[vsnet-chat 1387] ubvri photometry

[aah@nofs.navy.mil]

As part of my reprocessing of old CCD data, I have posted to
    http://ftp.nofs.navy.mil/pub/outgoing/aah/photom/ubvri.cat
a list of 24023 stars with at least BV (and often BVRI or UBVRI) photometry.  The
requirements to make this list were:
     (a) Detection in both B and V on at least two photometric nights
     (b) V and (B-V) errors less than 0.05mag standard deviation (the mean errors
         should be less than this).
     (c) astrometric errors less than 0.3arcsec in both RA and DEC (this gets rid
         of most of the crowded field problems).
Many of the stars from the 'sequence' subdirectory made it into this list.
  You may make use of this list for any personal research, but you must contact me
and get permission before using the data in any publication.
  The catalog will be updated on an irregular basis as I work back through another
decade of photometry.
Arne

--------------------------------------------------------------------
Arne Henden                               Instruments/software/CCDs
US Naval Observatory Flagstaff Station    Cepheids/photometry/IR
P.O. Box 1149                             http://ftp.nofs.navy.mil  
Flagstaff, AZ 86002-1149                  Voice: (520)779-5132
aah@nofs.navy.mil                         FAX:   (520)774-3626

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