Celestron Basic Smartphone Adapter 1.25 inch 45 mm eyepiece fit

Smartphone-to-telescope adapter for 1.25 inch

The Celestron Basic Smartphone Adapter clamps a phone to any telescope eyepiece with an outside diameter of 45 mm or smaller. It turns a standard smartphone into an imaging tool for celestial and terrestrial photography. The adapter fits 1.25 inch focusers and uses the eyepiece magnification to extend the phone camera's reach. Photographers wanting a direct prime-focus connection will need a different accessory.

Knob-locked clamp holds the phone steady during

Tightening knobs secure the smartphone over the eyepiece so the alignment does not drift while tracking the Moon or planets. The mechanical lock keeps the camera centred through the vibrations of slewing or wind. Users who prefer a quick-release magnetic mount or a spring-loaded cradle will find this design slower to adjust between targets.

Lightweight frame with fixed 45 mm eyepiece limit

A compact frame adds minimal mass to the telescope balance and slips into an accessory case without bulk. The clamp only accepts eyepieces up to 45 mm outside diameter, so wide-field oculars with larger barrels cannot be used. Owners of bulky folio-style phone cases may need to remove the case before the phone fits in the jaws.