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(testing, sorry!) TN 98: Conventional Reduction of TOM1 data




  [ sorry about this, but I need to check that my E-mail works  ]
  [ after re-subscribing to the list; stupid mailer....         ]


  I've written a new Tech Note, number 98, describing my second attempt
at reducing some of the data Tom has taken.  This time, I follow
standard astronomical procedures, processing the measurements in
the "all-sky" mode (with a few twists).  You can read the report at

       http://stupendous.rit.edu/tass/technotes/tn0098.html

  I can apply this same technique to only a small fraction of 
all the Mark IV measurements, for two reasons:

             a) it requires a perfectly clear night
             b) only on the celestial equator are there enough 
                     standards to make it work

  I have in mind something like this two-step procedure for dealing
with the additional data:

             1) do "all-sky" reductions of data near the celestial
                    equator on clear nights to create a "primary"
                    catalog of stars which are calibrated directly
                    against the Landolt equatorial standards

             2) perform a semi-differential operation on the remaining
                    measurements, using the "primary" catalog as a
                    photometric reference.  The result will be a
                    "secondary" catalog, which may still be good
                    enough for many purposes.

  Comments?

                                             Michael Richmond