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Extension Tubes

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  1. Explore Scientific - Rack and Pinion Focuser 2" Extension Tube

    Explore Scientific - Rack and Pinion Focuser 2" Extension Tube

    2" Extension tube for Explore Scientific Rack and Pinion focusers.

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    Model#: ESRPEXT2
    $21.99

  2. Explore Scientific - Rack and Pinion Focuser 1" Extension Tube

    Explore Scientific - Rack and Pinion Focuser 1" Extension Tube

    1" Extension tube for Explore Scientific Rack and Pinion focusers.

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    Model#: ESRPEXT1
    $18.99

  3. Explore Scientific - 5x Focal Extender 1.25" Barrel - 4 Elements

    Explore Scientific - 5x Focal Extender 1.25" Barrel - 4 Elements

    Provides excellent control of chromatic and spherical aberration, and a flatter field-of-view compared to standard barlows.

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    Model#: FE05-125
    Explore Scientific AstroCats Promo (ends July 18, 2015)!

    Regular Price: $115.99

    Special Price: $90.99

  4. Explore Scientific - 2x Focal Extender 1.25" Barrel - 4 Elements

    Explore Scientific - 2x Focal Extender 1.25" Barrel - 4 Elements

    Provides excellent control of chromatic and spherical aberration, and a flatter field-of-view compared to standard barlows.

    ...
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    Model#: FE02-125
    Explore Scientific AstroCats Promo (ends July 18, 2015)!

    Regular Price: $99.99

    Special Price: $74.99

  5. T2-29

    Baader Planetarium - T-2/M48 Expanding Ring

    Baader T-2 Female to M48 Male Expanding Ring # T2-29 2458110

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    Model#: T2-29
    $30.00

  6. Baader Planetarium - Spacer Tube 39mm for 3" RT Steeltrack, with 4" Dovetail

    Baader Planetarium - Spacer Tube 39mm for 3" RT Steeltrack, with 4" Dovetail

    The 3" RT Spacer allows changing back-focus by providing quick connect/disconnect spacing of the 3" RT Steeltrack Focuser (39mm spacing length).4" External Dovetail on one side for attachment of 3" RT Steeltrack Focuser ... Learn More
    Model#: FOC-SPCR
    $69.00

  7. Avalon Instruments Mini Modular Extender for M-Uno Declination L55 mm

    Avalon Instruments - Mini Modular Extender for M-Uno Declination L55 mm

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    FREE SHIPPING
    (48 States)
    Model#: AVMINIEXT055
    $215.00

  8. Avalon Instruments Extender for Avalon Tripod - 8" Height

    Avalon Instruments - Extender for Avalon Tripod - 8" Height

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    FREE SHIPPING
    (48 States)
    Model#: AVEXT
    $320.00

  9. Astro-Physics 8" Extension for 6" Eagle Pier

    Astro-Physics - 8" Extension for 6" Eagle Pier

    Please Note: We cannot ship Astro-Physics products to customers in Germany, Switzerland, Austria, France and Japan.

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    FREE SHIPPING
    (48 States)
    Model#: EAGLE6E8
    $350.00

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