
plan - use imregister / imsearch framework for spectra.db

relevant database usages:

use this for spectra.db ref ?
  average.code or average.Xg


spectra in spectra.db will have RA,DEC: join between tables using position

example queries:

spsearch 

/* structure for Spectra Registration Database */
typedef struct {
  char filename[64];
  char pathname[128];
  char telescope[32];
  char instrument[32];
 
  char objname[64];

  char mode (MEF?)
  
  float ra, dec;
  float exptime;
  float airmass;

  /* spectral range representation */
  float W0, W1, dW; 

  /* spectral range start, end; average value for nm / pixel */

  float sky;
  float bias;
  float fwhm;

  float telfocus;
  float xprobe, yprobe, zprobe;
  float dettemp;
  float teltemp[4];
  float rotangle;

  unsigned long int obstime;
  unsigned long int regtime;
} RegImage;  /* 360 bytes / image */


outstanding questions:

- convert spectral file to standard format on db insertion?
  - uniform keywords for wavelength calibration?
  - need header WCS
  - single FITS file
  - how to store discontiguous spectra? (MEF?)
  - 
