M68M to M48M Adapter – 1.5mm Back Focus

This precision-machined M68M to M48M adapter is designed for astrophotography imaging trains where exact back focus spacing is required. With an ultra-thin mechanical thickness of just 1.5mm, it allows fine spacing adjustment without exceeding reducer or flattener back focus limits.

Ideal for adapting M48-threaded cameras, filter wheels, and accessories to M68-based imaging systems, this adapter is commonly used in advanced astrophotography setups involving reducers, flatteners, off-axis guiders, and spacers.

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

Key Features

• M68 male to M48 male thread conversion
• Ultra-thin 1.5mm back focus for precise spacing control
• CNC-machined for accuracy and durability
• Matte black finish to reduce internal reflections
• Designed for astrophotography imaging trains

Specifications

• Thread A: M68 × 1 (Male)
• Thread B: M48 × 0.75 (Male)
• Optical / Mechanical Length: 1.5 mm
• Material: Aluminium alloy
• Finish: Black anodised

What’s Included

• 1 × M68M to M48M Adapter (1.5mm back focus)