  COVER INFORMATION 

 Station:    VLBA_FD   (Code Fd ) 
 Experiment: A Precise Brightness Temperature for J1819+3845
 Exp. Code:  GM049B  


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

PI:       J.-P. Macquart                                                  

Address:  Kapteyn Institute                                               
          Rijksuniversiteit Gronigen                                      
          9700 AV Gronigen                                                
          THE NETHERLANDS                                                 

Phone:    +31-50-363-4090                                                 
EMAIL:                                                                    
Fax:      +31-50-363-6100                                                 
Phone during observation:                                                 

Observing mode: 4cm continuum                                             

Notes:                                                                    
                                                                          
                                                                          
                                                                          


COVER LETTER:


Schedule for VLBA_FD   (Code Fd )                                   Page   2
               A Precise Brightness Temperature for J1819+3845
  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)
----------------------------------------------------------------------------------------

 --- Sun   1 Jun 2003   Day 152 ---

 Next scan frequencies:  8399.49  8399.49  8407.49  8407.49  8415.49  8415.49
                         8423.49  8423.49
 Next BBC frequencies:    799.49   799.49   807.49   807.49   815.49   815.49
                          823.49   823.49
 Next scan bandwidths:      8.00     8.00     8.00     8.00     8.00     8.00
                            8.00     8.00

01 52 40  J1819+3845   11 33 29  10.7  51.0 -6.8     -59.1     0   1  1      0  01 52 40
02 14 40  ---          11 55 32  14.4  53.2 -6.4     -62.1  1320   F  1  17600

02 15 40  J1819+3845   11 56 32  14.6  53.3 -6.4     -62.2    54   1  2  17600  02 15 40
02 27 40  ---          12 08 34  16.7  54.4 -6.2     -63.8   720   R  1   8000

02 29 50  1749+096     12 10 44   9.0  84.0 -5.7     -60.2   104   1  2   8000  02 29 50
02 34 50  ---          12 15 45  10.0  84.7 -5.6     -60.3   300   R  1   4000

02 41 10  2200+420     12 22 07 -10.4  25.4 -9.7  D  -30.0   335   1  2   4000  02 41 10
02 46 10  ---          12 27 08  -9.9  26.2 -9.6  D  -30.9     0   R  1      0

02 47 10  J1819+3845   12 28 08  20.1  56.1 -5.9     -66.3    18   1  3      0  02 47 10
03 09 10  ---          12 50 11  24.1  57.9 -5.5     -69.1  1320   F  1  17600

03 10 10  J1819+3845   12 51 12  24.3  57.9 -5.5     -69.2    54   1  4  17600  03 10 10
03 22 10  ---          13 03 13  26.5  58.8 -5.3     -70.7   720   R  1   8000

03 24 17  1749+096     13 05 20  20.7  90.9 -4.8     -60.8    99   1  4   8000  03 24 17
03 29 17  ---          13 10 21  21.8  91.5 -4.7     -60.7   300   R  1   4000

03 35 36  2200+420     13 16 41  -4.5  33.7 -8.8  D  -40.2   334   1  4   4000  03 35 36
03 40 36  ---          13 21 42  -3.9  34.4 -8.7  D  -41.1     0   R  1      0

03 48 12  J1819+3845   13 29 19  31.3  60.6 -4.8     -74.0   392   1  5      0  03 48 12
04 10 12  ---          13 51 23  35.5  61.9 -4.5     -76.7  1320   F  1  17600

04 11 12  J1819+3845   13 52 23  35.7  61.9 -4.5     -76.8    54   1  6  17600  04 11 12
04 23 12  ---          14 04 25  38.0  62.6 -4.3     -78.3   720   R  1   8000

04 25 18  1749+096     14 06 32  33.8  99.3 -3.8     -59.5    96   1  6   8000  04 25 18
04 30 18  ---          14 11 33  34.8 100.1 -3.7     -59.2   300   R  1   4000

04 35 21  2200+420     14 16 37   3.3  41.5 -7.8     -50.4   234   1  6   4000  04 35 21
04 40 21  ---          14 21 37   4.1  42.1 -7.7     -51.2   300   R  1      0
Schedule for VLBA_FD   (Code Fd )                                   Page   3
               A Precise Brightness Temperature for J1819+3845
  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)
----------------------------------------------------------------------------------------

 --- Sun   1 Jun 2003   Day 152 ---

04 41 21  J1819+3845   14 22 38  41.5  63.4 -3.9     -80.6   -21   1  7      0  04 41 21
05 03 21  ---          14 44 41  45.7  64.2 -3.6     -83.5  1299   F  1  17600

05 04 21  J1819+3845   14 45 41  45.9  64.3 -3.6     -83.7    54   1  8  17600  05 04 21
05 16 21  ---          14 57 43  48.3  64.6 -3.4     -85.3   720   R  1   8000

05 18 28  1749+096     14 59 50  44.9 108.4 -2.9     -55.9    91   1  8   8000  05 18 28
05 23 28  ---          15 04 51  45.9 109.4 -2.8     -55.4   300   R  1   4000

