SVBONY 99% Dielectric Telescope Diagonal 2″ 90°

Description

Product Overview

The SVBONY 99% Dielectric Telescope Diagonal delivers exceptional optical performance for refractor telescopes. Constructed with a 1/10 wave flat optical glass surface and a high‑reflectivity dielectric coating, it achieves 99% light transmission, far surpassing standard aluminum mirrors. The diagonal fits standard 2″ (50.8 mm) focus tubes and includes a 1.25″ adapter, allowing versatile eyepiece use. Its solid aluminum housing provides robust protection, while the threaded rim accepts standard 2″ filters for added flexibility.

Usage

Designed for both amateur and advanced astronomers, this diagonal excels in backyard stargazing, field observations, and astrophotography sessions. The 90° view angle offers a comfortable, ergonomic viewing position, reducing neck strain during extended sessions. Compatible with a wide range of eyepieces, it is ideal for planetary, lunar, and deep‑sky observations.

Why Choose Us

SVBONY combines precision engineering with premium materials to ensure lasting performance. The dielectric coating resists oxidation, maintaining its 99% reflectivity over years, unlike traditional aluminum mirrors that degrade. Each unit undergoes strict quality control, guaranteeing flatness of the optical surface and secure fit for both 2″ and 1.25″ eyepieces.

Key Features

• 99% reflectivity dielectric coating for maximum light transmission
• Flat 1/10 wave optical glass surface eliminates image distortion
• 90° viewing angle provides comfortable, ergonomic observation
• Fits standard 2″ focus tubes with included 1.25″ adapter
• Solid aluminum housing with threaded filter thread for 2″ accessories

FAQ

Can this diagonal be used with both 2″ and 1.25″ eyepieces?

Yes, the diagonal includes a built‑in 1.25″ adapter and a 2″ holder, allowing seamless use of both sizes.

How does the dielectric coating compare to standard aluminum mirrors?

The dielectric coating provides 99% reflectivity and does not oxidize over time, whereas aluminum mirrors typically start around 92% and degrade with age.

Is the diagonal suitable for astrophotography?

Its high reflectivity and flat optical surface make it well‑suited for imaging, delivering sharp, high‑contrast frames when paired with a stable mount.

What is the weight of the diagonal?

The unit weighs approximately 1.17 pounds, offering a sturdy yet manageable addition to most refractor setups.

Does the product include a filter thread?

Yes, the outer rim is threaded to accept standard 2″ filters, expanding its versatility for various observing needs.