! Exploratory VLBA proposal
!
! BK151: Exploratory follow up on a serendipitous discovery of
! a lens candidate / Kovalev, McKean, Petrov
!
! CURRENT TIME ALLOCATION:
! 1 times 4.0 hrs centered at 6.5 PT-LST with 256 Mbits/sec recording
!
! Continuum observing at 2, 6, 18 cm, 2 bit sampling
! Polarization required
!
! Fringe finder, cross-fring calibrator, EVPA calibrator: 0923+392
! EVPA calibrator at 18 cm: 1328+307=3C286 (short spacings only)
! Leakedge term calibrators: target(s)
!
! *** TWO CORRELATOR PASSES ARE REQUIRED ***
! VLBA observes using positions of 0633-263.
! Socorro correlator is requested to use positions of
! 0633-26A and 0633-26B for two correlator passes
!
! ================================================================
!   Preferred Dynamic Constraints.  Alter [defaults] as desired.
! ================================================================
! Equipment constraints:
!    Stations.  Below each station code, the "o" indicates an
!       [optional] station that is to be used if it is available.
!       Change "o" to "r" if the station is required or change
!       "o" to "n" if the station is not to be used.
!           SC  HN  NL  FD  LA  PT  KP  OV  BR  MK
!           r   r   r   o   o   o   o   o   r   r
!       Minimum number of stations [9 (6 for 3mm)]: 9
!       May we swap PT for a single VLA antenna? NO
!          Consult http://www.aoc.nrao.edu/~lsjouwer/y1gotcha.html
!          to decide.  If you adopt the default, then both PT and
!          VLA1 must be in the stations list in the keyin file.
!    Bands and polarizations.  Below each band code, insert "R"
!       if the righthand polarization is to be used, "L" if the
!       lefthand polarization is to be used, "d" if dual
!       polarizations are to be used, or "o" if the band is in
!       your setups but scheduling should not be constrained by
!       its availability.
!           90cm  50cm  20cm  13cm  6cm  4cm  2cm  1cm  7mm  3mm
!                       d           d         d     
!
! Weather constraints:
!    Appropriate for bands: all bands marked "d" above
!    and for at least 7 stations
! Date constraints:
!    Preferred date(s), usually a series start [none]: 
!    Preferred interval between segments in days [none]:
!    Special conditions (e.g., a series with different
!       spacings in time): 
! ================================================================

! ================================================================
!       Control Information
! ================================================================
overwrite            ! Prevents need to clean out old files on restart.
autotape = 2         ! Automatic tape allocation on 2 drive stations.
minpause = 30        ! Minimum playback tape stop duration (speedup factor = 1.00 for this exp.)
prestart = 10        ! Start tapes this long before scan start
sumitem  = early, dwell, tpstart, el1 ! Control items in summary file.

! ================================================================
!       Cover information  (PI, experiment ...)
! ================================================================
version  = 1.0
expt     = 'Exploratory follow up on a serendipitous discovery of a lens candidate'
expcode  = 'bk151'
obstype  = 'VLBA'
piname   = 'Yuri Kovalev'
address1 = 'MPIfR'
address2 = 'Auf dem Huegel 69, 53121 Bonn'
address3 = 'Germany'
email    = 'ykovalev@mpifr-bonn.mpg.de'
phone    = '+49-228-525-125 (w) / +49-228-850-7823 (h)'
obsphone = '+49-163-191-9961 (mobile)'
fax      = '+49-228-525-229'
obsmode  = '2, 6, 18 cm continuum with corpol: 256-8-2'
note1    = 'Two correlator passes are required on 0633-26A and 0633-26B'
note2    = 'Fringe finder: 0923+392'
note3    = ''
note4    = ''

