• Telescopes
        Up to 80mm
        --------------------------81mm - 110mm
        --------------------------111mm - 140mm
        --------------------------Larger than 140mm
      Reflectors (Newtonian)
        Up to 8 inches
        --------------------------Larger than 8 inches
        Up to 8 inches
        --------------------------10 - 20 inches
        --------------------------Larger than 20 inches
      Compound Telescopes
      Spotting Scopes
      --------------------------Test Category
  • Binoculars
      Standard (Up to 50mm)
      --------------------------Large (51mm - 99mm)
      --------------------------Giant (100mm and Larger)
  • Optical Accessories
      Barlow Lenses
        Fixed Focal Length Eyepieces
        --------------------------Reticle Eyepieces
        --------------------------Zoom Eyepieces
        Lunar and Planetary Filters
        --------------------------Nebula and Light Pollution Reduction Filters
        --------------------------Specialty Filters
      Finder Telescopes
        Unity (1x) and Red Dot Finders
        --------------------------Straight-Through Finders
        --------------------------Right-Angle Finders
      Focal Reducers
  • Other Accessories
      Adapters (Mechanical) and Rings
      --------------------------Alignment and Collimation
        Collimating Eyepieces
        --------------------------Laser Collimators
      Cases and Covers
      --------------------------Computer Accessories
      --------------------------Focusers and Focusing Accessories
      --------------------------Observing Aids (Everything Else)
      --------------------------Dew Prevention
  • Imaging
      Cameras - Film
      --------------------------Cameras - CCD and Webcams
      --------------------------Imaging Adapters and Accessories
      --------------------------Cameras - Digital
  • Mounts/Tripods
      Alt-Azimuth Mounts
      --------------------------Binocular Mounts
      --------------------------Equatorial Mounts
      --------------------------Go-To Mounts with Controllers
      --------------------------Piers and Tripods
      --------------------------Other Accessories (Wedges, Drives, Rings, etc.)
      --------------------------Digital Setting Circles and Object Locators
  • Solar
      White-Light Solar Filters
      --------------------------Narrowband Solar Filters
      --------------------------Solar Telescopes
      --------------------------Solar Observing Instruments and Accessories
  • Software/Publications
      Atlases and Maps
        Amateur Telescope Making
        --------------------------Computational Astrophysics
        --------------------------Education and Multimedia
        --------------------------Image Processing and Data Analysis
        --------------------------Satellite Tracking
        --------------------------Desktop Planetarium and Charting
        --------------------------Toolkits and Observing Utilities
        --------------------------Telescope Control
        --------------------------Space Simulation
      Books and Magazines
      --------------------------Web Sites
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