M117 to M117 Extension Tube 25mm | Dark Clear Skies Observatory Equipment This feature provides flexibility and

This feature provides flexibility and control over the interpreting process

To select the right Glasspathcorrector

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This advanced design virtually eliminates chromatic aberration

Lone Worker

M117 to M117 Extension Tube 25mm | Dark Clear Skies Observatory Equipment This feature provides flexibility andM117 to M117 Extension Tube 25mm The Dark Clear Skies M117 to M117 25mm Extension Tube is a precision machined spacer designed for fine back focus adjustment in large format astrophotography imaging systems. Featuring M1171 male threads on both ends, this extension tube is ideal for making smaller spacing corrections when pairing large reducers, flatteners, filter systems, and cameras. The 25mm optical length allows accurate tuning of optical spacing