  COVER INFORMATION 

 Station:    VLBA_FD   (Code Fd ) 
 Experiment: GV016 - Shroud around NGC 1052 - OH
 Exp. Code:  GV016   


Schedule Version:       1.01                                              
Processed by SCHED version: Release of 02 July 2002                       

PI:       Rene Vermeulen                                                  

Address:  ASTRON/NFRA                                                     
          P.O. Box 2                                                      
          NL-7990 AA Dwingeloo                                            
          The Netherlands                                                 

Phone:    +31 (521) 595 262                                               
EMAIL:    rvermeulen@nfra.nl                                              
Fax:      +31 (521) 597 332                                               
Phone during observation: as above or +31 (528) 232612 (home)             

Observing mode: 128 Mb/s, 4x 8 MHz BBC: RCP+LCP OH1665+7 and OH1720 lines 

Notes:    PHASE CAL must be OFF                                           
                                                                          
                                                                          
                                                                          

Schedule for VLBA_FD   (Code Fd )                                   Page   2
               GV016 - Shroud around NGC 1052 - OH
  UP:  D => Below limits;  H => Below horizon mask.  blank => Up.
  Early: Seconds between end of slew and start.   Dwell: On source seconds. 
  Tapes: Drive, Index, Start footage / Direction, Head Group, End footage.
  TPStart:  Tape motion start time.  Frequencies are LO sum (band edge).
----------------------------------------------------------------------------------------
Start UT  Source               Start / Stop                 Early    Tapes      TPStart
Stop UT                  LST      EL    AZ   HA  UP   ParA  Dwell  (see above)
----------------------------------------------------------------------------------------

 --- Mon  18 Nov 2002   Day 322 ---

 Next scan frequencies:  1653.61  1653.61  1707.48  1707.48
 Next BBC frequencies:    746.39   746.39   692.52   692.52
 Next scan bandwidths:      8.00     8.00     8.00     8.00

23 31 00  3C454.3      20 26 34  53.4 104.8 -2.5     -60.0     0   1  1      0  23 31 00
23 42 00  ---          20 37 35  55.7 107.1 -2.3     -58.9   660   F  1   4400

 --- Start: Mon  18 Nov 2002   Day 322 -- Stop: Tue  19 Nov 2002   Day 323 ---

23 46 00  NGC1052      20 41 36  -4.1  97.2 -6.0  D  -59.6   127   1  1   4400  23 46 00
00 19 00  ---          21 14 41   2.9 101.4 -5.4  H  -58.5     0   F  1  17600

00 23 00  3C454.3      21 18 42  63.9 118.2 -1.6     -52.1   112   1  2  17600  00 23 00
00 34 00  ---          21 29 44  65.9 122.1 -1.4     -49.3   660   R  1  13200

00 38 00  3C84         21 33 45  22.1  53.8 -5.8     -68.0   146   1  2  13200  00 38 00
00 49 00  ---          21 44 46  24.0  54.6 -5.6     -69.5   660   R  1   8800

00 52 00  NGC1052      21 47 47   9.8 105.8 -4.9     -56.8   140   1  2   8800  00 52 00
01 14 00  ---          22 09 50  14.4 108.9 -4.5     -55.3  1320   R  1      0

01 16 00  NGC1052      22 11 51  14.8 109.2 -4.5     -55.2   113   1  3      0  01 16 00
02 00 00  ---          22 55 58  23.5 116.1 -3.8     -51.3  2640   F  1  17600

02 02 00  NGC1052      22 57 58  23.9 116.4 -3.7     -51.1   113   1  4  17600  02 02 00
02 46 00  ---          23 42 06  32.1 124.6 -3.0     -45.7  2640   R  1      0

02 49 00  3C84         23 45 06  46.0  60.3 -3.6     -86.4   131   1  5      0  02 49 00
03 22 00  ---          00 18 11  52.2  60.4 -3.0     -91.7  1980   F  1  13200

03 25 00  DA193        00 21 12  23.6  56.4 -5.6     -68.9   117   1  5  13200  03 25 00
03 36 00  ---          00 32 14  25.5  57.2 -5.4     -70.3   660   F  1  17600

03 39 00  NGC1052      00 35 14  40.8 136.9 -2.1     -36.4   121   1  6  17600  03 39 00
04 23 00  ---          01 19 22  46.4 149.9 -1.4     -25.9  2640   R  1      0

04 25 00  NGC1052      01 21 22  46.7 150.5 -1.3     -25.3   114   1  7      0  04 25 00
05 09 00  ---          02 05 29  50.2 166.1 -0.6     -12.0  2640   F  1  17600