05 27 45  2200+420     15 09 08  11.2  47.2 -6.9     -58.6   181   1  8   4000  05 27 45
05 32 45  ---          15 14 09  12.0  47.7 -6.8     -59.3   300   R  1      0

05 33 45  J1819+3845   15 15 09  51.6  64.9 -3.1     -87.8   -25   1  9      0  05 33 45
05 55 45  ---          15 37 13  55.9  65.0 -2.7     -91.2  1295   F  1  17600

05 56 45  J1819+3845   15 38 13  56.1  65.0 -2.7     -91.3    54   1 10  17600  05 56 45
06 08 45  ---          15 50 15  58.5  64.8 -2.5     -93.4   720   R  1   8000

06 11 27  1749+096     15 52 58  55.3 120.9 -2.0     -48.5   119   1 10   8000  06 11 27
06 16 27  ---          15 57 59  56.2 122.4 -1.9     -47.5   300   R  1   4000

06 20 47  2200+420     16 02 20  20.0  51.9 -6.0     -66.3   182   1 10   4000  06 20 47
06 25 47  ---          16 07 21  20.8  52.3 -5.9     -67.0   300   R  1      0

06 29 45  J1819+3845   16 11 19  62.6  64.0 -2.1     -97.4   148   1 11      0  06 29 45
06 51 45  ---          16 33 22  66.8  62.3 -1.8    -102.4  1320   F  1  17600

06 52 45  J1819+3845   16 34 22  67.0  62.2 -1.8    -102.6    54   1 12  17600  06 52 45
07 04 45  ---          16 46 24  69.3  60.6 -1.6    -106.0   720   R  1   8000

07 06 44  1749+096     16 48 24  64.4 141.6 -1.1     -32.8    59   1 12   8000  07 06 44
07 11 44  ---          16 53 25  65.0 144.0 -1.0     -30.8   300   R  1   4000

07 15 43  2200+420     16 57 25  29.5  55.7 -5.1     -74.0   162   1 12   4000  07 15 43
07 20 43  ---          17 02 25  30.4  56.0 -5.0     -74.7   300   R  1      0

07 23 25  J1819+3845   17 05 08  72.7  57.0 -1.2    -112.4    71   1 13      0  07 23 25
07 45 25  ---          17 27 11  76.5  49.4 -0.9    -123.1  1320   F  1  17600

07 46 25  2007+777     17 28 11  39.6   9.9 -2.6    -134.9   -20   1 14  17600  07 46 25
07 58 25  ---          17 40 13  40.1   9.3 -2.4    -138.3   700   R  1   8000

08 02 34  1749+096     17 44 24  68.9 175.0 -0.1      -4.4   133   1 14   8000  08 02 34
08 07 34  ---          17 49 24  69.0 178.4  0.0      -1.4   300   R  1   4000
Schedule for VLBA_FD   (Code Fd )                                   Page   4
               A Precise Brightness Temperature for J1819+3845
  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)
----------------------------------------------------------------------------------------

 --- Sun   1 Jun 2003   Day 152 ---

08 10 58  2200+420     17 52 49  39.5  58.3 -4.2     -81.8   118   1 14   4000  08 10 58
08 15 58  ---          17 57 50  40.5  58.5 -4.1     -82.6   300   R  1      0

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

08 25 28  J1819+3845   18 07 22  81.5  16.3 -0.2    -161.9   482   2  1      0  08 25 28
08 47 28  ---          18 29 25  81.6 -13.3  0.2     165.3  1320   F  1  17600

08 56 58  J1819+3845   18 38 57  81.0 -24.8  0.3     152.4   556   2  2  17600  08 56 58
09 18 58  ---          19 01 00  78.3 -43.5  0.7     130.5  1320   R  1      0

09 28 28  J1819+3845   19 10 32  76.8 -48.7  0.8     124.0   561   2  3      0  09 28 28
09 50 28  ---          19 32 36  73.0 -56.6  1.2     112.9  1320   F  1  17600

09 59 58  J1819+3845   19 42 07  71.3 -58.8  1.4     109.4   561   2  4  17600  09 59 58
10 21 58  ---          20 04 11  67.1 -62.1  1.7     102.8  1320   R  1      0

10 31 28  J1819+3845   20 13 42  65.3 -63.0  1.9     100.4   560   2  5      0  10 31 28
10 53 28  ---          20 35 46  61.0 -64.4  2.3      95.8  1320   F  1  17600

11 02 58  J1819+3845   20 45 17  59.2 -64.7  2.4      94.0   560   2  6  17600  11 02 58
11 13 58  ---          20 56 19  57.0 -64.9  2.6      92.1   660   R  1   8800

11 23 28  2007+777     21 05 51  42.3  -4.2  1.0     162.4   524   2  6   8800  11 23 28
11 34 28  ---          21 16 53  42.1  -5.0  1.2     159.2   660   R  1      0

11 43 58  J1819+3845   21 26 24  51.2 -64.9  3.1      87.4   524   2  7      0  11 43 58
12 05 58  ---          21 48 28  46.9 -64.4  3.5      84.3  1320   F  1  17600

