Astrozap Focusing Cap with Built-In Bahtinov Focusing Mask for 8" Schmidt-Cassegrains and Similar Scopes

AstroZap Focusing Cap with Built-In Bahtinov Mask – 8" SCT and Similar OTAs

Perfect focus is the foundation of any great observing or imaging session, and with the AstroZap Focusing Cap with Built-In Bahtinov Mask, it’s easier than ever to nail it—every time. Designed specifically for 8" Schmidt-Cassegrain telescopes, this clever combination of protective cap and focusing mask ensures sharp results without adding extra accessories to manage.

The built-in Bahtinov mask is revealed using a smooth sliding shutter, allowing you to focus quickly and accurately using the distinctive three-spike diffraction pattern on a bright star. As you adjust your focuser, the center spike will move—once it's centered between the outer two, you’ve reached precise focus. No guessing. No wasted exposures. Just crisp results.

When focus is locked in, close the shutter and the cap returns to its job as a full-time dust and dew shield for your corrector plate. It’s a streamlined, dual-purpose solution that belongs in every 8" SCT owner’s kit—whether you’re imaging galaxies, chasing Jupiter’s bands, or doing critical collimation.

Features:

• Designed to fit 8" Schmidt-Cassegrain telescopes (e.g., Celestron C8, Meade 8" SCT)

• Combines a protective dust cap with an integrated Bahtinov focusing mask

• Sliding shutter mechanism makes switching between modes fast and easy

• Provides fast, repeatable focusing using the Bahtinov diffraction pattern

• Eliminates the need for separate masks or added bulk

• Durable construction made for regular use in the field

Observing Tip:

An 8" SCT delivers excellent resolution and focal length for both planetary and deep-sky work—but that also means your focus tolerance is slim. The built-in Bahtinov mask in this cap makes precise focus a breeze and saves time when switching between imaging setups or checking collimation on the fly.