The 100MM CAD Pack.

The 100MM CAD Pack contains all digital resources for the MountOne 100MM Astrograph.

Contained in The 100MM CAD Pack are

• STEP Files, including the Main Assembly.
• STL Files, full sets with all calibration sizes.
• F3Z Fusion Files, the fully-editable Master Assembly.
• PDF Files, Bill-Of-Materials with Fixings & Printed Parts.
• 3MF Files, for Bambu Lab P2S & A1 Mini.

A direct-download link will be emailed to you after check-out.

The 100MM CAD Pack is included with all purchases of The 100MM Hardware Kit.

The MountOne 100MM Astrograph.

Front and centre, top, is a 100mm f/3.5 apochromatic C-Mount lens. The lens has manual iris and focus control rings on the exterior of the lens.

The 100MM Astrograph enables automatic focus control of the lens by way of a stepper motor, belt and printed focus ring. Taking advantage of OnStep's INDI Focus driver, we can remotely control and adjust the precise position of the 100mm's focal plane.

Twin 6811-2RS bearings (the same as used in the MountOne), support any tension on the belts that adjust the focus. This keeps any stresses off both the lens and the Raspberry Pi HQ Camera it attaches to.

The 100MM astrograph integrates the lens, focus system, HQ Camera, a Raspberry Pi 5 & accessories, power converter, and an optional GPS into a single unit.

The 100MM Assembly Documentation.

MountOne © 2026 by Hexaxes Ltd is licensed under CC BY-NC-SA 4.0