Dark Clear Skies M68M to M54F Fine Back Focus Spacer – 1.4mm SV113 Durability: Astronomik filters are highly

Durability: Astronomik filters are highly scratch-resistant

Sturdy Construction: The Vixen & Arca-Swiss dovetail plate ensures secure mounting to your equatorial mount

So the signal stability can be well ensured

allowing you to configure your observing or imaging setup to your preference

Adjustable focus mechanism

Dark Clear Skies M68M to M54F Fine Back Focus Spacer – 1.4mm SV113 Durability: Astronomik filters are highlyThe Dark Clear Skies M68M to M54F Fine Back Focus Spacer (1. 4 mm) is a precision machined spacer designed for fine adjustment of back focus distance in astrophotography imaging trains. Purpose & Use Many modern reducers and field flatteners require extremely precise back focus spacing to deliver optimal star shapes and edge correction, particularly when used with larger sensors. Even small spacing errors of around 1 mm can noticeably affect image