CIRCULARLY VARIABLE FILTER
==========================

  Instrument Overview                                                         
  ===================                                                         
    This document describes the instrument used to obtain the infrared        
    spectrum of 951 Gaspra reported in Goldader et al. 1991, A. J.            
    102, 1503-1509 [GOLDADERETAL1991].  The instrumentation consisted         
    of a double CVF with a liquid nitrogen cooled InSb photometer.            
    The short half of the CVF (denoted DCS) covered the region from           
    ~0.8 - 1.6 microns with 3% resolution, and the long half (denoted         
    DCL) covered ~1.5 - 2.5 microns at 5% resolution.  For this               
    spectrum, every other position of the CVF was sampled for the DCS         
    data.null

References
==========

Bugayevskiy, L. M., and Snyder, J. P., 1995, Map    
        projections: A reference manual, Taylor & Francis, London and Bristol,
        Pennsylvania, 328 pp.