From heyer@aida.astro.umass.edu Tue Dec  2 11:33:09 2003
Date: Mon, 1 Dec 2003 21:39:24 -0500
From: Mark Heyer <heyer@aida.astro.umass.edu>
To: "Min S. Yun" <myun@bonito.astro.umass.edu>
Subject: Re: sirtf fls galaxies

Min,
  Yes -- transferring 1000 scans in a single command will 
crash the bridge computer.  I tend to do these in much small 
chunks (20-40 dat a time).  To find the scan numbers that go 
with a certain source, I would recommend using SPA.
Follow these steps:

1) create a spa data file with the spi command:
    spi n6373.spa  (answer some questions: yes to initialize file
                                           no to diagnostic dump)
2) launch mcspa
   mcspa n6373.spa  (from a freshly created file, you will get a 
                      S1> prompt. 
3) set current directory to raw data
   cd t        (the prompt will not change to T>
4) get a general listing of the t file contents
   lis
    this will show all of the current scans in the t file
    generally, these are mostly pointing data so they come in 
    blocks of 20+ scans or so.
    Hopefully, you have some idea of the  scan numbers (within 500)
    As an example, the lis command shows a bunch of scans.  You think 
    N6373 scans are somewhere between scans 11500 and 12000
5)  11500 to 12000 log   The scans do not have to be continuous between 
                        this range.
   The log command will list scan, source name, ra, dec, .... for all 
   scans between 11500 and 12000.  This will allow you to identify
   those scans associated with N6373.

   Note that for the log command, 
   all that is being passed thru the bridge PC is the scan 
   header so it should not overload/crash the bridge.

Mark