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Optical Tube Assemblies

Optical tube assemblies, commonly abbreviated by astronomers as OTAs are simply the tube of the telescope where the optics are internally located. OTAs can be helpful in a situation in which an observer has a compatible mount and doesn't want to buy a whole new telescope with a mount included. Optical Tube Assemblies can come in the form of Maksutov-Cassegrain, Astrographs, Reflectors, Refractors, Schmidt-Cassegrains and many others! With the right mounting connections and range of mount and tripod payload, OTAs are a great choice for changing optical type without changing the mount.

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  1. Explore Scientific - 152mm f/6.5 Achromatic Optical Tube Assembly *

    Explore Scientific - 152mm f/6.5 Achromatic Optical Tube Assembly *

    The AR152 (six-inch), with its larger aperture optics gathers 44% more light over the AR127 (five-inch) model, providing much brighter images and higher resolution

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    Model#: DAR152065-01
    WOW!! Explore Scientific 25% OFF Holiday Sale! ENDS DEC. 30th

    Regular Price: $749.99

    Special Price: $562.00

  2. Explore Scientific AR127 f/6.5 Air-Spaced Doublet Achromat Refractor

    Explore Scientific - AR127 f/6.5 Air-Spaced Doublet Achromat Refractor *

    AR127 f/6.5 Air-Spaced Doublet with EMD Coatings; Deluxe Two-Speed 2-inch Crayford Focuser; Cradle Rings with Handle and Vixen-Style Dovetail Mount; 8x50 Straight Finderscope; Enhanced 99% Reflective 2-inch Diagonal with 1.25-inch Adapter

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    (48 States)
    Model#: DAR127065-01
    WOW!! Explore Scientific 25% OFF Holiday Sale! ENDS DEC. 30th

    Regular Price: $599.99

    Special Price: $449.49

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