5-star Rated Astro-tech 9mm To 27mm 1.25" Zoom Eyepiece - Priority Shipping [ZYLpNB6K]

Astro-Tech Zoom Eyepiece: Versatile Power

The Astro-Tech 9mm to 27mm Zoom Eyepiece is a must-have accessory for astronomers of all levels. This compact and versatile eyepiece offers a focal length range from 9mm to 27mm, making it perfect for observing celestial objects with ease. With its impressive 1.25" barrel size, it fits neatly into your current eyepiece assortment, providing a seamless viewing experience. The black anodized finish not only adds a sleek look but also ensures durability.

• Perfect for a wide range of telescopes and eyepiece mounts
• Convenient 1.25" barrel size for compatibility

Technical Specifications and Performance

This Astro-Tech zoom eyepiece boasts a variable focal length range of 9mm to 27mm, offering a wide field of view from 40° to 60°. The high-quality lens elements are fully broadband multicoated with high transmission antireflection optical coatings, ensuring maximum light transmission and contrast. The 7 lens/4 group design, coupled with high refraction/low dispersion glass elements, guarantees excellent color fidelity.

• Variable focal length range from 9mm to 27mm
• Apparent field of view ranging from 40° to 60°

Practical Uses and Target Audience

Whether you're a beginner or an experienced astronomer, this Astro-Tech zoom eyepiece is designed to enhance your observing experience. Its 15mm usable eye relief is ideal for those who wear glasses, minimizing vignetting and providing clear, unvignetted viewing. The twist-up rubber-rimmed eyecup blocks out ambient light and positions your eye at the correct eyepoint. The eyepiece is also lightweight and portable, making it an excellent choice for casual observing sessions or when traveling.

• Excellent for astigmatism patients with 15mm eye relief
• Ideal for casual and travel observing sessions