  COVER INFORMATION 

 Station:    VLBA_FD   (Code Fd ) 
 Experiment: GL026B VLBA format, 18 cm, Arp 220, Colin Lonsdale, November 2002
 Exp. Code:  GL026B  


Schedule Version:       1.00                                              
Processed by SCHED version: Release of 02 July 2002                       

PI:       Colin Lonsdale                                                  

Address:  MIT Haystack Observatory                                        
          Off Route 40                                                    
          Westford, MA 01886                                              
                                                                          

Phone:    508-692-4764 (work) or 603-672-1268 (home)                      
EMAIL:    cjl@dopey.haystack.edu                                          
Fax:      617-981-0590                                                    
Phone during observation: 508-692-4764 (work) or 603-672-1268 (home)      

Observing mode: 256-8-2                                                   

Notes:    Primary fringe finder 1613+341                                  
                                                                          
                                                                          
                                                                          

Schedule for VLBA_FD   (Code Fd )                                   Page   2
               GL026B VLBA format, 18 cm, Arp 220, Colin Lonsdale, November 2002
  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).
     Automatic tape allocation specified.  Tape positions are just estimates.
----------------------------------------------------------------------------------------
Start UT  Source               Start / Stop                 Early    Tapes      TPStart
Stop UT                  LST      EL    AZ   HA  UP   ParA  Dwell  (see above)
----------------------------------------------------------------------------------------

 --- Sat  16 Nov 2002   Day 320 ---

 Next scan frequencies:  1632.99  1632.99  1640.99  1640.99  1648.99  1648.99
                         1656.99  1656.99
 Next BBC frequencies:    767.01   767.01   759.01   759.01   751.01   751.01
                          743.01   743.01
 Next scan bandwidths:      8.00     8.00     8.00     8.00     8.00     8.00
                            8.00     8.00

12 30 00  1613+341     09 15 52   6.2  53.7 -7.0     -56.9     0   1  1      0  12 30 00
12 36 00  ---          09 21 53   7.3  54.3 -6.9     -57.7   360   F  1   4800

12 36 00  ARP220       09 21 53   9.1  68.0 -6.2     -60.4   -15   1  1   4800  12 36 00
12 52 00  ---          09 37 55  12.3  69.8 -6.0     -61.7   945   F  1  17600

13 00 00  1613+341     09 45 57  11.6  56.9 -6.5     -60.7   465   1  2  17600  13 00 00
13 03 00  ---          09 48 57  12.1  57.2 -6.4     -61.0   180   R  1  15200

13 03 00  ARP220       09 48 57  14.5  71.0 -5.8     -62.5   -15   1  2  15200  13 03 00
13 22 00  ---          10 08 00  18.4  73.1 -5.5     -63.8  1125   R  1      0

13 23 00  ARP220       10 09 01  18.6  73.2 -5.4     -63.9    54   1  3      0  13 23 00
13 45 00  ---          10 31 04  23.2  75.5 -5.1     -65.3  1320   F  1  17600

13 47 00  ARP220       10 33 05  23.6  75.7 -5.0     -65.4   113   1  4  17600  13 47 00
14 09 00  ---          10 55 08  28.3  78.0 -4.7     -66.6  1320   R  1      0

14 11 00  ARP220       10 57 08  28.7  78.2 -4.6     -66.7   113   1  5      0  14 11 00
14 33 00  ---          11 19 12  33.3  80.5 -4.3     -67.7  1320   F  1  17600

14 40 00  1516+193     11 26 13  37.1  87.8 -3.8     -65.8   406   1  6  17600  14 40 00
14 43 00  ---          11 29 14  37.8  88.1 -3.8     -65.8   180   R  1  15200

14 43 00  ARP220       11 29 14  35.5  81.5 -4.1     -68.1   -11   1  6  15200  14 43 00
15 02 00  ---          11 48 17  39.5  83.6 -3.8     -68.8  1129   R  1      0

15 05 00  ARP220       11 51 17  40.2  83.9 -3.7     -68.9   173   1  7      0  15 05 00
15 27 00  ---          12 13 21  44.9  86.3 -3.4     -69.4  1320   F  1  17600

15 30 00  ARP220       12 16 21  45.5  86.7 -3.3     -69.5   173   1  8  17600  15 30 00
15 52 00  ---          12 38 25  50.3  89.3 -2.9     -69.7  1320   R  1      0

