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Canon EF-mount telescope adapter
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This adapter allows the user to use a normal eyepiece with a Canon DSLR camera.
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Model information
- Source
- Printables
- Category
- Physics & Astronomy
- License
- Creative Commons — Attribution
This adapter allows the user to mount a standard 1.25-inch eyepiece to a Canon DSLR camera and a telescope. The mount is sturdy and has an adjustable tightness. I tested it at an outdoor temperature of -5°C without any impact on performance or functionality.
To secure the adapter, two M4 T-nuts must be inserted, and a 40mm M4 bolt with a conical head can be used along with the included tighteners. For any modifications, I will include a blueprint.

Different screws and nuts should work with slight modifications aswell.