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ZWO M42-M42 extender (21mm length)
The ZWO M42-M42 Extender (21mm) adds 21mm to your backfocus train, featuring M42x0.75 male and female threads for seamless integration with astrophotography setups. Perfect for precise optical adjustments.
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The ZWO M42-M42 Extender (21mm) is a spacer ring that adds 21mm to your backfocus train. The ZWO M42-M42 Extender has a male M42 thread and a female M42 thread.
Thread: M42x0.75
Backfocus Distance: 21mm
About ZWO Optical: Astrophotography has never been easier
Established in 2011, ZWO Optical is a fast-growing global astroimaging camera powerhouse based in Suzhou China.
They focus on building and innovating groundbreaking CMOS cameras such as the iconic ZWO ASI120MM Monochrome CMOS camera (the first-ever planetary CMOS camera to beat a CCD in the early 2010s).
ZWO continues to pioneer new astrophotography technology with revolutionary features to capture exceptional quality of images of space that will last you a lifetime.
Today, ZWO cameras are recognised by every passionate astrophotographer and are available in over 25 countries internationally.
Product Code: T2-EXT-21
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