[filmscanners] Scanning map question

["HPA" <tom@historicphotoarchive.com>]

I have to scan a 18x22" map to produce a SuperB 13x19 print.  Poor condition
map needs lots of work.  I am running out of size in PS7.  I want to scan as
high res as possible for retouching sake, then drop down to stitch them.  I
can scan up to 1800dpi.  The question is: what would be my final values in
'image size' when i went to stitch them together?  it would take all day to
experiment

I am scanning the map greayscale 16bit, and will make a separate scan of old
paper texture, and make final print in color for paper texture only and run
it through a second time for BO printing of map. G4, OSX.2, PS7, 1.2 gig RAM

As an alternative, i can shoot a 4x5 with a vacuum easel and scan that,
anybody have any ideas that can get this job done without spending all day
on it?  thanks

Tom Robinson

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