T2, M48 or M49.8 rings for DSLR

T2 (or M48) rings are important accessories that you need to record astrophotos with DSLR cameras. In fact, this accessory converts the brand bayonet in an universal T2 thread (42x0.75 female - or M48x0.75) allowing you to connect a variety of accessories such as photographic adapters, off-axis guiders or focal reducers.

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