Extension Tubes

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  1. Astrodon - 1.25" Eyepiece Extender

    $28.00
    SKU: ADO-MOAG-EYE

    Ships in 3-5 Days

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

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

    $85.00
    SKU: R20-3.75

    Ships in 3-5 Days

    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.

  3. Starlight Instruments - Riser, 2.0 " Diameter, adds 0.65 " to Height

    $60.00
    SKU: R20-0.65

    Ships in 3-5 Days

    Riser, 2.0" Diameter, adds 0.65" to HeightRisers attach to the base of a focuser to 'lift' the entire focuser
  4. Starlight Instruments - Riser, 2.0 " Diameter, adds 1.0 " to Height

    $65.00
    SKU: R20-1.0

    Ships in 3-5 Days

    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.

  5. Starlight Instruments - Riser, 2.0 " Diameter, adds 1.4 " to Height

    $65.00
    SKU: R20-1.4

    Ships in 3-5 Days

    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.

  6. Starlight Instruments - Riser, 2.0 " Diamter, adds 2.75 " to Height

    $75.00
    SKU: R20-2.75

    Ships in 3-5 Days

    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.

  7. Takahashi - 2" Extension Tube

    $163.00
    SKU: TAK-TKP31112

    In stock

    This 2" extension tube by Takahashi is compatible with the TOA-130.

  8. TeleVue - 2" Eyepiece Barrel Extender

    Regular Price: $30.00

    You Pay: $28.95

    SKU: TEL-EBX-2120

    In stock

    Reduces focuser travel with 55 Plossl. Includes filter threads

  9. Tele Vue - 2" Extension Tube for 2" Focusers

    Regular Price: $65.00

    You Pay: $58.95

    SKU: TEL-X2C-0008

    In stock

    The TeleVue Extension Tube - X2C-0008 provides an additional 2" of focuser travel length which can sometimes be necessary when doing photography through many scopes - particularly when the 2" diagonal is removed.

  10. Shelyak - Short EP holder

    $65.47
    SKU: SHE-BA0018

    Ships in 7-10 Days

    Short eyepiece holder for Lhires III
  11. Optec - AP2.7 knurled female threaded retaining ring, 1/10" thick.

    $15.00
    SKU: OPT-19888

    Ships in 3-5 Days

    AP2.7 Retaining RingOverall Height: 0.10" (2.5mm)Outside Diameter: 3.0" (88.9mm)Clear Aperture: 2.69" (68 mm)Weight: 0
  12. Optec - 2-" to 3"x 24 tpi male threaded mount.

    $95.00
    SKU: OPT-17666

    Ships in 3-5 Days

    The 2-inch to 3-inch thread adapter was developed to easily adapt the Apogee and SBIG cameras and filters wheels for the TCF-S focuser.By holding tight tolerances (+/- 0.003") Optec has achieved a slip-fit that is second-to-none
  13. Optec - AP2.7 x 24tpi Extension Tube Set, 4-piece.

    $115.00
    SKU: OPT-19880

    Ships in 3-5 Days

    Provides ¼” incremental extensions from ½” to 3-¼” Includes ½”, ¾”, 1”, and 1- ½” extensions (#19891 through #19894)AP2
  14. Optec - AP2.7 x 24tpi Extension Tube Set, 5-piece.

    $150.00
    SKU: OPT-19881

    Ships in 3-5 Days

    Includes ½”, ¾”, 1”, 1- ½”, and 3” extensions (#19891 through #19895)AP2
  15. Optec - AP2.7 x 24tpi Extension Tube, 1/2" length.

    $30.00
    SKU: OPT-19882

    Ships in 3-5 Days

    AP2.7 Extension - 1/2" LengthOverall Height: 0.88"  (22.4mm)Clear Aperture: 2.52" (64mm)Weight: 1.0 oz (30 g)Back-focus Usage: 0.50" (12
  16. Optec - AP2.7 x 24tpi Extension Tube, 3/4" length.

    $30.00
    SKU: OPT-19883

    Ships in 3-5 Days

    AP2.7 Extension - 3/4" LengthOverall Height: 1.13" (28.7mm)Clear Aperture: 2.52" (64mm)Weight: 1.4 oz (40 g)Back-focus Usage: 0.75" (19
  17. Optec - AP2.7 x 24tpi Extension Tube, 1" length.

    $30.00
    SKU: OPT-19884

    Ships in 3-5 Days

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

    $30.00
    SKU: OPT-19885

    Ships in 3-5 Days

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

    $40.00
    SKU: OPT-19886

    Ships in 3-5 Days

    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
  20. TeleVue - 3.5" Long Extension*

    Regular Price: $65.00

    You Pay: $58.95

    SKU: TEL-X3C-0009

    In stock

    The TeleVue 3.5" extension tube includes brass clamp ring

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