Description

This M42 back focal adjustment ring is made for astronomical photography users to accurately calibrate the rear focal length of telescope equipment. Flat circular optical spacers create tight fixed connection among cameras, telescopes and matching optical fittings. Solid metal construction withstands temperature shifts and pairs with multiple optical accessories to build steady imaging equipment combinations.

Features

-Color: Grey

-Material: Stainless steel

-Size:5.20X5.20X0.01cm/2.05X2.05X0.00in

-Accurate Matching Structure: The M42 spacer ring fits closely between cameras, optical lenses and telescope attachments to stabilize optical paths and lift overall shooting quality for celestial photography

-Temperature Stable Structure: Stainless steel raw material retains its shape and consistent thickness under different ambient temperatures to deliver reliable optical spacing during field shooting

-Wide Equipment Adaptability: The standard M42 interface matches most mainstream telescope devices, camera systems and optical components built with M42 mounting standards

-Focal Calibration Accessory: This thin spacer piece helps users adjust flange distance to align internal optical paths, covering various rear focal adjustment demands for different shooting configurations

-Simple Mounting Steps: Standard round threaded edge supports convenient attachment and position adjustment, suitable for new hobbyists and veteran optical equipment operators alike

5 x Spacer Ring

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