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Black anodized aluminium spacer tube, .375 inch length for 2.4 inch focusers

Tele Vue

Tele Vue .375" (9.5mm) Accessory Tube Spacer for 2.4" Focusers

SKU CH-BX2B-49Y8F

Provides precise 9.5mm spacing for 2.4 inch focusers using black anodized aluminum with anti-reflection threads

  • Provides precise back-focus spacing for optimal imaging
  • 5 mm length matches specific camera-to-focuser requirements
  • Threaded coupling ensures secure, aligned connection to 2.4" focusers
  • Black anodized aluminum with anti-reflection threads maximizes contrast

Tele Vue .375" Spacer for 2.4" Focusers

This aluminium spacer adds 9.5 millimetres of back-focus distance for 2.4-inch focusers. Threaded couplings secure field lenses at the correct spacing for imaging sensors. Black anodised surfaces with anti-reflection threads preserve contrast during astrophotography sessions. It suits astronomers fine-tuning optical trains for specific camera requirements.

Practical limits of threaded spacer stacking

Each spacer provides a fixed 9.5 millimetre increment, so precise back-focus targets may require combining multiple units. Vignetting can occur if the total stack exceeds the focuser's clear aperture or draw-tube travel. Users must calculate the exact spacing needed from camera specifications before assembly. The 2.4-inch thread standard limits compatibility to matching focusers and accessories only.

How it compares

Measured against everything we stock in Binoculars, Scopes & Sights, at today’s prices. Recalculated every night.

Price $17.99
Cheaper than about 87% of the 1,401 comparable items (median $93.99).

Specifications

No published specifications for this item yet.

Questions about this item

Should I choose the .375" or 9.5mm length for my 2.4" focuser?

Both figures describe the same spacer length; .375 inches equals 9.5 millimetres, so either value refers to the identical tube spacer for 2.4" focusers.

What does the .375" spacer do once it is installed in the focuser?

The threaded aluminium spacer sets the exact distance between the field lens and the camera sensor, and its anti-reflection threads help maintain contrast.

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