Instrument Information
INSTRUMENT_ID MCDIDS
INSTRUMENT_NAME MCDONALD INTENSIFIED DISSECTOR SCANNER
INSTRUMENT_TYPE SPECTROGRAPH
INSTRUMENT_HOST_ID MCD27M
INSTRUMENT_DESC
Instrument Overview
  ===================
    The Intensified Dissector Scanner (IDS) instrument, formerly
    used at the Cassegrain F/17.7 focus of the Harlan J. Smith 2.7m
    Telescope at McDonald Observatory, was decommissioned some time
    after March 1988 and before October 1994.  The information
    presented below was gleaned from Cochran, et al. (1992)
    [COCHRANETAL1992].
 
    The IDS was a dual aperture spectrograph with variable apertures
    fixed 52 arcsec apart on an east/west line.  Computer-controlled
    beam switching was available to alternate imaging through both
    apertures.
REFERENCE_DESCRIPTION unk