15 55 00  ARP220       12 41 26  50.9  89.7 -2.9     -69.8   173   1  9      0  15 55 00
16 17 00  ---          13 03 29  55.7  92.6 -2.5     -69.6  1320   F  1  17600
Schedule for VLBA_FD   (Code Fd )                                   Page   3
               GL026B VLBA format, 18 cm, Arp 220, Colin Lonsdale, November 2002
  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).
     Automatic tape allocation specified.  Tape positions are just estimates.
----------------------------------------------------------------------------------------
Start UT  Source               Start / Stop                 Early    Tapes      TPStart
Stop UT                  LST      EL    AZ   HA  UP   ParA  Dwell  (see above)
----------------------------------------------------------------------------------------

 --- Sat  16 Nov 2002   Day 320 ---

16 20 00  1516+193     13 06 30  58.6 102.9 -2.2     -62.8   167   1 10  17600  16 20 00
16 26 00  ---          13 12 31  59.8 104.2 -2.1     -62.2   360   R  1  12800

16 26 00  ARP220       13 12 31  57.6  93.9 -2.4     -69.4   -13   1 10  12800  16 26 00
16 42 00  ---          13 28 33  61.1  96.5 -2.1     -68.8   947   R  1      0

16 45 00  ARP220       13 31 34  61.7  97.0 -2.1     -68.6   173   1 11      0  16 45 00
17 07 00  ---          13 53 37  66.4 101.4 -1.7     -66.9  1320   F  1  17600

17 10 00  ARP220       13 56 38  67.0 102.1 -1.6     -66.5   173   1 12  17600  17 10 00
17 32 00  ---          14 18 41  71.6 108.2 -1.3     -63.0  1320   R  1      0

17 35 00  1613+341     14 21 42  66.2  74.0 -1.9     -90.8   151   1 13      0  17 35 00
17 38 00  ---          14 24 42  66.8  73.9 -1.8     -91.2   180   F  1   2400

17 38 00  ARP220       14 24 42  72.8 110.3 -1.2     -61.6   -30   1 13   2400  17 38 00
17 57 00  ---          14 43 46  76.6 119.0 -0.9     -55.2  1110   F  1  17600

18 00 00  ARP220       14 46 46  77.1 120.7 -0.8     -53.8   173   1 14  17600  18 00 00
18 22 00  ---          15 08 50  80.8 139.2 -0.4     -37.8  1320   R  1      0

-----------  Tape Change ------------

18 40 00  1613+341     15 26 53  79.5  67.1 -0.8    -106.6  1026   2  1      0  18 40 00
18 43 00  ---          15 29 53  80.1  66.0 -0.7    -108.1   180   F  1   2400

18 43 00  ARP220       15 29 53  82.8 170.6 -0.1      -8.8   -76   2  1   2400  18 43 00
19 02 00  ---          15 48 56  82.2 204.2  0.2      22.7  1064   F  1  17600

19 05 00  ARP220       15 51 57  81.9 208.8  0.3      26.9   171   2  2  17600  19 05 00
19 27 00  ---          16 14 00  78.8 232.9  0.6      48.4  1320   R  1      0

19 30 00  ARP220       16 17 01  78.3 235.1  0.7      50.3   172   2  3      0  19 30 00
19 52 00  ---          16 39 04  74.1 247.2  1.1      59.9  1320   F  1  17600

19 55 00  ARP220       16 42 05  73.5 248.5  1.1      60.8   173   2  4  17600  19 55 00
20 17 00  ---          17 04 09  69.0 255.6  1.5      65.3  1320   R  1      0

20 20 00  1613+341     17 07 09  78.2 291.1  0.9     103.9   150   2  5      0  20 20 00
20 23 00  ---          17 10 10  77.6 290.4  0.9     102.8   180   F  1   2400

20 23 00  ARP220       17 10 10  67.7 257.1  1.6      66.1   -28   2  5   2400  20 23 00
20 42 00  ---          17 29 13  63.7 261.2  1.9      68.0  1112   F  1  17600
Schedule for VLBA_FD   (Code Fd )                                   Page   4
               GL026B VLBA format, 18 cm, Arp 220, Colin Lonsdale, November 2002
  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).
     Automatic tape allocation specified.  Tape positions are just estimates.
----------------------------------------------------------------------------------------
Start UT  Source               Start / Stop                 Early    Tapes      TPStart
Stop UT                  LST      EL    AZ   HA  UP   ParA  Dwell  (see above)
----------------------------------------------------------------------------------------

 --- Sat  16 Nov 2002   Day 320 ---

20 45 00  ARP220       17 32 13  63.0 261.8  2.0      68.2   173   2  6  17600  20 45 00
21 07 00  ---          17 54 17  58.3 265.6  2.3      69.3  1320   R  1      0

21 10 00  ARP220       17 57 17  57.7 266.0  2.4      69.4   173   2  7      0  21 10 00
21 32 00  ---          18 19 21  52.9 269.1  2.7      69.7  1320   F  1  17600

