Dark Clear Skies M54M to M42M Back Focus Spacer – 1.5mm lunar observation ensuring easy connectivity and compatibility

ensuring easy connectivity and compatibility with your astrophotography setup

1 x Simple Tripod

The ear-hook receivers are designed to be small and portable

Excellent central wavelength stability with minimal temperature-induced shift

offering outstanding value for most users

Dark Clear Skies M54M to M42M Back Focus Spacer – 1.5mm lunar observation ensuring easy connectivity and compatibilityThe Dark Clear Skies M54M to M42M Fine Back Focus Spacer (1. 5 mm) is a precision machined spacer designed for fine adjustment of back focus distance in astrophotography imaging trains. Purpose & Use Many telescope reducers and field flatteners require a precise back focus distance to deliver optimal star shapes and edge correction. Small spacing errors of even 12 mm can noticeably affect image quality, particularly with fast optical systems and