scheduling style. ! Start with a fringe finder on all antennas at both frequencies. ! The dwell time on the second scan tells SCHED to insert enough ! of a gap between the scans for the antennas to get to the source. ! The VLA will be in single dish mode 'VS' for the whole project. stations = VLBA_SC, VLBA_HN, VLBA_NL, VLBA_FD, VLBA_LA, VLBA_PT, VLBA_KP, VLBA_OV, VLBA_BR, VLBA_MK, VLA1 vlamode = vs Source = 3C454.3 Dur = 5:30 Setup = v6cm.set / Source = 3C454.3 Dwell = 5:30 Setup = v4cm.set / ! Now observe the target source, 3C84, along with a short scan on a ! nearby source for use as a position reference at 4 cm. ! Each 13+ minute group includes 13 minutes recording, 2 minute gap, ! and a few tens of seconds for slews. ! The 2 minute gap at the start allows time for readback tests. ! Leave out VLBA_MK for 3 hours because the source is not up. ! The capability to not wait for the last stations to get to source ! with dwell scheduling is demonstrated stations = VLBA_SC, VLBA_HN, VLBA_NL, VLBA_FD, VLBA_LA, VLBA_PT, VLBA_KP, VLBA_OV, VLBA_BR, VLA1 group 4 rep 14 ! About 3 hours in 14 repeats of the next 4 scans. Source = 3C84 Dur = 3:00 gap = 2:00 Setup = v6cm.set / Source = 3C84 Dwell = 3:00 gap = 0 Setup = v4cm.set / Source = 0309+411 Dwell = 2:00,1 / Source = 3C84 Dwell = 3:00,3 / ! Add in VLBA_MK (It would have been ok to leave it in.) stations = VLBA_SC, VLBA_HN, VLBA_NL, VLBA_FD, VLBA_LA, VLBA_PT, VLBA_KP, VLBA_OV, VLBA_BR, VLBA_MK, VLA1 Source = DA193 dwell = 2:00,3 Setup = v6cm.set / group 4 rep 14 ! About 3 hours. Source = 3C84 Dur = 3:00 gap = 2:00 Setup = v6cm.set / Source = 3C84 Dwell = 3:00,2 gap = 0 Setup = v4cm.set / Source = 0309+411 Dwell = 2:00,2 / Source = 3C84 Dwell = 3:00 / ! Now a good calibrator is available. Get some scans on it along ! with the 3C84 stuff. Combine two 15 minute blocks into a loop. group 8 rep 15 ! About 6.5 hours Source = 3C84 Dur = 3:00 gap = 3:00 Setup = v6cm.set / Source = 0552+398 Dwell = 3:00,1 gap = 0 / Source = 0552+398 Dwell = 2:00,1 gap = 0 Setup = v4cm.set / Source = 3C84 Dwell = 3:00,1 gap = 0 / Source = 3C84 Dur = 3:00 gap = 2:00 Setup = v6cm.set / Source = 3C84 Dwell = 3:00,1 gap = 0 Setup = v4cm.set / Source = 0309+411 Dwell = 2:00,1 / Source = 3C84 Dwell = 3:00,1 / ! Finish with another strong fringe finder. Source = 3C273 Dur = 5:30 gap = 3:00 Setup = v6cm.set / Source = 3C273 Dwell = 5:30 gap = 0:00 Setup = v4cm.set / ! ========================================================== ! ======================== End of example ================ ! ==========================================================