NASA Photo ID: STS056(E)015        File Name: 10072687.jpg
  Film Type: 4x5 BW                  Date Taken: 04/17/93
  Title: STS-56 ESC Earth observation of metropolitan Philadelphia, PA at night
  Description:
  STS-56 electronic still camera (ESC) Earth observation image shows 
  metropolitan Philadelphia, Pennsylvania at night as recorded on the 48th 
  orbit of Discovery, Orbiter Vehicle (OV) 103.  The image was recorded with
  an  image intensifier on the Hand-held, Earth-oriented, Real-time,
  Cooperative,  User-friendly, Location-targeting and Environmental System
  (HERCULES).  HERCULES is a device that makes it simple for shuttle
  crewmembers to take  pictures of Earth as they merely point a modified 35mm
  camera and shoot any  interesting feature, whose latitude and longitude are
  automatically  determined in real-time.  Center coordinates on this image
  are 39.970 degrees  north latitude and 75.157 degrees west longitude. 
  Digital file name is  ESC04033.IMG.           
  Subject terms:
  DARKNESS                                
  DELAWARE BAY (US)                       
  DISCOVERY (ORBITER)                     
  EARTH OBSERVATIONS (FROM SPACE)         
  ELECTRO-OPTICAL PHOTOGRAPHY             
  ELECTRONIC STILL CAMERA                 
  NIGHT                                   
  PENNSYLVANIA                            
  STS-56                                  
  

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