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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. Orion - 8 " f/8 Ritchey Cretien Optical Tube Assembly

    Orion - 8 " f/8 Ritchey Cretien Optical Tube Assembly

    * Ritchey-Chretien optical design produces superb flat-field, coma-free images that are superior to those achievable with conventional reflector or Schmidt-Cassegrain telescopes * One of the most compact Ritchey-Chretien astrographs available, at ... Learn More
    Model#: 8958
    $1,195.95

  2. Orion 10" f/8 Ritchey Cretien Optical Tube Assembly

    Orion - 10 " f/8 Ritchey Cretien Optical Tube Assembly

    Go after even the most elusive and faint deep-sky targets with the Orion 10" f/8.0 Ritchey-Chretien Astrograph. Featuring virtually coma-free optics for superb imaging performance, the Orion 10" f/8.0 Ritchey-Chretien Astrograph boasts a plethora of deluxe features

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    Model#: 8961
    $2,694.95

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