Data Set Overview
  =================
  The Seven-color Asteroid Survey (SCAS) was conducted at the IRTF on
  Mauna Kea, Hawaii from 1992 to 1994.  It consists of photometry in
  seven filters from 0.9 to 2.3 microns, lettered A through G in
  order of increasing wavelength.  The bandpasses were specifically
  designed to capture the essential mineralogic information present
  in infrared asteroid spectra.  The filter bandpasses were chosen to
  avoid the atmospheric water features at 1.4 and 1.9 microns.
 
  126 asteroids are included in this data set.
 
 
  Parameters
  ==========
  The reflectances have been normalized to band A, at 0.913 microns,
  and are thus referred to as B/A, C/A, D/A, E/A, F/A, and G/A.  The
  band difference B-D (actually the difference in the normalized
  values) is also tabulated as an indicator of band depth/continuum
  slope.  Also included are the RMS errors associated with each
  value.
 
  The B-D band difference is a strong indicator of the main source of
  variation in the SCAS data set.  In Clark, et al. (1995)
  [CLARKETAL1995] it is shown that B-D can be used to distinguish
  between typical S-class asteroid spectra and typical K-class
  spectra.  B-D essentially measures the depth of the 1-micron
  absorption feature, in which band B is located, as compared to the
  continuum just outside the 1-micron feature, where band D is
  located.
 
 
  Data
  ====
  The data are included in the ascii table 'scas.tab'.
 
 
  Ancillary Data
  ==============
  The filter FWHM and center wavelengths are tabulated in the label
  file 'scas.lbl'.

Confidence Level Overview
  =========================
  The user is referred to the paper in which this data was
  published:  Clark, et al. (1995) [CLARKETAL1995] for information on
  the confidence level of the data.
 
  Review
  ======
  This data set underwent external peer review on Mar. 29, 1996.