
Elixir uses several databases to store a variety of information.
One of these databases is the photometry database, with several
interface tools (status, nrphot, addstar, etc).  The other databases
are manipulated with the tools found in this directory.  In addition,
tools used to abstract the camera description, photcodes, and filters
are included here.

imregister   : add images to the image registration database (imreg.db)

imsearch     : find images in imreg.db

imsort       : add images to imreg.db and pass to elixir systems

imstatreg    : update stats to imreg.db (fwhm, flux, bias)

detregister  : add images to the detrend database

detsearch    : find images in the detrend database

photreg      : add photometry datapoints to zeropoint db (phot.db)

photsearch   : search phot.db

transreg     : add transparency points to database (trans.db)

transsearch  : search trans.db

photcode     : find photcode for given image

filtnames    : filter name lookups

cameraconfig : get configuration information for camera

As in all Elixir programs, a reference to a specific CCD in a MEF
image can be done with (file) (ccd) MEF, where the value of 'ccd' is
one of the valid extension names, associated in the header with the
keyword defined by CCDNUM-KEYWORD.  In addition, searches (imsearch,
detsearch) may be restricted to specific ccds with the -ccd flag,
which also takes the extension name ID.

