M68M to M63M Adapter – 1.4mm Back Focus

This precision-machined M68M to M63M adapter is designed for astrophotography imaging trains where precise back focus spacing is essential. With an ultra-thin mechanical thickness of just 1.4mm, it allows accurate spacing without compromising reducer or flattener requirements.

Ideal for converting between M68 and M63 threaded components, this adapter is commonly used in advanced imaging setups involving field flatteners, focal reducers, filter wheels, off-axis guiders, and cameras.

CNC-machined to tight tolerances and finished in matte black to minimise internal reflections, it provides a clean, secure, and professional connection within complex imaging trains.

Key Features

• M68 male to M63 male thread conversion
• Ultra-thin 1.4mm back focus for precise spacing control
• CNC-machined for accuracy and durability
• Matte black finish to reduce internal reflections
• Designed for advanced astrophotography imaging trains

Specifications

• Thread A: M68 × 1 (Male)
• Thread B: M63 × 1 (Male)
• Optical / Mechanical Length: 1.4 mm
• Material: Aluminium alloy
• Finish: Black anodised

What’s Included

• 1 × M68M to M63M Adapter (1.4mm back focus)