  COVER INFORMATION 

 Station:    VLBA_FD   (Code Fd ) 
 Experiment: GG038C:EVN+VLBA+Y27: 4+2 cm -01/jun/01 UT:20-07 EU; 00-11 US
 Exp. Code:  GG038C  


Schedule Version:       2.00                                              
Processed by SCHED version: Short term release of 12 Feb. 2001            

PI:       GABRIELE GIOVANNINI                                             

Address:  ISTITUTO DI RADIOASTRONOMIA                                     
          VIA GOBETTI 101                                                 
          I-40129 BOLOGNA, ITALY                                          
                                                                          

Phone:    +39-051-6399415                                                 
EMAIL:    GGIOVANN@IRA.BO.CNR.IT                                          
Fax:      +39-051-6399431                                                 
Phone during observation: +39-051-6399415                                 

Observing mode: VLBA 128-8-1 - continuum at 3.6cm and 2cm                 

Notes:    Send Logs and Calibration Info to the PI                        
          One Thin Tape                                                   
          Greg Taylor is the local contact person                         
          at 4cm I am using a personal setup by H.Langevelde:gg038c.set   

Schedule for VLBA_FD   (Code Fd )                                   Page   2
               GG038C:EVN+VLBA+Y27: 4+2 cm -01/jun/01 UT:20-07 EU; 00-11 US
  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   2 Jun 2001   Day 153 ---

 Next scan frequencies:  8413.49  8413.49  8413.49  8413.49  8429.49  8429.49
                         8429.49  8429.49
 Next BBC frequencies:    813.49   813.49   813.49   813.49   829.49   829.49
                          829.49   829.49
 Next scan bandwidths:      8.00     8.00     8.00     8.00     8.00     8.00
                            8.00     8.00

00 21 09  OQ208        10 07 34  38.5  76.3 -4.0     -72.0     0   1  1      0  00 21 09
00 25 09  ---          10 11 35  39.3  76.7 -3.9     -72.2   240   F  1   1600

00 27 38  3C338        10 14 04  16.4  53.3 -6.2     -63.5   101   1  1   1600  00 27 38
00 42 38  ---          10 29 07  19.0  54.6 -6.0     -65.5   900   F  1   7600

00 43 18  3C338        10 29 47  19.1  54.7 -6.0     -65.6    38   1  1   7600  00 43 18
00 58 18  ---          10 44 49  21.8  55.9 -5.7     -67.6   900   F  1  13600

00 58 58  3C338        10 45 29  21.9  56.0 -5.7     -67.6    38   1  1  13600  00 58 58
01 08 58  ---          10 55 31  23.7  56.8 -5.6     -68.9   600   F  1  17600

 Next scan frequencies: 15357.49 15357.49 15357.49 15357.49 15373.49 15373.49
                        15373.49 15373.49
 Next BBC frequencies:    757.49   757.49   757.49   757.49   773.49   773.49
                          773.49   773.49

01 11 12  OQ208        10 57 45  49.1  80.7 -3.2     -74.9    81   1  2  17600  01 11 12
01 15 12  ---          11 01 46  49.9  81.0 -3.1     -75.2   240   R  1  16000

01 17 24  3C338        11 03 58  25.2  57.4 -5.4     -70.0    80   1  2  16000  01 17 24
01 37 24  ---          11 24 01  28.9  58.8 -5.1     -72.6  1200   R  1   8000

01 39 24  3C338        11 26 01  29.3  58.9 -5.0     -72.8   117   1  2   8000  01 39 24
01 59 24  ---          11 46 05  33.0  60.1 -4.7     -75.4  1200   R  1      0

02 00 04  3C338        11 46 45  33.1  60.2 -4.7     -75.5    38   1  3      0  02 00 04
02 11 04  ---          11 57 47  35.2  60.8 -4.5     -76.9   660   F  1   4400

02 11 44  3C338        11 58 27  35.3  60.8 -4.5     -77.0    38   1  3   4400  02 11 44
02 22 44  ---          12 09 28  37.4  61.4 -4.3     -78.4   660   F  1   8800

