TeleVue Imaging System 12.7 mm - Extension Tube
This 12.7 mm extension piece is developed for the TeleVue Imaging System and ensures the correct distance between the field lens and the CCD chip from your camera. Correct back focus is essential for field correctors and flatteners to perform optimally.
With this spacer ring, you add exactly 12.7 mm ready for your optical configuration within TeleVue 2.4" system.

Exact distance for optimal image quality
In astrophotography, a deviation of a few millimeters can already be visible in the form of edge unsharpness or distortion. This extension helps you accurately fine-tune the total distance in your imaging train to the prescribed specifications.
The ring is black anodized to minimize internal reflections and prevent contrast loss. It is a purely mechanical component with no optical elements.

Compatible with 2.4″ focusers
This extension is suitable for the TeleVue 2.4" system and connect to compatible 2.4″ focusers in system adapters.
What we recommend
- Check the required back focus of your corrector or flattener
- Combine multiple spacer rings for precise fine adjustment
- Use only compatible 2.4" TeleVue Components
What you can do with it
- The distance between the field lens and CCD chip Set exact
- Optimize range correction
- Configure your imaging setup professionally
Specifications
Capacity
- Telescope connection: 2.4"
- Eyepiece connection 0.5 inch
General
- Type: Adapter
- Design: Extension







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