Happily Serving You in the Same Location for Over 58 Years!

Welcome!

Extension Tubes

Items 21 to 40 of 46 total

per page
Page:
  1. 2

Set Descending Direction
  1. Orion 1.25" Standard Tele-Extender

    Orion - 1.25" Standard Tele-Extender

    Orion tele-extenders permit high-magnification "eyepiece projection" photography of the Moon and planets with a Schmidt-Cassegrain telescope. Orion tele-extenders are designed to fit all Celestron and Meade Schmidt-Cassegrain telescopes.

    ...
    Learn More
    Model#: 05125
    $25.99

  2. 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

  3. Starlight Instruments - Riser, 2.0 " Diameter, adds 3.75 " to Height

    Starlight Instruments - Riser, 2.0 " Diameter, adds 3.75 " to Height

    Risers attach to the base of a focuser to 'lift' the entire focuser. Unless otherwise noted, the end of the riser which attaches to the OTA will be the same thread and diameter as the original focuser body.

    ...
    Learn More
    Model#: R20-3.75
    $69.00

  4. Shelyak Instruments - Short EP holder

    Shelyak Instruments - Short EP holder

    Short eyepiece holder for Lhires III ... Learn More
    Model#: BA0018
    $65.47

  5. 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
    $29.95

  6. 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

    Regular Price: $43.00

    Special Price: $35.95

  7. Lumicon - 1.25" Dropin Extension Tube with 1" Eye Piece Push Back

    Lumicon - 1.25" Dropin Extension Tube with 1" Eye Piece Push Back

    ... Learn More
    Model#: LA1015

    Regular Price: $29.00

    Special Price: $24.95

  8. 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

    Regular Price: $29.00

    Special Price: $24.95

  9. 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

  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

    ...
    Learn More
    Model#: ADPT2X2.1E
    $75.00

  11. 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

  12. 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

  13. 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

  14. 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
    $29.95

  15. 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
    $29.95

  16. Meade - APO Focuser-Sleeve Extension Tube

    Meade - APO Focuser-Sleeve Extension Tube

    Meade APO Focuser-Sleeve Extension Tube (50mm) 07364 can allow telescope with focus travel limitations to be used in terrestial observing ... Learn More
    Model#: 07364
    $50.00

  17. Optec - AP2.7 knurled female threaded retaining ring, 1/10" thick.

    Optec - AP2.7 knurled female threaded retaining ring, 1/10" thick.

    AP2.7 Retaining RingOverall Height: 0.10" (2.5mm)Outside Diameter: 3.0" (88.9mm)Clear Aperture: 2.69" (68 mm)Weight: 0 ... Learn More
    Model#: 19888
    $15.00

  18. Optec - AP2.7 x 24tpi Extension Tube, 3" length.

    Optec - AP2.7 x 24tpi Extension Tube, 3" length.

    AP2.7 Extension - 3" LengthOverall Height: 3.38" (85.8mm)Clear Aperture: 2.52" (64mm)Weight: 8.2 oz (230 g)Back-focus Usage: 3.00" (76 ... Learn More
    Model#: 19886
    $40.00

  19. Optec - AP2.7 x 24tpi Extension Tube, 1-1/2" length.

    Optec - AP2.7 x 24tpi Extension Tube, 1-1/2" length.

    AP2.7 Extension - 1-1/2" LengthOverall Height: 1.87"  (47.5mm)Clear Aperture: 2.52" (64mm)Weight: 2.4 oz (70 g)Back-focus Usage: 1.50" (38 ... Learn More
    Model#: 19885
    $30.00

  20. Optec - AP2.7 x 24tpi Extension Tube, 1" length.

    Optec - AP2.7 x 24tpi Extension Tube, 1" length.

    AP2.7 Extension - 1" LengthOverall Height: 1.38" (35.0mm)Clear Aperture: 2.52" (64mm)Weight: 1.8 oz (55 g)Back-focus Usage: 1.00" (25 ... Learn More
    Model#: 19884
    $30.00

Items 21 to 40 of 46 total

per page
Page:
  1. 2

Set Descending Direction