The secondary mirror in this set is listed as a spherical mirror. What is the focal length of the secondary?

The secondary is flat, not spherical. These are good mirrors, especially at the price.

What is the mirror thickness?

I don't have it in front of me to measure, but the primary mirror is roughly 1/2" thick at the edge or maybe slightly thicker and the reflector mirror is just over 1/8 "

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NYJLGD Reflector Main Mirror 114mm with Secondary Mirror 25mm, Newton Reflector Spherical Mirror for DIY Astronomical Telescope Mirror Kit

NYJLGD Reflector Main Mirror 114mm with Secondary Mirror 25mm, Newton Reflector Spherical Mirror for DIY Astronomical Telescope Mirror Kit

Product ID: 453369593

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Details

Brand
NYJLGD
Optical tube length
900
Eye piece lens description
Barlow
Objective lens diameter
114
Telescope mount description
Equatorial

✨25mm Secondary Mirror

🌌900mm Focal Length

🔭114mm Diameter

Description

🌠 Elevate Your Stargazing Game!

CAPTURE THE COSMOS - Achieve stunning planetary photography with ease.
SPHERICAL PERFECTION - Enjoy crystal-clear images with a high-quality aluminized surface.
SCRATCH RESISTANT DESIGN - Built to last with a protective film for worry-free handling.
DIY TELESCOPE KIT ESSENTIAL - Perfect for hobbyists looking to build their own astronomical masterpiece.
UNLEASH YOUR INNER ASTRONOMER - Transform your stargazing experience with precision optics.

The NYJLGD Reflector Main Mirror is a premium 114mm spherical mirror with a 900mm focal length, complemented by a 25mm secondary mirror. Designed for DIY astronomical telescope kits, it features a durable, scratch-resistant aluminized surface, ensuring exceptional image quality for both amateur and professional astronomers.

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TrustScore 4.5 | 7,300+ reviews