Telescope Diagonal Mirror Serounder 90° Coated

Description

Product Overview

The Serounder 90° diagonal mirror is a precision‑engineered accessory designed specifically for refracting telescopes. Constructed with fully coated optical glass, the mirror maintains high transmission and resists dust and moisture thanks to an integrated dust cover. Weighing only 3.52 ounces, it offers a lightweight yet durable solution that holds the image upright (inverted left‑to‑right) without compromising optical quality. Compatible with 1.25 inch eyepieces and 0.965 inch focusers, this diagonal is ideal for both astronomical and terrestrial observation.

Usage

This diagonal mirror excels in a variety of observing scenarios. Amateur astronomers can attach it to their backyard refractor to view planets, star clusters, and deep‑sky objects with a stable, correctly oriented image. Wildlife enthusiasts and hikers can also use the same setup for terrestrial viewing, such as scanning distant landscapes or birdwatching. Installation is straightforward: insert the 0.965 inch end into the telescope focuser, screw the 1.25 inch side onto the eyepiece, and you’re ready to explore the skies or the ground.

Why Choose Us

Serounder combines rigorous quality control with affordable pricing. Each mirror undergoes optical testing to ensure flatness and coating uniformity, guaranteeing consistent performance across the product line. The fully coated lenses reduce glare and enhance contrast, while the dust cover protects the optics during transport and storage. Our commitment to customer satisfaction is reflected in responsive support and a clear warranty policy.

Key Features

• 90° diagonal design keeps images upright for comfortable viewing
• Fully coated optical glass delivers high transmission and reduced glare
• Lightweight 3.52 oz construction for easy handling and transport
• Fits 1.25″ eyepieces and 0.965″ focusers – versatile across many refractors
• Dust‑cover included to protect lenses from contaminants

FAQ

Can this diagonal be used with reflecting telescopes?

No. The design is optimized for refracting telescopes; using it with a reflector may cause image distortion.

Is the mirror suitable for daytime terrestrial observation?

Yes. The fully coated lenses provide clear, sharp images for both night‑time celestial and daytime ground viewing.

How do I install the diagonal?

Insert the 0.965 inch end into your telescope’s focuser, then screw the 1.25 inch side onto your chosen eyepiece. No tools are required.

What is the warranty period?

Serounder offers a one‑year limited warranty covering manufacturing defects.

Will the dust cover affect image quality?

The dust cover is removable and does not sit in the optical path, so it does not impact image clarity when the mirror is in use.