Apertura Bright Focus Mask for 6" to 9.25" Telescopes

The Apertura Bright Focus Mask for 6" to 9.25" telescopes is engineered to deliver sharper, brighter, and more precise focusing for your astro-imaging and visual observing sessions. Unlike generic masks that are simply scaled for size, this focus mask is specially designed based on real telescope data to ensure the bar patterns and cutouts are perfectly tuned for scopes with apertures from 6" to 9.25".

Crafted from 2mm thick CNC laser-cut 6061 aluminum and finished in durable black oxide, this premium focus mask offers rigidity, longevity, and high performance. The innovative diffraction pattern design gives you a clear focusing aid even under challenging lighting conditions, making it easier to achieve pinpoint stars. Whether you're observing visually or fine-tuning focus for deep sky imaging, this thoughtfully engineered mask is a must-have tool for astrophotographers seeking optimal results.

• Compatibility: 6" to 9.25" telescopes
• Outside Diameter Fit: 7.37" to 11.24"
• Material: CNC laser-cut 6061 aluminum
• Finish: Black oxide coating
• Thickness: 2 mm
• Mounting Hardware: Nylon thumbscrews and posts with rubber washers
• Optimized Design: Focus mask bars and slots tailored to specific telescope aperture range
• Examples of Compatible Models: Celestron NexStar 8SE, Celestron 9.25" EdgeHD NexStar Evolution
• SKU Number: APT-FOCUS-L
• Warranty: Apertura – 2 Year with 3-Year Sharp Accident Replacement

• Apertura Large Focus Mask
• 6 Rubber Washers
• 3 Mounting Posts
• 3 Nylon Thumb Screws