William Optics M48 Canon EOS T-Ring - Black - TM-CN-EOS-M48 Evolution Telescopes The Contrast Booster also incorporates

The Contrast Booster also incorporates additional RGB filtration for further enhancing color contrasts

Attaches easily to the factory-prepared tube of your telescope

If you need to extend it

you won’t be able to see some of the most spectacular objects in the night sky entirely in the field of view of a common eyepiece unless you move your telescope around

the FRA shows well-conceived design and the rings provide a practical three-sided mounting platform

William Optics M48 Canon EOS T-Ring - Black - TM-CN-EOS-M48 Evolution Telescopes The Contrast Booster also incorporatesWilliam Optics 48 mm T Ring for Canon EOS Cameras Use this aluminum black anodized T ring to attach your Canon EOS camera body to an imaging accessory, etc. with M48 threads.