From shibata@hotaka.mtk.nao.ac.jp Tue Jun  8 23:25:59 1999
To: vsog@vsop.isas.ac.jp
From: shibata@hotaka.mtk.nao.ac.jp (SHIBATA, Katsunori, M.)
Subject: VSOP : vs04j
Cc: bushi@hotaka.mtk.nao.ac.jp, kameno@hotaka.mtk.nao.ac.jp,
        umemoto@hotaka.mtk.nao.ac.jp, kameya@miz.nao.ac.jp

Dear PI, 

I will sending herewith a PI letter for vs04j. 
FITS file will be sent to you with 4 mm MT. 

Best regards, 

K. M. Shibata
Mitaka correlator

===========================================
MITAKA Correlation Summary  1999/06/09

Obscode:vs04j
Obsdate:1999/04/28

PI:       The VSOP Survey Program

  Address:  Institute of Space and Astronautical Science, Hirabayashi Lab.
            3-1-1 Yoshinodai, Sagamihara, Kanagawa 229
            JAPAN

VS04j was treated as v99118 during correlation. 
We made the following Data quick look. 

1. Baselines vs. time plots and u-v plots were made for each correlation path. 

2. Delay residuals and rate residuals plots were made for all stations.
These were the results of fringe finding, so the station in which fringes
were not found showed large scattering. 

3. Amplitude and phase plots were made for baselines between Shanghai and
other stations. 

4. Autocorrelation bandpass plots were generated for all antennas for scan
on 'J1048+71'. 

5. Cross-correlation bandpass plots were made for baselines between
Shanghai and other stations for scan on 'J1048+71'. 

NOTES: 

TZ - Delay jump at about 02:40.

NT - Did not observe.

TR - VLBA to VSOP tape copies had not well down in the reverse path because
of recording qualities. No fringe was found during 01:32 - 03:30. S/N
ratios are very low. 

SH - A spurious was shown in auto-correlation of IF1. 


NOTES for REDUCTION:
The unit of output amplitude is arbitrary. Use ACCOR just after loading to
the AIPS. 

Set DIGICOR = -1 and DELCORR = -1 in FITLD. 

Delete NX and CL tables just after FITLD, then re-build by INDXR. 

DO NOT use PHNEG!!  These FITS data are no longer necessary to use PHNEG. 

IF YOU HAVE ANY QUESTION AND PROBLEM ABOUT FITS DATA, please contact with 
shibata@hotaka.mtk.nao.ac.jp.