Dark Clear Skies M68M to M54F Fine Back Focus Spacer – 1.4mm SV113 94 in (5-10 cm) for

94 in (5-10 cm) for the top of the battery

it delivers rock-solid performance while preserving precious back-focus

self-contained imaging solution designed for electronically assisted astronomy (EAA)

all from the palm of your hand

to orchestration of state of the art observatory

Dark Clear Skies M68M to M54F Fine Back Focus Spacer – 1.4mm SV113 94 in (5-10 cm) forThe 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