05 11 00  NGC1052      02 07 29  50.3 166.9 -0.6     -11.4   113   1  8  17600  05 11 00
05 55 00  ---          02 51 37  51.0 184.1  0.2       3.6  2640   R  1      0
Schedule for VLBA_FD   (Code Fd )                                   Page   3
               GV016 - Shroud around NGC 1052 - OH
  UP:  D => Below limits;  H => Below horizon mask.  blank => Up.
  Early: Seconds between end of slew and start.   Dwell: On source seconds. 
  Tapes: Drive, Index, Start footage / Direction, Head Group, End footage.
  TPStart:  Tape motion start time.  Frequencies are LO sum (band edge).
----------------------------------------------------------------------------------------
Start UT  Source               Start / Stop                 Early    Tapes      TPStart
Stop UT                  LST      EL    AZ   HA  UP   ParA  Dwell  (see above)
----------------------------------------------------------------------------------------

 --- Tue  19 Nov 2002   Day 323 ---

05 57 00  NGC1052      02 53 37  51.0 184.9  0.2       4.2   113   1  9      0  05 57 00
06 41 00  ---          03 37 44  48.8 201.5  0.9      18.6  2640   F  1  17600

06 43 00  NGC1052      03 39 45  48.7 202.2  1.0      19.2   114   1 10  17600  06 43 00
07 27 00  ---          04 23 52  44.0 216.6  1.7      31.2  2640   R  1      0

07 29 00  NGC1052      04 25 52  43.7 217.1  1.7      31.7   113   1 11      0  07 29 00
08 13 00  ---          05 09 59  37.3 228.7  2.5      40.8  2640   F  1  17600

08 15 00  NGC1052      05 12 00  36.9 229.2  2.5      41.2   113   1 12  17600  08 15 00
08 59 00  ---          05 56 07  29.3 238.5  3.2      47.8  2640   R  1      0

09 01 00  NGC1052      05 58 07  28.9 238.9  3.3      48.1   113   1 13      0  09 01 00
09 45 00  ---          06 42 14  20.5 246.5  4.0      52.9  2640   F  1  17600

09 48 00  3C84         06 45 15  47.8 299.6  3.4      87.9   119   1 14  17600  09 48 00
10 32 00  ---          07 29 22  39.6 300.7  4.2      81.3  2640   R  1      0


SETUP FILE INFORMATION:
   NOTE: If DOPPLER, FREQ, or BW were used, see the individual scans for the final BBC settings.


 Setup file: gv016.set
   Matches group v20cm_2 in ./gv016_freq.dat
    FD filtered above 1760.  SC filtered above 1740.

   Setup group:    8         Station: VLBA              Total bit rate:  128
   Format: VLBA1:4           Bits per sample: 2         Sample rate: 16.000
   Number of channels:  4    Passes/head pos:   1       Speedup factor:   2.00

   Tape speeds: Low density - 133.330 ips,  High density -  80.00 ips
   Time per pass for  17600 ft, High density tapes is: 00:44:00

   1st LO=   2400.00   2400.00   2400.00   2400.00
   Net SB=         U         U         U         U
   Pol.  =      RCP       LCP       RCP       LCP 
   BBC   =         1         2         3         4
   BBC SB=         L         L         L         L
   IF    =        A         C         A         C 

   VLBA FE=     20cm     omit     20cm     omit
   VLBA Synth=  15.4      2.4     15.4

  The following frequency sets based on this setup were used.

  Frequency Set:   8  Based on FREQ, BW, and/or DOPPLER in schedule.  Used pcal sets:   1
   LO sum=    1653.61   1653.61   1707.48   1707.48
   BBC fr=     746.39    746.39    692.52    692.52
   Bandwd=      8.000     8.000     8.000     8.000

  The following pulse cal sets were used with this setup:

   Pulse cal detection set:   1  PCAL = OFF 
    PCALXB1=   S1    S2    S3    S4    OFF   OFF   OFF   OFF
    PCALXB2=   M1    M2    M3    M4    OFF   OFF   OFF   OFF
    PCALFR1=     0     0     0     0     0     0     0     0
    PCALFR2=     0     0     0     0     0     0     0     0

   Track assignments are: 
    track1=   2, 18,  3, 19
    barrel=roll_off 
 SOURCE LIST -- GV016 - Shroud around NGC 1052 - OH
     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).

   Source                         Source position (RA/Dec) 
                        (B1950)           (J2000)           (Date) 

 * NGC1052           02 38 37.351712   * 02 41 04.798288     02 41 13.580215 
                    -08 28 08.91956    *-08 15 20.75075     -08 14 36.48232 
                     From catalog imbedded in main SCHED input file.

 * 3C84              03 16 29.567262   * 03 19 48.160092     03 19 59.900740 
                     41 19 51.91671    * 41 30 42.10384      41 31 22.63194 
                     From catalog imbedded in main SCHED input file.

 * DA193             05 52 01.407167   * 05 55 30.805609     05 55 42.932015 
                     39 48 21.94585    * 39 48 49.16500      39 48 50.26992 
                     From catalog imbedded in main SCHED input file.

 * 3C454.3           22 51 29.519732   * 22 53 57.747931     22 54 05.548572 
                     15 52 54.34814    * 16 08 53.56097      16 09 51.13528 
                     From catalog imbedded in main SCHED input file.



  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) 
   NGC1052            149.1
   3C84               157.6
   DA193              143.9
   3C454.3            113.1

  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 

