Secondary Mirror Plane 104mm (Small Axle) for Newton - Kepler GSO

The Kepler GSO 104mm (small axis) flat secondary mirror is an ideal solution for amateur astronomers looking to upgrade their Newtonian telescope or build their own instrument. Manufactured by the renowned brand GSO, this elliptical mirror benefits from high optical quality and excellent light reflection.

Features:

• Type: Flat secondary mirror
• Shape: Elliptical
• Size (small axis): 104 mm
• Thickness: 20 mm
• Material: BK7 glass with low thermal expansion coefficient
• Surface treatment: Multi-layered "Enhanced Aluminium" with 93% reflection
• Protection: Top layer of silicon dioxide (SiO2)
• Optical quality: "Diffraction limited" for a high-precision optical surface

Advantages:

• 93% light reflection, ensuring sharper and brighter images
• BK7 glass for rapid thermalization and minimizing thermal distortions
• Suitable for upgrading or building customized telescopes

Compatibility:

• Compatible with large Newtonian telescopes requiring 104mm elliptical secondary mirrors
• Ideal for Dobsonian telescopes equipped with GSO mirrors

Tips and Tricks:

• When installing, be sure to align the mirror correctly to ensure maximum optical performance.
• Handle the mirror with care and clean it only with specific products to preserve the coating quality.

Enjoy superior optical quality with the Kepler GSO 104mm secondary mirror, perfect for demanding Newtonian telescopes.