21 35 00  ARP220       18 22 21  52.3 269.5  2.8      69.7   173   2  8  17600  21 35 00
21 57 00  ---          18 44 25  47.5 272.2  3.2      69.6  1320   R  1      0

22 00 00  1613+341     18 47 25  57.6 286.6  2.6      85.5   154   2  9      0  22 00 00
22 06 00  ---          18 53 26  56.3 286.8  2.7      84.8   360   F  1   4800

22 06 00  ARP220       18 53 26  45.6 273.3  3.3      69.5   -27   2  9   4800  22 06 00
22 22 00  ---          19 09 29  42.2 275.1  3.6      69.1   933   F  1  17600

22 25 00  ARP220       19 12 30  41.5 275.4  3.6      69.1   173   2 10  17600  22 25 00
22 47 00  ---          19 34 33  36.8 277.8  4.0      68.4  1320   R  1      0

22 50 00  ARP220       19 37 34  36.2 278.1  4.0      68.3   173   2 11      0  22 50 00
23 12 00  ---          19 59 37  31.5 280.4  4.4      67.3  1320   F  1  17600

23 15 00  ARP220       20 02 38  30.8 280.7  4.5      67.2   173   2 12  17600  23 15 00
23 37 00  ---          20 24 41  26.2 283.0  4.8      66.1  1320   R  1      0

23 40 00  1613+341     20 27 42  37.2 291.8  4.2      75.1   152   2 13      0  23 40 00
23 43 00  ---          20 30 42  36.6 292.0  4.3      74.8   180   F  1   2400

23 43 00  ARP220       20 30 42  24.9 283.6  4.9      65.8   -29   2 13   2400  23 43 00
23 58 00  ---          20 45 45  21.8 285.2  5.2      64.9   871   F  1  14400


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


 Setup file: arp220.set
   Matches group v20cm_2 in /usr/local/vlbi_sched/catalogs/freq.dat
    FD filtered above 1760.  SC filtered above 1740.

   Setup group:    7         Station: VLBA              Total bit rate:  256
   Format: VLBA1:2           Bits per sample: 2         Sample rate: 16.000
   Number of channels:  8    Passes/head pos:   1       Speedup factor:   1.00

   Tape speeds: Low density - 266.660 ips,  High density - 160.00 ips
   Time per pass for  17600 ft, High density tapes is: 00:22:00

   1st LO=   2400.00   2400.00   2400.00   2400.00   2400.00   2400.00   2400.00   2400.00
   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      2.4     15.4

  The following frequency sets based on this setup were used.

   Frequency Set:   7  Setup file default.  Used pcal sets:   1
   LO sum=    1632.99   1632.99   1640.99   1640.99   1648.99   1648.99   1656.99   1656.99
   BBC fr=     767.01    767.01    759.01    759.01    751.01    751.01    743.01    743.01
   Bandwd=      8.000     8.000     8.000     8.000     8.000     8.000     8.000     8.000

  The following pulse cal sets were used with this setup:

   Pulse cal detection set:   1  PCAL = 1MHZ
    PCALXB1=   S1    S3    S5    S7    S1    S3    S5    S7 
    PCALXB2=   S2    S4    S6    S8    S2    S4    S6    S8 
    PCALFR1=    10    10    10    10  6010  6010  6010  6010
    PCALFR2=    10    10    10    10  6010  6010  6010  6010

   Track assignments are: 
    track1=   2, 10, 18, 26,  3, 11, 19, 27
    barrel=roll_auto
 SOURCE LIST -- GL026B VLBA format, 18 cm, Arp 220, Colin Lonsdale, November 2002
     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) 

 * ARP220            15 32 46.880196   * 15 34 57.224670     15 35 02.406600 
                     23 40 07.99276    * 23 30 11.56400      23 29 43.00602 
                     From catalog imbedded in main SCHED input file.

 * 1516+193          15 14 40.987286   * 15 16 56.797600     15 17 02.300133 
                     19 43 10.96935    * 19 32 13.01900      19 31 41.16431 
                     From catalog imbedded in main SCHED input file.

 * 1613+341          16 11 47.914510   * 16 13 41.064500     16 13 45.236673 
                     34 20 19.83496    * 34 12 47.91000      34 12 27.67864 
                     From catalog imbedded in main SCHED input file.

 * 3C286             13 28 49.657708   * 13 31 08.288000     13 31 14.112421 
                     30 45 58.64136    * 30 30 32.96000      30 29 43.43295 
                     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) 
   ARP220              42.3
   1516+193            38.4
   1613+341            54.2
   3C286               56.6

  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 