12 15 28  J1819+3845   21 57 59  45.0 -64.1  3.6      83.1   560   2  8  17600  12 15 28
12 37 28  ---          22 20 03  40.8 -63.3  4.0      80.2  1320   R  1      0

12 46 58  J1819+3845   22 29 35  39.0 -62.8  4.2      79.0   560   2  9      0  12 46 58
13 08 58  ---          22 51 38  34.8 -61.7  4.5      76.2  1320   F  1  17600

13 18 28  J1819+3845   23 01 10  33.0 -61.1  4.7      75.0   560   2 10  17600  13 18 28
13 40 28  ---          23 23 13  28.8 -59.7  5.1      72.3  1320   R  1      0

13 49 58  J1819+3845   23 32 45  27.1 -59.1  5.2      71.1   560   2 11      0  13 49 58
14 11 58  ---          23 54 49  23.0 -57.4  5.6      68.4  1320   F  1  17600

14 21 28  J1819+3845   00 04 20  21.3 -56.6  5.7      67.2   561   2 12  17600  14 21 28
14 43 28  ---          00 26 24  17.4 -54.8  6.1      64.3  1320   R  1      0
Schedule for VLBA_FD   (Code Fd )                                   Page   5
               A Precise Brightness Temperature for J1819+3845
  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)
----------------------------------------------------------------------------------------

 --- Sun   1 Jun 2003   Day 152 ---

14 52 58  J1819+3845   00 35 55  15.7 -53.9  6.3      63.1   561   2 13      0  14 52 58
15 14 58  ---          00 57 59  11.9 -51.8  6.6      60.1  1320   F  1  17600

15 24 28  J1819+3845   01 07 30  10.3 -50.9  6.8      58.8   561   2 14  17600  15 24 28
15 46 28  ---          01 29 34   6.7 -48.5  7.2      55.7  1320   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: gm049.4cm
   Matches group v4cm_3 in /usr/local/sched/catalogs/freq.dat

   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=   7600.00   7600.00   7600.00   7600.00   7600.00   7600.00   7600.00   7600.00
   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=         U         U         U         U         U         U         U         U
   IF    =        B         D         B         D         B         D         B         D 

   VLBA FE=     omit     4cm      omit     4cm 
   VLBA Synth=   7.6     15.4     15.4

  The following frequency sets based on this setup were used.

   Frequency Set:   7  Setup file default.  Used pcal sets:   1
   LO sum=    8399.49   8399.49   8407.49   8407.49   8415.49   8415.49   8423.49   8423.49
   BBC fr=     799.49    799.49    807.49    807.49    815.49    815.49    823.49    823.49
   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=   510   510   510   510  6510  6510  6510  6510
    PCALFR2=   510   510   510   510  6510  6510  6510  6510

   Track assignments are: 
    track1=   2, 10, 18, 26,  3, 11, 19, 27
    barrel=roll_off 
 SOURCE LIST -- A Precise Brightness Temperature for J1819+3845
     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) 

 * J1819+3845        18 17 46.178328   * 18 19 26.550000     18 19 34.322913 
                     38 43 40.48403    * 38 45 01.80000      38 44 55.56345 
                     From catalog imbedded in main SCHED input file.

   J0137+3309        01 34 49.826365   * 01 37 41.299431     01 37 50.700117 
   0134+329          32 54 20.25881    * 33 09 35.13299      33 10 23.23024 
 * 3C48              /usr/local/sched/catalogs/sources.vlba
   J0137+33          ICRF - Ext.1 Source - 1998 IERS Annual Report

   J1331+3030        13 28 49.657691   * 13 31 08.287984     13 31 18.073599 
   1328+307          30 45 58.64021    * 30 30 32.95885      30 29 39.07109 
 * 3C286             /usr/local/sched/catalogs/sources.vlba
   J1331+30          VLBA Calib. Survey - ICRF Frame - reduced by GSFC group - Aug 2001

   J1751+0939        17 49 10.387930   * 17 51 32.818573     17 51 42.956048 
 * 1749+096          09 39 42.82596    * 09 39 00.72851      09 38 50.43621 
   J1751+09          /usr/local/sched/catalogs/sources.vlba
                     ICRF - Ext.1 Source - 1998 IERS Annual Report

   J2005+7752        20 07 20.430192   * 20 05 30.998520     20 05 27.411283 
 * 2007+777          77 43 58.12308    * 77 52 43.24761      77 52 56.33250 
   J2005+77          /usr/local/sched/catalogs/sources.vlba
                     ICRF - Ext.1 Source - 1998 IERS Annual Report

   J2202+4216        22 00 39.362511   * 22 02 43.291378     22 02 51.086670 
 * 2200+420          42 02 08.59080    * 42 16 39.97994      42 17 16.81704 
   BLLAC             /usr/local/sched/catalogs/sources.vlba
   J2202+42          ICRF - Ext.1 Source - 1998 IERS Annual Report
   VR42220     



  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) 
   J1819+3845         114.5
   3C48                40.5
   3C286              111.5
   1749+096           143.2
   2007+777            75.6
   2200+420            81.0

  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 

