Adapters

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

    $69.00
    SKU: FOC-SPCR

    Ships in 3-5 Days

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

    $55.00
    SKU: JMI-ADPT1EXT

    Ships in 3-5 Days

    Extends the range of low-profile focusers. 1.25″ diameter x 1
  3. JMI - Extension Tube 2 " dia. x 1.5 " ht

    $59.00
    SKU: JMI-ADPT2EXT

    Ships in 3-5 Days

    Extends the range of low-profile focusers. 2″ diameter x 1
  4. JMI - Extension Tube 2 " dia. x 2.5 " ht

    $69.00
    SKU: JMI-ADPT2EXTL

    Ships in 3-5 Days

    Extends the range of low-profile focusers. 2″ diameter x 2
  5. JMI - 2 " Enhanced Extension Tube (2.13 ")

    $85.00
    SKU: JMI-ADPT2X2.1E

    Ships in 3-5 Days

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

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

    $89.00
    SKU: JMI-ADPT2X2.6E

    Ships in 3-5 Days

    Enhanced extension tubes include a compression ring and 48mm filter threads. See the Adapter Comparison Chart.2" diameter x 2
  7. Lumicon - 1.25" Thread-in Extension Tube with 1" Eyepiece Push-back

    $9.95
    SKU: LA1010

    Ships in 3-5 Days

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

    $14.95
    SKU: LA1015

    Ships in 3-5 Days

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

    $14.95
    SKU: LA1020

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

    $19.95
    SKU: LA1025

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

    $24.95
    SKU: LA1030

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

    $24.95
    SKU: LA1035

    Ships in 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
  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, 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
  17. 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
  18. 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
  19. 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
  20. Shelyak - Short EP holder

    $65.47
    SKU: BA0018

    Out of stock

    Short eyepiece holder for Lhires III
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