When venturing into the realm of astrophotography through a telescope or spotting scope, one of your initial necessities will be a T-Ring. If you are in possession of a Canon EOS mirrorless camera body, the ideal choice is the Celestron EOS M-Mount T-Ring.

Using this T-Ring is a straightforward process. To begin, attach the M-Mount T-Ring to your Canon mirrorless camera. Much like the process of changing a camera lens, align the T-Ring with your camera's lens mount, push it in, and rotate until you hear a distinctive click. The T-Ring features a robust bayonet flange that securely locks in place. Once you have affixed the T-Ring to your camera, you are all set to connect it to your telescope. On the telescope side of the T-Ring, there are threads that can accommodate a range of camera adapters, including the Celestron T-Adapter. The specific adapter you select will depend on the type of photography you intend to pursue.

As for its construction, the Canon M-Mount 42mm T-Ring is precision-machined from black anodized aluminum. Its internal surfaces are treated to be blackened and anti-reflective, ensuring optimal contrast. The T-Ring also features a ribbed surface for a secure grip when attaching or detaching. Moreover, the Canon M-Mount 42mm T-Ring is compatible with M42 x 0.75 (T-Thread) camera adapters.

Terrestrial and Celestial Imaging

Pair your T-Ring with a Celestron T-Adapter to turn your telescope or spotting scope into a large telephoto lens. Depending on the optics you own, pair your M-Mount T-Ring with these adapters:

Optics	T-Adapter to pair with the M-Mount
Spotting Scope*	Universal T-Adapter - 1.25"
Schmidt-Cassegrain telescope	T-Adapter for Schmidt-Cassegrain Telescopes
Refractor telescope	Universal T-Adapter - 1.25"
Newtonian Reflector telescope	Universal Barlow and T-Adapter - 1.25"
NexStar 4SE	T-Adapter, NexStar 4SE
EdgeHD (8”)	T-Adapter, (EdgeHD 8)
EdgeHD (9.25”, 11”, 14”)	T-Adapter, (EdgeHD 925, 11 & 14)

Specifications

GENERAL
Thread:	M42-0.75
Camera mount:	Canon M-mount for mirrorless cameras
Construction:	Aluminum black anodized
Outside Diameter:	65mm (2.56")
Thickness from flange:	10mm (0.39")
Weight:	1.76 oz (50 g)
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Celestron Canon M Mount T-Ring

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