! ================================================================
!       Correlator section
! ================================================================
correl   = 'Socorro'
coravg   = 2
corchan  = 16
cornant  = 10
corpol   = 'on'
corwtfn  = 'uniform'
corsrcs  = 'schedule'
cortape  = 'dat/dds3'
corship1 = 'Yuri Kovalev'
corship2 = 'MPIfR'
corship3 = 'Auf dem Huegel 69, 53121 Bonn, Germany'
cornote1 = 'Two passes are requested on 0633-26A and 0633-26B'
cornote2 = 'Fringe finder: 0923+392'

! ================================================================
!       Catalogs.  These are the standard ones and are the defalts.
! ================================================================
! srcfile  = '$SCHED/catalogs/sources.vlba'
stafile  = '$SCHED/catalogs/stations.dat'
freqfile = $SCHED/catalogs/freq.dat

! ================================================================
!       In line source catalog.
! ================================================================
srccat /
equinox=J2000
! 
! A (X-band positions from Petrov, preliminary 2008a_astro):
source='0633-26A', 'J0635-262A'  ra=06:35:20.909020 dec=-26:20:39.87053 rem='preliminary 2008a_astro, Petrov' /
! B (S-band positions from Petrov, preliminary 2008a_astro):
source='0633-26B', 'J0635-262B'  ra=06:35:19.417017 dec=-26:20:55.80641 rem='preliminary 2008a_astro, Petrov' /
! Central position on the object
source='0633-263', 'J0635-2620'  ra=06:35:20.163018 dec=-26:20:47.83847 /
! Fringe finder, EVPA calibrator, amplitude check
source='J0927+3902','0923+392','4C39.25' ra=09:27:03.013935 dec=+39:02:20.85186 rem='2007c_astro Petrov catalog' /
! EVPA calibrator for L (short spacings only)
source='J1331+3030','1328+307','3C286' ra=13:31:08.288048 dec=+30:30:32.95923 rem='2006a_astro Petrov catalog' /
endcat /

! ================================================================
!       The schedule
! ================================================================
lst      = VLBA_PT
day      = 61285
start    = 04:30:00 ! LST

stations = SC, HN, NL, FD, LA, PT, KP, OV, BR, MK

! YYK, REMINDER:
! due to slewing and/or band change, I lose 10-20 seconds for most of the scans.
! I also lose 20-30 seconds per every formatter reconfiguration and/or tape/disk start

! 18,6,2 cm scan in the beginning of the schedule
! for EVPA calibration 0923+392 + amplitudes check + fringe finder
setup =  '$SCHED/setups/v6cm-256-8-2.set'  source = '0923+392'  dwell = 210 gap = 0 record /
setup =  '$SCHED/setups/v2cm-256-8-2.set'  source = '0923+392'  dur   = 300 gap = 0 record /
setup =  '$SCHED/setups/v18cm-256-8-2.set' source = '0923+392'  dur   = 210 gap = 0 record /

setup = '$SCHED/setups/v18cm-256-8-2.set' source = '0633-263' dur = 100 gap = 0 norecord /

! 18,6,2 cm on target
group = 3 repeat = 12
   setup = '$SCHED/setups/v18cm-256-8-2.set' source = '0633-263' dur = 263 gap = 0 record /
   setup = '$SCHED/setups/v2cm-256-8-2.set'  source = '0633-263' dur = 510 gap = 0 record /
   setup = '$SCHED/setups/v6cm-256-8-2.set'  source = '0633-263' dur = 254 gap = 0 record /
      
! 18,6,2 cm scan in the beginning of the schedule
! for EVPA calibration 0923+392 + amplitudes check + fringe finder
setup =  '$SCHED/setups/v6cm-256-8-2.set'  source = '0923+392'  dwell = 210 gap = 0 record /
setup =  '$SCHED/setups/v2cm-256-8-2.set'  source = '0923+392'  dur   = 300 gap = 0 record /
setup =  '$SCHED/setups/v18cm-256-8-2.set' source = '0923+392'  dur   = 210 gap = 0 record /

! 18 cm on 3C286 (short spacings will be used for the EVPA calibration)
setup = '$SCHED/setups/v18cm-256-8-2.set' source = '1328+307'   dwell = 300 gap = 0 record /