Filters

• For 1.25" eyepieces
• Polar regions and Cloud belts of Saturn and Jupiter
• Surface Maria and plains on Mars
• Sky/planet contrast for Mercury and Venus

The Sirius Optics No. 58 Green 1.25" colour filter effectively blocks red and blue wavelengths to boost contrast when observing Jupiter's atmospheric features and Saturn's cloud belts. It's also an excellent choice for enhancing lunar surface detail, making it a versatile addition to any planetary observer's filter set.

The Sirius Optics No. 25 Red Colour Filter (1.25") blocks nearly all blue and green light, delivering strong contrast for planetary observation. Ideal for revealing detail in Jupiter's and Saturn's cloud bands, it truly excels at bringing out the polar ice caps of Mars with exceptional clarity.

• For 1.25" eyepieces

Enhances:

• Details of cloud belts and Great Red Spot on Jupiter
• Atmospheric clouds and polar caps on Mars
• Feature contrast on the Moon by reducing glare
• Cloud belts and rings on Saturn

The Sirius Optics Colour Filter No. 56 Light Green is a versatile 1.25" eyepiece filter designed to enhance planetary and lunar detail in telescopes up to 6" in aperture. With 53% light transmission, it boosts contrast of Martian polar caps, Jupiter's Great Red Spot, Venusian cloud patterns, and subtle lunar features, making it an excellent all-round choice for planetary observers.

• For use with 2” eyepieces.
• One of the essential eyepiece filters for visual astronomy.
• Reduce glare from bright objects such as the Moon, Venus, and Jupiter.
• Accentuate subtle detail for the Moon and planets
• Polar ice caps of Mars in large telescopes
• Limb hazes and terminator clouds of Mars

1.25" LRGB Filter Set for Colour imaging with Monochrome Cameras.

• For 1.25" eyepieces

Enhances:

• Dust storms, surface plains and Maria on Mars
• Cloud belts, polar regions, loops, festoons, and ovals on Jupiter
• Cloud belts and polar regions on Saturn