Amazon.com : Alstar 2" Adjustable Extention Tube Camera Adapter - Adjustable Length Adapter Lets You Attach A T-Ring Equipped DSLR Or SLR Camera Directly to Your Telescope : Electronics
Telescope Microscope T Ring Adapter T2 Mount Lens Adaptor for Canon/Nikon/Panasonic Olympus/Fujifilm/Samsung Mirrorless Camera|AC/DC Adapters| - AliExpress
Celestron SLR (35mm OR Digital) Camera Adapter 93625 B&H Photo
TelescopeAdapters
Smartphone Telescope Adapters: Are They Worth Your Time And Money?
Telescope Adapters - Accessories | PrimaluceLab USA
EBTOOLS Telescope Adapter, Telescope Adapter , 1.25in For Telescope Cameras Camera - Walmart.com