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Extension Tubes

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  1. 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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    Model#: EAGLE6E8
    $350.00

  2. Astrodon 1.25" Eyepiece Extender

    Astrodon - 1.25" Eyepiece Extender

    This eyepiece extension is designed to work with all Astrodon Manual Off-Axis Guiders, or MOAG's.

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    Model#: MOAG-EYE
    $28.00

  3. 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

  4. 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

  5. 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
    $99.99

  6. 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 Fireworks All Month Long Sale (ends July 31, 2016)!

    Regular Price: $149.99

    Special Price: $119.99

  7. 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

  8. 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

  9. iOptron - iEQ45 Extension Bar

    iOptron - iEQ45 Extension Bar

    This is the extension bar for the iEQ45. This attaches to the original bar and will create more counterbalance weight. ... Learn More
    Model#: 8026
    $48.00

  10. JMI - 2 " Enhanced Extension Tube (2.13 ")

    JMI - 2 " Enhanced Extension Tube (2.13 ")

    Enhanced extension tubes include a compression ring and 48mm filter threads. 2" diameter x 2.13" height

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    Model#: ADPT2X2.1E
    $75.00

  11. JMI - 2 " Enhanced Extension Tube (2.63 ")

    JMI - 2 " Enhanced Extension Tube (2.63 ")

    Enhanced extension tubes include a compression ring and 48mm filter threads. See the Adapter Comparison Chart.2" diameter x 2 ... Learn More
    Model#: ADPT2X2.6E
    $79.00

  12. JMI - Extension Tube 1.25 " dia. x 1.6 " ht

    JMI - Extension Tube 1.25 " dia. x 1.6 " ht

    Extends the range of low-profile focusers. 1.25″ diameter x 1 ... Learn More
    Model#: ADPT1EXT
    $45.00

  13. JMI - Extension Tube 2 " dia. x 1.5 " ht

    JMI - Extension Tube 2 " dia. x 1.5 " ht

    Extends the range of low-profile focusers. 2″ diameter x 1 ... Learn More
    Model#: ADPT2EXT
    $49.00

  14. JMI - Extension Tube 2 " dia. x 2.5 " ht

    JMI - Extension Tube 2 " dia. x 2.5 " ht

    Extends the range of low-profile focusers. 2″ diameter x 2 ... Learn More
    Model#: ADPT2EXTL
    $59.00

  15. Lumicon - 1.25 Drop-in Extension Tube 3 Push Back.

    Lumicon - 1.25 Drop-in Extension Tube 3 Push Back.

    The Lumicon 1.25" Drop-in Extension Tube, 3" Push Back, drops into 1.25" eyepiece holders and accepts 1.25" eyepieces & accessories. Provides an extension range of 1" to 3.25" ... Learn More
    Model#: LA1020
    $33.95

  16. Lumicon - 1.25" Dropin Extension Tube with 1" Eye Piece Push Back
  17. Lumicon - 1.25" Thread-in Extension Tube with 1" Eyepiece Push-back

    Lumicon - 1.25" Thread-in Extension Tube with 1" Eyepiece Push-back

    The Lumicon 1.25in Threadin Extension Tube with 1in Eye Piece Push Back threads into 1.25" eyepieces and is for small focus extension. Provides extra reach of 0 to 1" ... Learn More
    Model#: LA1010
    $33.95

  18. Lumicon - 2 " Extension Tube 1.5 Push-Back Drop-in

    Lumicon - 2 " Extension Tube 1.5 Push-Back Drop-in

    The Lumicon 2 inch Drop-in Extension Tube, 1.6" Push-Back, drops into 2" eyepiece holders, and accepts 2" eyepieces & accessories. Provides a minimum extension of 1.6". Includes 2"/48mm filter threads ... Learn More
    Model#: LA1035
    $39.95

  19. Lumicon - 2in Dropin Extension Tube with 1in Push Back

    Lumicon - 2in Dropin Extension Tube with 1in Push Back

    The Lumicon 2in Dropin Extension Tube with 1in Eyepiece Push Back drops into 2" eyepiece holders and accepts 2" eyepieces & accessories. Moves the eyepiece a minimum of 1" back. Includes 2"/48mm filter threads ... Learn More
    Model#: LA1030
    $39.95

  20. Lumicon - 2in Thread-in Extension Tube with 2in Push-Back

    Lumicon - 2in Thread-in Extension Tube with 2in Push-Back

    The Lumicon 2in Threadin Extension Tube with 2in Eye Piece Push-Back threads into 2" eyepieces. Provides an extension range of the eyepiece from 0 to 2". Includes 2"/48mm filter threads ... Learn More
    Model#: LA1025
    $39.95

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