M65M to M54M Adapter – 1.4mm Back Focus

This precision-machined M65M to M54M adapter is designed for astrophotography imaging trains where exact back focus spacing is critical. With an ultra-thin mechanical thickness of just 1.4mm, it allows fine adjustment without exceeding reducer or flattener spacing requirements.

Ideal for converting between M65 and M54 threaded components, this adapter is commonly used in advanced imaging setups involving field flatteners, focal reducers, filter wheels, and cameras.

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

Key Features

• M65 male to M54 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: M65 × 1 (Male)
• Thread B: M54 × 0.75 (Male)
• Optical / Mechanical Length: 1.4 mm
• Material: Aluminium alloy
• Finish: Black anodised

What’s Included

• 1 × M65M to M54M Adapter (1.4mm back focus)