02 23 24  3C338        12 10 09  37.5  61.4 -4.3     -78.5    38   1  3   8800  02 23 24
02 34 24  ---          12 21 10  39.6  61.9 -4.1     -79.9   660   F  1  13200
Schedule for VLBA_FD   (Code Fd )                                   Page   3
               GG038C:EVN+VLBA+Y27: 4+2 cm -01/jun/01 UT:20-07 EU; 00-11 US
  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   2 Jun 2001   Day 153 ---

02 35 04  3C338        12 21 50  39.7  62.0 -4.1     -80.0    38   1  3  13200  02 35 04
02 46 04  ---          12 32 52  41.8  62.4 -3.9     -81.5   660   F  1  17600

02 46 44  3C338        12 33 32  41.9  62.4 -3.9     -81.6    38   1  4  17600  02 46 44
02 59 44  ---          12 46 35  44.4  62.9 -3.7     -83.3   780   R  1  12400

03 00 24  3C338        12 47 15  44.6  62.9 -3.7     -83.4    38   1  4  12400  03 00 24
03 13 24  ---          13 00 17  47.1  63.3 -3.5     -85.3   780   R  1   7200

03 14 04  3C338        13 00 57  47.2  63.3 -3.5     -85.3    38   1  4   7200  03 14 04
03 27 04  ---          13 13 59  49.7  63.5 -3.2     -87.2   780   R  1   2000

03 30 12  3C279        13 17 08  53.2 188.7  0.3       7.5   103   1  4   2000  03 30 12
03 35 12  ---          13 22 09  53.0 190.8  0.4       9.3   300   R  1      0

03 43 12  OQ208        13 30 10  81.7 102.9 -0.6     -72.5   419   1  5      0  03 43 12
03 47 12  ---          13 34 11  82.5 104.9 -0.5     -71.0   240   F  1   1600

03 49 21  3C338        13 36 20  54.0  63.6 -2.9     -90.7    70   1  5   1600  03 49 21
04 02 21  ---          13 49 22  56.5  63.5 -2.7     -92.9   780   F  1   6800

04 03 01  3C338        13 50 02  56.6  63.5 -2.6     -93.0    38   1  5   6800  04 03 01
04 15 01  ---          14 02 04  58.9  63.2 -2.4     -95.2   720   F  1  11600

04 15 41  3C338        14 02 44  59.1  63.2 -2.4     -95.3    38   1  5  11600  04 15 41
04 25 41  ---          14 12 46  61.0  62.7 -2.3     -97.3   600   F  1  15600

04 29 20  3C279        14 16 25  48.8 211.2  1.3      26.6   118   1  5  15600  04 29 20
04 34 20  ---          14 21 26  48.3 212.9  1.4      28.0   300   F  1  17600

04 38 01  3C338        14 25 08  63.4  62.0 -2.1     -99.9   119   1  6  17600  04 38 01
04 49 01  ---          14 36 10  65.4  61.0 -1.9    -102.5   660   R  1  13200

04 49 41  3C338        14 36 50  65.6  61.0 -1.9    -102.7    38   1  6  13200  04 49 41
05 00 41  ---          14 47 52  67.6  59.6 -1.7    -105.7   660   R  1   8800

05 01 21  3C338        14 48 32  67.8  59.5 -1.7    -105.9    38   1  6   8800  05 01 21
05 12 21  ---          14 59 34  69.8  57.8 -1.5    -109.3   660   R  1   4400

05 13 01  3C338        15 00 14  69.9  57.7 -1.5    -109.5    38   1  6   4400  05 13 01
05 20 01  ---          15 07 15  71.2  56.2 -1.4    -112.0   420   R  1   1600
Schedule for VLBA_FD   (Code Fd )                                   Page   4
               GG038C:EVN+VLBA+Y27: 4+2 cm -01/jun/01 UT:20-07 EU; 00-11 US
  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   2 Jun 2001   Day 153 ---

05 24 44  OQ208        15 11 58  75.7 265.3  1.1      77.2   141   1  6   1600  05 24 44
05 28 44  ---          15 15 59  74.9 266.0  1.1      77.5   240   R  1      0

 Next scan frequencies:  8413.49  8413.49  8413.49  8413.49  8429.49  8429.49
                         8429.49  8429.49
 Next BBC frequencies:    813.49   813.49   813.49   813.49   829.49   829.49
                          829.49   829.49

05 32 22  1749+096     15 19 37  48.9 112.5 -2.5     -53.7   113   1  7      0  05 32 22
05 37 22  ---          15 24 38  49.9 113.7 -2.4     -53.1   300   F  1   2000

