Categories:
  • Telescopes
      Refractors
      ----------------------------
        Up to 80mm
        ---------------------------- 81mm - 110mm
        ---------------------------- 111mm - 140mm
        ---------------------------- Larger than 140mm
        ----------------------------
      Reflectors (Newtonian)
      ----------------------------
        Up to 8 inches
        ---------------------------- Larger than 8 inches
        ----------------------------
      Compound Telescopes
      ----------------------------
        Schmidt-Cassegrain
        ---------------------------- Maksutov-Cassegrain
        ---------------------------- Maksutov-Newtonian
        ---------------------------- Ritchey-Chretien
        ---------------------------- Other
        ----------------------------
      Dobsonians
      ----------------------------
        Up to 8 inches
        ---------------------------- 10 - 20 inches
        ---------------------------- Larger than 20 inches
        ----------------------------
      Spotting Scopes
      ---------------------------- Test Category
      ----------------------------
  • Binoculars
      Standard (Up to 50mm)
      ---------------------------- Large (51mm - 99mm)
      ---------------------------- Giant (100mm and Larger)
      ----------------------------
  • Optical Accessories
      Barlow Lenses
      ---------------------------- Binoviewers
      ---------------------------- Diagonals
      ---------------------------- Filters
      ----------------------------
        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
      ---------------------------- Eyepieces
      ----------------------------
        Fixed Focal Length Eyepieces
        ---------------------------- Reticle Eyepieces
        ---------------------------- Zoom Eyepieces
        ----------------------------
  • Other Accessories
      Adapters (Mechanical) and Rings
      ---------------------------- Alignment and Collimation
      ----------------------------
        Collimating Eyepieces
        ---------------------------- Laser Collimators
        ---------------------------- Other
        ----------------------------
      Cases and Covers
      ---------------------------- Computer Accessories
      ---------------------------- Focusers and Focusing Accessories
      ---------------------------- Observing Aids (Everything Else)
      ---------------------------- Dew Prevention
      ----------------------------
  • Solar
      Solar Telescopes
      ---------------------------- White-Light Solar Filters
      ---------------------------- Narrowband Solar Filters
      ---------------------------- Solar Observing Instruments and Accessories
      ----------------------------
  • Software/Publications
      Atlases and Maps
      ---------------------------- Books and Magazines
      ---------------------------- Software
      ----------------------------
        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
        ----------------------------
      Web Sites
      ----------------------------
  • Mounts/Tripods
      Alt-Azimuth Mounts
      ---------------------------- Binocular Mounts
      ---------------------------- Equatorial Mounts
      ---------------------------- Go-To Mounts with Controllers
      ---------------------------- Other Accessories (Wedges, Drives, Rings, etc.)
      ---------------------------- Piers and Tripods
      ---------------------------- Digital Setting Circles and Object Locators
      ----------------------------
  • Imaging
      Cameras - Film
      ---------------------------- Cameras - Digital
      ---------------------------- Cameras - CCD and Webcams
      ---------------------------- Imaging Adapters and Accessories
      ----------------------------
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