Extension Tubes

Showing 1 to 20 of 89 total
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  1. Lumicon - 1.25" Dropin Extension Tube with 1" Eye Piece Push Back

    $14.95
    SKU: LMC-LA1015

    Wait Time is 3-5 Days

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

    $15.00
    SKU: OPT-19888

    Wait Time is 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
  3. Shelyak - Short EP holder

    $65.47
    SKU: SHE-BA0018

    Wait Time is 3-5 Days

    Short eyepiece holder for Lhires III
  4. Starlight Instruments - Riser, 2.0 " Diameter, adds 3.75 " to Height

    $85.00
    SKU: R20-3.75

    Wait Time is 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 0.65 " to Height

    $60.00
    SKU: R20-0.65

    In stock

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

    $65.00
    SKU: R20-1.0

    Wait Time is 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. Starlight Instruments - Riser, 2.0 " Diameter, adds 1.4 " to Height

    $65.00
    SKU: R20-1.4

    Wait Time is 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.

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

    $75.00
    SKU: R20-2.75

    Wait Time is 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.

  9. Takahashi - 2" Extension Tube

    $163.00
    SKU: TAK-TKP31112

    In stock

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

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

    $40.00
    SKU: OPT-19886

    Wait Time is 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
  11. Optec - AP2.7 x 24tpi Extension Tube, 1" length.

    $30.00
    SKU: OPT-19884

    Wait Time is 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
  12. Optec - AP2.7 x 24tpi Extension Tube, 3/4" length.

    $30.00
    SKU: OPT-19883

    Wait Time is 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
  13. Lumicon - 1.25 Drop-in Extension Tube 3 Push Back.

    $14.95
    SKU: LMC-LA1020

    Wait Time is 3-5 Days

    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"
  14. Lumicon - 2in Thread-in Extension Tube with 2in Push-Back

    $19.95
    SKU: LMC-LA1025

    Wait Time is 3-5 Days

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

    $24.95
    SKU: LMC-LA1030

    Wait Time is 3-5 Days

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

    $24.95
    SKU: LMC-LA1035

    Wait Time is 3-5 Days

    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
  17. Optec - 2-" to 3"x 24 tpi male threaded mount.

    $95.00
    SKU: OPT-17666

    Wait Time is 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
  18. Optec - AP2.7 x 24tpi Extension Tube Set, 4-piece.

    $115.00
    SKU: OPT-19880

    Wait Time is 3-5 Days

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

    $150.00
    SKU: OPT-19881

    Wait Time is 3-5 Days

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

    $30.00
    SKU: OPT-19882

    Wait Time is 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
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