Astrozap Focusing Cap w/ Built-In Bahtinov Focusing Mask for 9.25" SCTs and Similar Scopes

AstroZap Focusing Cap with Built-In Bahtinov Mask – 9.25" SCT and Similar OTAs

Focus like a pro without adding complexity to your setup. The AstroZap Focusing Cap with Built-In Bahtinov Mask is custom-designed for 9.25" Schmidt-Cassegrain telescopes, giving you an ultra-precise focusing tool and a snug-fitting dust cap in one sleek, easy-to-use accessory.

This all-in-one design features a sliding shutter that reveals a precision-cut Bahtinov mask built right into the cap. No more juggling separate masks or worrying about losing a loose accessory in the dark. Just point your scope at a bright star, open the shutter, and watch as the star’s light forms a crisp diffraction spike pattern. Adjust focus until the central spike is centered between the outer ones—then close the shutter and get observing or imaging.

Whether you're using a Celestron 9.25" SCT or a similarly sized OTA, this cap offers a reliable, repeatable way to ensure critical focus—without slowing you down or adding unnecessary bulk.

Features:

• Made for 9.25" Schmidt-Cassegrain telescopes and similar-sized OTAs

• Combines a protective front cap with a built-in Bahtinov focusing mask

• Sliding shutter reveals or conceals the focusing mask on demand

• Fast, accurate focusing via diffraction spike alignment

• Keeps your corrector plate protected when not in use

• Ideal for astrophotography, planetary imaging, and high-res visual work

Observing Tip:

The 9.25" SCT is a favorite for planetary and deep-sky observing thanks to its balance of aperture and portability—but that balance comes with a long focal length and tight focus tolerance. A built-in Bahtinov mask lets you achieve precise focus quickly, even in less-than-perfect seeing, so you can take full advantage of what your scope can do.