M117 to M117 Extension Tube 25mm | Dark Clear Skies Observatory Equipment Durable Protective Carrying Case- A

Durable Protective Carrying Case- A protective case lined with soft foam is included to store the accessory pieces for storage and travel

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Lone Worker

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Observatory Actions with CTRL-IN and CTRL-OUT ports

M117 to M117 Extension Tube 25mm | Dark Clear Skies Observatory Equipment Durable Protective Carrying Case- AM117 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