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COVER INFORMATION

Station: NOTO_S2 (Code Nt )
Experiment: VSOP observation of 0235+164 at 1.6 GHz
Exp. Code: v040c


Schedule Version: 1.00
Processed by SCHED version: Release of 1 Dec. 1998

PI: S. Frey

Address: FOMI Satellite Geodetic Obs.
P.O.Box 546
H-1373 Budapest Hungary


Phone: +36 27 310980
EMAIL: frey@novell.sgo.fomi.hu
Fax: +36 27 310982
Phone during observation:

Observing mode: VSOP, 1.6 GHz continuum, 128-2-2

Notes: Fringe finder : 0420-014




Schedule for NOTO_S2 (Code Nt ) Page 2
VSOP observation of 0235+164 at 1.6 GHz
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.
-------------------------------------------------------------------------------
Start UT Source Start / Stop Early Tapes
Stop UT LST EL AZ HA UP ParA Dwell (see above)
-------------------------------------------------------------------------------

--- Sun 31 Jan 1999 Day 31 ---

Next scan frequencies: 1634.00 1650.00
Next BBC frequencies: 834.90 850.90
Next scan bandwidths: 16.00 16.00

10 35 00 0235+164 20 15 48 5.5 433.3 -6.4 -53.1 0 1 1 52
11 10 00 --- 20 50 54 12.3 438.3 -5.8 -54.8 2100 F 1 787

11 10 00 0235+164 20 50 54 12.3 438.3 -5.8 -54.8 -2 1 1 787
12 00 00 --- 21 41 02 22.2 445.4 -5.0 -56.3 2998 F 1 1837

12 00 00 0235+164 21 41 02 22.2 445.4 -5.0 -56.3 -2 1 1 1837
12 20 00 --- 22 01 05 26.2 448.3 -4.6 -56.6 1198 F 1 2257

12 20 00 0235+164 22 01 05 26.2 448.3 -4.6 -56.6 -2 1 1 2257
13 00 00 --- 22 41 12 34.2 454.5 -4.0 -56.3 2398 F 1 3097

13 00 00 0235+164 22 41 12 34.2 454.5 -4.0 -56.3 -2 1 1 3097
14 00 00 --- 23 41 22 46.1 465.3 -3.0 -53.6 3598 F 1 4357

14 00 00 0235+164 23 41 22 46.1 465.3 -3.0 -53.6 -2 1 1 4357
15 00 00 --- 00 41 31 57.2 480.2 -2.0 -46.2 3598 F 1 5617

15 00 00 0420-014 00 41 31 26.1 473.6 -3.7 -47.2 -64 1 1 5617
15 10 00 --- 00 51 33 27.9 475.5 -3.5 -46.2 536 F 1 5827

15 10 00 0235+164 00 51 33 58.9 483.4 -1.8 -44.2 -64 1 1 5827
15 50 00 --- 01 31 40 64.9 499.4 -1.1 -32.9 2336 F 1 6667

15 50 00 0235+164 01 31 40 64.9 499.4 -1.1 -32.9 -2 1 1 6667
16 00 00 --- 01 41 41 66.1 504.4 -0.9 -29.1 598 F 1 6877


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


Setup file: /home/sched/short-term/progs/sched_dec98/setups/vsop1634_s2.set
Matches group nt18cm in /home/sched/short-term/progs/sched_dec98/catalogs/freq.dat
LO from Trigilio 26Sep96

Setup group: 3 Station: NOTO_S2 Total bit rate: 128
Format: S2 Bits per sample: 2 Sample rate: 32.000
Number of channels: 2 Passes/head pos: 1 Speedup factor: 1.00

Tape speeds: Low density - 6.300 ips, High density - 4.20 ips
Time per pass for 7600 ft, High density tapes is: 06:01:54

LO sum= 1634.00 1650.00
1st LO= 799.10 799.10
Net SB= U U
Pol. = LCP LCP
BBC fr= 834.90 850.90
Bandwd= 16.00 16.00
BBC = 1 3
BBC SB= U U
IF = A A

Track assignments are:
track1= 0, 0
barrel=roll_off
 SOURCE LIST -- VSOP observation of 0235+164 at 1.6 GHz
Catalog positions marked with *.
Position of date is for stop time of first scan.
Names used in schedule marked with *.
Short names used in VLA and SNAP files marked with +.

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

J0238+1636 02 35 52.630207 * 02 38 38.930099 02 38 35.434009
* 0235+164 16 24 04.01677 * 16 36 59.27519 16 36 38.19152
J0238+16 /home/sched/short-term/progs/sched_dec98/catalogs/sources.vlba
USNO - Ref Frame 1995-1, Eubanks Mar 1995

J0423-0120 04 20 43.539848 * 04 23 15.800725 04 23 13.080307
* 0420-014 -01 27 28.69911 *-01 20 33.06441 -01 20 54.66843
J0423-01 /home/sched/short-term/progs/sched_dec98/catalogs/sources.vlba
USNO - Ref Frame 1995-1, Eubanks Mar 1995



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)
0235+164 91.4
0420-014 110.7

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