[vsnet-chat 3561] Re: [vsnet 2052] Magnitude data collaboration between projects

[Brian Skiff <bas@lowell.edu>]

     A combined database of RA/Dec, date, and magnitudes from all the
amateur-based surveys would be very useful in many areas of astronomy.
In order to work well, the photometry in particular would have to be
calibrated in some better way than is done at present.  For many surveys,
use of the high-precision photometry from Tycho-2 might be enough to get
either standard V or R magnitudes from the data.
     Has the MISAO group considered starting to make digital scans of 
existing emulsion-based surveys?  I would think having the films/plates
of Takamizawa, Dahlmark, Collins, et al. scanned and analyzed in the same way
as you have been doing CCD images would also be of great value.  The
additional time baseline would provide "instant" lightcurves for huge numbers
of variables now merely detected as a change on two or three dates.
     Similarly, would you be prepared to collect CCD data provided by others?
This would mean having huge amounts of disc-storage available.

\Brian

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