05 40 44  3C338        15 28 02  74.8  50.1 -1.0    -121.1   151   1  7   2000  05 40 44
05 57 44  ---          15 45 04  77.4  42.0 -0.7    -131.7  1020   F  1   8800

05 58 24  3C338        15 45 44  77.5  41.6 -0.7    -132.2    38   1  7   8800  05 58 24
06 15 24  ---          16 02 47  79.6  28.9 -0.4    -147.3  1020   F  1  15600

06 16 04  3C345        16 03 27  77.8  38.6 -0.7    -135.6    32   1  7  15600  06 16 04
06 21 04  ---          16 08 28  78.4  35.2 -0.6    -139.8   300   F  1  17600

06 21 44  3C338        16 09 08  80.2  22.8 -0.3    -154.4    30   1  8  17600  06 21 44
06 39 44  ---          16 27 11  81.1   1.9  0.0    -177.9  1080   R  1  10400

06 40 24  3C338        16 27 51  81.1   1.1  0.0    -178.8    37   1  8  10400  06 40 24
06 57 24  ---          16 44 54  80.5 -19.3  0.3     158.4  1020   R  1   3600

07 10 17  OQ208        16 57 49  53.0 -82.3  2.8      75.9   716   1  8   3600  07 10 17
07 14 17  ---          17 01 49  52.2 -81.9  2.9      75.7   240   R  1   2000

07 18 02  3C279        17 05 35  20.2 249.9  4.2      54.3     2   1  8   2000  07 18 02
07 23 02  ---          17 10 36  19.2 250.7  4.2      54.7   300   R  1      0

 Next scan frequencies: 15357.49 15357.49 15357.49 15357.49 15373.49 15373.49
                        15373.49 15373.49
 Next BBC frequencies:    757.49   757.49   757.49   757.49   773.49   773.49
                          773.49   773.49

07 26 20  3C338        17 13 54  77.2 317.1  0.8     130.6    80   1  9      0  07 26 20
07 44 20  ---          17 31 57  74.3 308.9  1.1     119.8  1080   F  1   7200

07 46 04  OQ208        17 33 42  45.4 280.8  3.4      74.0    45   1  9   7200  07 46 04
07 50 04  ---          17 37 43  44.6 281.2  3.5      73.7   240   F  1   8800
Schedule for VLBA_FD   (Code Fd )                                   Page   5
               GG038C:EVN+VLBA+Y27: 4+2 cm -01/jun/01 UT:20-07 EU; 00-11 US
  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   2 Jun 2001   Day 153 ---

 Next scan frequencies:  8413.49  8413.49  8413.49  8413.49  8429.49  8429.49
                         8429.49  8429.49
 Next BBC frequencies:    813.49   813.49   813.49   813.49   829.49   829.49
                          829.49   829.49

07 50 44  OQ208        17 38 23  44.4 281.2  3.5      73.7    38   1  9   8800  07 50 44
07 54 44  ---          17 42 24  43.6 281.6  3.6      73.5   240   F  1  10400

07 58 10  3C338        17 45 50  71.9 304.8  1.3     113.6   147   1  9  10400  07 58 10
08 16 10  ---          18 03 53  68.7 301.2  1.6     107.3  1080   F  1  17600

 Next scan frequencies: 15357.49 15357.49 15357.49 15357.49 15373.49 15373.49
                        15373.49 15373.49
 Next BBC frequencies:    757.49   757.49   757.49   757.49   773.49   773.49
                          773.49   773.49

08 16 50  3C338        18 04 33  68.6 301.1  1.6     107.1    38   1 10  17600  08 16 50
08 38 50  ---          18 26 36  64.4 298.5  2.0     101.2  1320   R  1   8800

 Next scan frequencies:  8413.49  8413.49  8413.49  8413.49  8429.49  8429.49
                         8429.49  8429.49
 Next BBC frequencies:    813.49   813.49   813.49   813.49   829.49   829.49
                          829.49   829.49

08 40 50  3C338        18 28 37  64.0 298.3  2.0     100.8   117   1 10   8800  08 40 50
09 02 50  ---          18 50 40  59.8 297.0  2.4      96.1  1320   R  1      0

