Orion 180mm Maksutov Cassegrain OTA

  • Sale
  • Regular price $999.99
  • Orion 180mm Maksutov Cassegrain OTA

    • Sale
    • Regular price $999.99
    • ITEM #



    Orion 180mm Maksutov Cassegrain OTA

    Orion 180mm Maksutov Cassegrain OTA

    Looking for something to satisfy your appetite for power? Try an Orion big Mak! For the most demanding enthusiast, the Orion 180mm Mak OTA sets a new standard for superb high-power performance in a remarkably compact design. With 7 inches of aperture and that long focal length Mak aficionados love, you'll get tack-sharp, high-contrast views and clearly defined photos with subtle detail.

    The Orion 180mm (7.1 inch) Maksutov-Cassegrain optical system has 2,700mm focal length (f/15). With 44% greater light grasp than a 150mm Mak, you'll get brighter images and better resolution. No other optical design can deliver such potent optical specifications in a package that measures just 22 inch long and weighs in at less than 16 lbs. The meniscus lens of the Orion 180mm Maksutov Cassegrain OTA is fully multicoated for maximum light transmission, further enhancing image brightness. The visual back accepts 1.25" eyepieces and accessories, and a dovetail bracket on the rear cell accepts any Orion finder scope or EZ Finder. The dovetail rail on the underside of the tube attaches to your Orion SkyView Pro, Sirius, or Atlas mount.

    The Orion 180 "Big" Mak OTA offers the amazing image definition Maks are known for, but with a hefty 7 inch of aperture for brighter images. One-year limited warranty.

    Orion Product Number: 9969

    Drop-Ship Policy Note: To expedite your order, this telescope (or mount) will be drop-shipped directly from Orion's warehouse to you and availability will be based on Orion's inventory levels. OPT will contact you immediately if there are any delays on shipment and will provide an estimated lead-time. If the product is not readily available, you will have the option to keep the order open with a 10% deposit. Additional Orion items may be drop-shipped along with the telescope (or mount), or shipped directly from our own OPT stock. Non-Orion items will be shipped directly from the OPT warehouse. As a courtesy, OPT will cover all costs for splitting orders and separate shipments.

    If a return issue should arise with an Orion drop-ship item, please note that OPT will be required to issue a minimum 10% restocking fee for its return to Orion. With this exception, all other conditions of the OPT return policy apply. Please feel free to call us at 1-800-483-6287or e-mail us if you have any questions on Orion Drop-Ship product availability or on this policy. We're here to serve you!

    Additional Information

    Aperture178 mm (7")
    Case IncludedNo
    CD ROMs IncludedStarry Night SE
    Dew Shield IncludedNo Sold Separately
    Diagonal Included Sold Separately
    Exterior ColorOrion Grey Pearl
    Focal Ratiof/15
    GPS includedNo
    Hand Controller includedNo
    Highest Useful Magnification300x
    Limiting Stellar Magnitude13.9
    Mount Type OTA Only
    Optical CoatingsCoated
    Optical DesignCassegrain
    OTA Length22.5"
    OTA Mount TypeStyle Dovetail
    OTA Weight15.9 lbs.
    Power Adapter Included Does Not Require Power
    Telescope SeriesOrion Optical Tube Assemblies
    Tripod Type Included Sold Separately
    Warranty1 Year Warranty

    Questions & Answers

    Ask a Question
    • What is the % of obstruction by the meniscus lens?

      According to Orion, the mirrored secondary part of the meniscus has a diameter of 41mm (22.8% by diameter), but the secondary baffle tube is angled outward toward the primary and leads to a total obstruction closer to 50-52mm (27.8-28.9% by diameter).

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