TS-Optics T2 Adapter for C-Mount Lenses (C-Mount Female to T2 M42x0.75 Male) This little adapter is basically the “translator” your gear drawer has been missing. The TS-Optics C-mount to T2 adapter lets you mount C-mount lenses onto cameras and accessories that use the standard T2 (M42x0.75) thread—perfect for pairing C-mount glass with CCD/CMOS astro cameras that have a T2 interface (including many ASI-style cameras). Converts C-mount lenses to the widely-used T2 (M42x0.75) ecosystem Ideal for connecting C-mount lenses to CCD/CMOS cameras with T2 threads Short 6.5mm thickness keeps the setup compact—great for wide “overview” imaging setups Fits all C-mount lenses/adapters that have a male C-mount thread Great option for experimenting with C-mount lenses for wide-field and survey-style shots Backfocus reminder (important): C-mount flange distance: 17.5mm CS-mount flange distance: 12.5mm You may need additional spacers/adapters to hit the correct sensor distance for your specific lens Specifications Adapter type: C-mount (female) to T2 (male) Female thread: C-mount Male thread: T2 / M42x0.75 Thickness: 6.5mm Compatibility: C-mount lenses/adapters with male C-mount threads; cameras/accessories with female T2 threads Backfocus reference: C-mount 17.5mm, CS-mount 12.5mm (may require additional adapters)