 Next scan frequencies: 15357.49 15357.49 15357.49 15357.49 15373.49 15373.49
                        15373.49 15373.49
 Next BBC frequencies:    757.49   757.49   757.49   757.49   773.49   773.49
                          773.49   773.49

09 03 30  3C338        18 51 20  59.7 297.0  2.4      95.9    38   1 11      0  09 03 30
09 21 30  ---          19 09 23  56.2 296.5  2.7      92.7  1080   F  1   7200

09 23 19  OQ208        19 11 12  25.2 289.5  5.1      67.3    45   1 11   7200  09 23 19
09 27 19  ---          19 15 13  24.4 289.9  5.1      67.0   240   F  1   8800
Schedule for VLBA_FD   (Code Fd )                                   Page   6
               GG038C:EVN+VLBA+Y27: 4+2 cm -01/jun/01 UT:20-07 EU; 00-11 US
  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   2 Jun 2001   Day 153 ---

 Next scan frequencies:  8413.49  8413.49  8413.49  8413.49  8429.49  8429.49
                         8429.49  8429.49
 Next BBC frequencies:    813.49   813.49   813.49   813.49   829.49   829.49
                          829.49   829.49

09 27 59  OQ208        19 15 53  24.2 289.9  5.1      66.9    38   1 11   8800  09 27 59
09 31 59  ---          19 19 54  23.4 290.3  5.2      66.6   240   F  1  10400

09 34 33  3C338        19 22 28  53.7 296.3  2.9      90.5    91   1 11  10400  09 34 33
09 52 33  ---          19 40 31  50.2 296.4  3.2      87.7  1080   F  1  17600

 Next scan frequencies: 15357.49 15357.49 15357.49 15357.49 15373.49 15373.49
                        15373.49 15373.49
 Next BBC frequencies:    757.49   757.49   757.49   757.49   773.49   773.49
                          773.49   773.49

09 53 13  3C338        19 41 11  50.1 296.4  3.2      87.6    38   1 12  17600  09 53 13
10 04 13  ---          19 52 13  48.0 296.6  3.4      86.0   660   R  1  13200

10 05 59  1749+096     19 54 00  54.6 240.1  2.0      49.2    67   1 12  13200  10 05 59
10 11 29  ---          19 59 31  53.6 241.6  2.1      50.2   330   R  1  11000

 Next scan frequencies:  8413.49  8413.49  8413.49  8413.49  8429.49  8429.49
                         8429.49  8429.49
 Next BBC frequencies:    813.49   813.49   813.49   813.49   829.49   829.49
                          829.49   829.49

10 12 09  1749+096     20 00 11  53.5 241.8  2.1      50.3    38   1 12  11000  10 12 09
10 17 39  ---          20 05 42  52.4 243.2  2.2      51.2   330   R  1   8800

10 23 26  3C338        20 11 30  44.3 297.1  3.7      83.2   309   1 12   8800  10 23 26
10 34 26  ---          20 22 31  42.2 297.5  3.9      81.8   660   R  1   4400

10 35 06  3C338        20 23 12  42.1 297.5  3.9      81.7    38   1 12   4400  10 35 06
10 46 06  ---          20 34 13  40.0 298.0  4.1      80.2   660   R  1      0

 Next scan frequencies: 15357.49 15357.49 15357.49 15357.49 15373.49 15373.49
                        15373.49 15373.49
 Next BBC frequencies:    757.49   757.49   757.49   757.49   773.49   773.49
                          773.49   773.49

10 46 46  3C338        20 34 53  39.8 298.0  4.1      80.1    38   1 13      0  10 46 46
10 59 46  ---          20 47 56  37.4 298.6  4.3      78.4   780   F  1   5200


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


 Setup file: ./gg038c.set
   Matches group v4cm_3 in /lsoft/sched/catalogs/freq.dat

   Setup group:    3         Station: VLBA              Total bit rate:  128
   Format: VLBA1:4           Bits per sample: 1         Sample rate: 16.000
   Number of channels:  8    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=   7600.00   7600.00   7600.00   7600.00   7600.00   7600.00   7600.00   7600.00
   Net SB=         L         L         U         U         L         L         U         U
   Pol.  =      RCP       LCP       RCP       LCP       RCP       LCP       RCP       LCP 
   BBC   =         1         2         1         2         3         4         3         4
   BBC SB=         L         L         U         U         L         L         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=    8413.49   8413.49   8413.49   8413.49   8429.49   8429.49   8429.49   8429.49
   BBC fr=     813.49    813.49    813.49    813.49    829.49    829.49    829.49    829.49
   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=   490   510   490   510  6490  6510  6490  6510
    PCALFR2=   490   510   490   510  6490  6510  6490  6510

