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# IPP Data & DVO Distribution

This is the PS1 internal data distribution server.  

Data is distributed in several formats.  Here is an explanation of the
differences:

* DVO Databases : these files contain the DVO-database format
  information.  Each directory below is a snapshot of one of the
  working DVO databases used by the IPP system.  The 3pi database
  snapshots include measurements from the single exposures ("camera
  smfs"), consisting primarily of the psf modeling of sources, along
  with some minor extended source information (moments, kron radii &
  magnitudes).  These databases have been calibrated astrometrically
  and photometrically.  2MASS photometry is included in all 3pi
  nightly science versions below, WISE and SuperCOSMOS have been added
  to certain versions.  The snapshots represent stages in the
  evolution of the calibration analysis and the merge of external
  photomety.  For more detail, see the summary description for each
  database.

@ DVO Database  	       : plain : title : Comment
@ 3pi.20120509 	       : dir   : dir1  : DVO Database Released 2012.05.09, ubercal + relphot + relastro (pm + par)
@ 3pi.20120525 	       : dir   : dir2  : DVO Database Released 2012.05.25, ubercal + relphot + relastro (pm + par)
@ 3pi.20120606 	       : dir   : dir1  : DVO Database Released 2012.06.06, ubercal + relphot + relastro (pm + par)
@ 3pi.20130227 	       : dir   : dir1  : DVO Database Released 2013.02.27, ubercal + relphot + relastro (pm + par)
@ 3pi.20140621	       : dir   : dir1  : DVO Database Released 2014.06.21, ubercal + relphot + relastro (pm + par), KH effect
@ LAP.3pi.PV1 	       : dir   : dir1  : LAP 3pi DVO Database Released 2013.08.12, ubercal + relphot + relastro (pm + par)

* Allsky Summary Tables : these files contain mean photometry data for
  a subset of brighter objects.  These files are CSV or FITS format
  tables, with one file for large regions bounded by lines of constant
  RA and DEC.

@ Allsky Summary Tables  : plain : title : Comment
@ 3pi.20120525.tables  : dir   : dir1  : Allsky Summary Tables for 3pi.20120525 (FITS & CSV formats)
@ 3pi.20130227.tables  : dir   : dir1  : Allsky Summary Tables for 3pi.20130227 (FITS & CSV formats)

* Other Useful Data : various data items of interest.  the Ubercal
  zero point tables provide an archive reference of the ubercal zero
  point tables provided by Eddie Schlafly.

@ Other useful data
@ catdir.syn.test      : dir   : dir1  : Test DVO Database
@ ubercal.data         : dir   : dir1  : Ubercal zero point tables
