Description
Product Overview
The Celestron Luminos series redefines what an eyepiece can do for both casual stargazers and seasoned observers. Crafted from robust anodized aluminum, each barrel is precision‑threaded to accept a wide range of filters, expanding your observational capabilities. Available in three focal lengths—19 mm, 23 mm, and 31 mm—the 2‑inch design provides a generous 82° apparent field of view, delivering crisp, high‑contrast images across the night sky. The eyepiece measures 3.5 × 3.5 × 5.25 inches and weighs 2.5 lb, striking a balance between solid construction and manageable heft. A rubberized grip ensures secure handling, even when wearing gloves in sub‑zero temperatures, while the retractable eyecup pops up for comfort and folds away for unobstructed viewing.
Usage
Designed for a variety of observing scenarios, the Luminos eyepiece excels in backyard astronomy, field trips, and educational settings. Its wide field makes it ideal for scanning star clusters, nebulae, and large planetary features, while the sturdy barrel accommodates accessories such as neutral density and planetary filters for enhanced contrast. Whether you are setting up a portable Dobsonian on a chilly hilltop or mounting a refractor on a permanent pier, the ergonomic grip and retractable eyecup adapt to cold‑weather gloves and prolonged sessions. 
Why Choose Us
Celestron’s reputation for optical excellence is backed by decades of research and development. The Luminos line benefits from precision CNC machining, ensuring barrel concentricity and consistent performance across all units. Each eyepiece undergoes rigorous quality testing, from coating adhesion to mechanical durability, guaranteeing that the product you receive meets professional standards. The combination of anodized aluminum construction, a secure rubber grip, and a thoughtfully engineered retractable eyecup sets the Luminos apart from generic plastic alternatives, offering longevity and reliability for serious observers.
Key Features
- 82° apparent field of view for expansive sky coverage
- Retractable eyecup provides comfort and reduces glare
- Durable anodized aluminum barrel threaded for standard 2″ filters
- Rubberized grip ensures secure handling in cold or gloved conditions
- Three focal length options (19 mm, 23 mm, 31 mm) to suit diverse observing needs
FAQ
What telescopes are compatible with the Luminos eyepiece?
The 2‑inch barrel fits any telescope that accepts standard 2″ accessories, including Dobsonians, Newtonians, refractors, and SCTs with appropriate adapters.
Can I use filters with this eyepiece?
Yes. The threaded barrel is designed for standard 2″ filter threads, allowing you to attach neutral density, planetary, or light‑pollution reduction filters.
Is the eyecup adjustable for different eye relief needs?
The retractable eyecup slides smoothly and can be positioned to accommodate varying eye relief distances, providing a comfortable viewing experience for both short‑ and long‑eye‑relief users.
How does the rubber grip perform in freezing temperatures?
The grip is made from a cold‑resistant polymer that remains pliable and non‑slippery even at sub‑zero temperatures, ensuring you maintain control without sacrificing comfort.
What is the warranty on the Luminos eyepiece?
Celestron offers a limited one‑year warranty covering manufacturing defects, giving you peace of mind for your investment.
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