Meade ETX90-RT Observer Maksutov-Cassegrain Telescope

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Featuring a Maksutov-Cassegrain optical design and Ultra-High Transmission Coatings (UHTC), the Meade ETX90-RT Observer Telescope is ideal for detailed lunar and planetary observation at high magnifications with bright, high-contrast results. This kit includes a portable steel tripod, an equatorial tilt plate, a hard carry case, and a flip mirror to let light focus to the rear of the telescope.

Key Features: Meade ETX90-RT Observer Maksutov-Cassegrain Telescope

  • 90mm f/13.8 Maksutov-Cassegrain telescope with Ultra-High Transmission Coatings (UHTC); 1250mm focal length
  • AudioStar hand box with over 30,000 objects in its database & a built-in speaker
  • Removable optical tube assembly (OTA), allowing the user to take the scope off of the fork mount for customization
  • Includes two 1.25 inch Super Plössl Eyepieces: 26mm (48x) & 9.7mm (129x), and a Red Dot Viewfinder to help aim the scope
  • Includes a hard carry case for the mount/optical tube and accessories, and a tripod bag for the tripod


  • Clear Aperture: 90mm
  • Optical Design: Maksutov-Cassegrain
  • Optical Coatings: UHTC
  • Focal Length: 1250mm
  • Focal Ratio: f/13.8
  • Resolving Power (Dawes' Limit): 1.29 arc-seconds
  • Viewfinder: Red Dot
  • Eyepiece(s): 1.25 inch Super Plössl Eyepieces: 26mm (48x) and 9.7mm (129x)
  • Dovetail: Vixen-Style
  • Mount Type: Fork type; double-tine
  • Hand Controller: AudioStar
  • Object Database: 30,000 objects
  • Tripod: Full Size Steel Tripod with EQ tilt plate
  • Time Chip: Yes
  • Assembled Product Weight: 8.6kg
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Product Specification

Diagonal 90 degree
Diameter (mm) 90
Eyepiece 1 26 mm
Eyepiece 2 9.7 mm
Finderscope Red-Dot Finder
Focal Length (mm) 1250
Focal Ratio (f/) 13.8
Included Accessories 2x Eyepieces, Red-Dot Finder, 90 Degree Diagonal, Tripod, Case
Mount Type Computerised Go To
Optical Design Maksutov-Cassegrain
Manufacturer Link Meade
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Product Code: 1613195-wex Manufacturers Part Number: 205004 Got a question? Get it answered...