NASA Photo ID: STS056-28-020       File Name: 10073217.jpg
  Film Type: 35mm                    Date Taken: 04/17/93
  Title: STS-56 onorbit view of Discovery's, OV-103's, payload bay with ATLAS-2 pallet
  Description:
  During STS-56, the Atmospheric Laboratory for Applications and Science 2 
  (ATLAS-2) unpressurized spacelab pallet and its experiment equipment was 
  documented in the payload bay (PLB) of Discovery, Orbiter Vehicle (OV) 103.  
  ATLAS-2 equipment and instruments include:  port conical scan sensor 
  (cylindrical-shaped device at far right); the millimeter-wave atmospheric 
  sounder (MAS) antenna (dish-shaped device at pallet center); the starboard 
  conical scan sensor (small cylinder at far left); and the atmospheric trace 
  module spectroscopy (ATMOS) (box behind conical sensor at far left). 
  Smaller  ATLAS-2 instruments located in the center of the pallet include
  (left to  right): Active Cavity Radiometer Irradiance Monitor (ACRIM or
  ACR); Solar  Constant Instrument (SOLCON); Solar Spectrum Instrument
  (SOLSPEC); and MAS  (large box just below antenna).  The Shuttle Pointed
  Autonomous Research Tool  for Astronomy 201 (SPARTAN-201) is missing as it
  was in the midst of  separation from OV-103 when the photo was made.  The
  remote manipulator  system (RMS) is deployed from its location on the port
  sill longeron.  The  PLB aft bulkhead, the vertical tail, and the orbital
  maneuvering system (OMS)  pods are backdropped against the blackness of
  space. The moon and a thin blue  line on the Earth's limb can be seen in
  the background.    
  
  Subject terms:
  ATMOSPHERIC PHYSICS                     
  DISCOVERY (ORBITER)                     
  EARTH ATMOSPHERE                        
  EARTH LIMB                              
  MOON                                    
  PALLETS                                 
  PAYLOAD BAY                             
  SOLAR PHYSICS                           
  SPACE SHUTTLE PAYLOADS                  
  SPACEBORNE ASTRONOMY                    
  SPACEBORNE EXPERIMENTS                  
  STS-56                                  
  TAIL ASSEMBLIES                         
  

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