saxon Colour Planetary Filter No.80A – Blue (1.25")

The saxon Colour Planetary Filter No.80A – Blue (1.25") is a favourite among amateur astronomers for its ability to bring out fine atmospheric and surface details across a range of celestial targets. This light blue filter is particularly effective for highlighting Mars’ atmospheric features, enhancing contrast on Saturn’s belts and polar zones, and improving lunar surface detail.

It is also commonly used to resolve binary stars—systems like Antares benefit from improved separation of the primary and companion stars. By reducing red and orange wavelengths, this filter makes subtle surface and atmospheric features stand out with greater clarity.

Ideal for use with any standard 1.25" eyepiece, the No.80A Blue Filter is a practical addition for observers who want sharper views of the Moon, gas giants, and challenging stellar pairs.

Key Features:

• 1.25" threaded filter compatible with standard eyepieces
• Light blue filter enhances Mars’ atmospheric detail
• Improves contrast on Saturn’s belts and polar zones
• Brings out lunar surface textures and shading
• Resolves binary stars like Antares with better separation
• Blocks red & orange wavelengths for sharper views
• Premium optical glass for clear, high-contrast imaging