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Orion Telescopes

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Beginner
*2nd* Orion StarMax 90mm TableTop Maksutov-Cassegrain
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This product is no longer available for purchase.


Item #  70022
  • Best for viewing
    Lunar & planetary
  • Best for imaging
    Lunar & planetary
  • User level
    Beginner
  • Optical design
    Maksutov-Cassegrain
  • Optical diameter
    90mm
  • Focal length
    1250mm
  • Focal ratio
    f/13.9
  • Optics type
    Spherical
  • Eyepieces
    3-Element 25.0mm,10.0mm (1.25")
  • Magnification with included eyepieces
    50x, 125x
  • Resolving power
    1.29arc*sec
  • Lowest useful magnification
    13x
  • Highest useful magnification
    180x
  • Highest theoretical magnification
    212x
  • Limiting stellar magnitude
    12.5
  • Optical quality
    Diffraction limited
  • Finder scope
    EZ Finder II
  • Focuser
    Internal
  • Diagonal degrees
    1.25" 90° Mirror Star
  • Secondary mirror obstruction
    29mm
  • Secondary mirror obstruction by area
    10%
  • Mount type
    Altazimuth
  • Polar-axis scope
    Not available
  • Tube material
    Aluminum
  • Tripod material
    Wood
  • Length of optical tube
    10.0 in.
  • Weight, optical tube
    3.7 lbs.
  • Weight, mount/tripod
    2.8 lbs.
  • Weight, fully assembled
    6.5 lbs.
  • Additional included accessories
    Other included items are not always the same between a new and a second. Seconds may be older versions of the new product, or may be customer returns where accessory substitutions have been made.
  • Other features
    2nds are covered by Orion's Satisfaction Guarantee
  • Warranty
    One year

Orders received by noon Pacific Time for in-stock item the same business day. Order received after noon will ship the next business day. When an item is not in-stock we will ship it as soon as it becomes available. Typically in-stock items will ship first and backordered items will follow as soon as they are available. You have the option in check out to request that your order ship complete, if you'd prefer.

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