Availability: Item has been discontinued and is no longer available.
The Adapter M100 enables attachment of the 3" RT Steeltrack Focuser into telescope backplates with an opening of 100mm
- 4" dovetail on one side for attachment of 3" RT Steeltrack Focuser.
- M100 external thread on other side.
- M100 counternut for locking onto telescope backplates.
- Fully baffled and blackened internal surface kills off-axis stray light.