   Track assignments are: 
    track1=   2, 10, 18, 26,  3, 11, 19, 27
    barrel=roll_auto


 Setup file: ./v2cm-128-8-1-UL.set
   Matches group v2cm_d3 in /lsoft/sched/catalogs/freq.dat
    Fourth 2cm filter

   Setup group:   12         Station: VLBA              Total bit rate:  128
   Format: VLBA1:4           Bits per sample: 1         Sample rate: 16.000
   Number of channels:  8    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=  14600.00  14600.00  14600.00  14600.00  14600.00  14600.00  14600.00  14600.00
   Net SB=         L         L         U         U         L         L         U         U
   Pol.  =      RCP       LCP       RCP       LCP       RCP       LCP       RCP       LCP 
   BBC   =         1         2         1         2         3         4         3         4
   BBC SB=         L         L         U         U         L         L         U         U
   IF    =        B         D         B         D         B         D         B         D 

   VLBA FE=     omit     2cm      omit     2cm 
   VLBA Synth=  14.6     10.9     10.9

  The following frequency sets based on this setup were used.

   Frequency Set:  12  Setup file default.  Used pcal sets:   1
   LO sum=   15357.49  15357.49  15357.49  15357.49  15373.49  15373.49  15373.49  15373.49
   BBC fr=     757.49    757.49    757.49    757.49    773.49    773.49    773.49    773.49
   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=   490   510   490   510  6490  6510  6490  6510
    PCALFR2=   490   510   490   510  6490  6510  6490  6510

   Track assignments are: 
    track1=   2, 10, 18, 26,  3, 11, 19, 27
    barrel=roll_auto
 SOURCE LIST -- GG038C:EVN+VLBA+Y27: 4+2 cm -01/jun/01 UT:20-07 EU; 00-11 US
     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) 

 * 3C338           * 16 26 55.319000     16 28 38.243708     16 28 42.119886 
                   * 39 39 36.49300      39 33 04.18682      39 32 56.43559 
                     From catalog imbedded in main SCHED input file.

   J1256-0547        12 53 35.831291   * 12 56 11.166558     12 56 15.179274 
   1253-055         -05 31 07.99574    *-05 47 21.52460     -05 47 46.14540 
 * 3C279             /lsoft/sched/catalogs/sources.vlba
   J1256-05          USNO - Ref Frame 1998-6, Eubanks June 1998

   J1407+2827        14 04 45.615152   * 14 07 00.394411     14 07 04.359888 
   1404+286          28 41 29.23491    * 28 27 14.68994      28 27 01.28244 
   J1407+28          /lsoft/sched/catalogs/sources.vlba
 * OQ208             USNO - Ref Frame 1998-6, Eubanks June 1998

   J1635+3808        16 33 30.625098   * 16 35 15.492973     16 35 19.383800 
   1633+38           38 14 10.08278    * 38 08 04.50056      38 07 56.90339 
   1633+382          /lsoft/sched/catalogs/sources.vlba
 * J1635+38          USNO - Ref Frame 1998-6, Eubanks June 1998

   J1642+3948        16 41 17.606463   * 16 42 58.810200     16 43 02.667345 
   1641+399          39 54 10.81592    * 39 48 36.99500      39 48 29.73287 
 * 3C345             /lsoft/sched/catalogs/sources.vlba
   J1642+39          JVAS - Patnaik et al. 1992, mnras, 254, 655;   S8.4GHz=  5182 mJy

   J1751+0939        17 49 10.387930   * 17 51 32.818573     17 51 37.145118 
 * 1749+096          09 39 42.82582    * 09 39 00.72837      09 38 57.94963 
   J1751+09          /lsoft/sched/catalogs/sources.vlba
                     USNO - Ref Frame 1998-6, Eubanks June 1998



  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) 
   3C338              118.2
   3C279              123.5
   OQ208              117.3
   J1635+38           119.7
   3C345              118.0
   1749+096           143.7

  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 

