Telescopes & Astronomy

Astrodon Narrowband filters set a new bar of performance and durability for imaging and research.

Astrodon 5nm Narrowband Filters – H-alpha 5nm

H-α (hydrogen-alpha) at 656 nm (nanometers) is deep red in color and the most popular narrowband filter. Hydrogen is ubiquitous in the cosmos and is present in emission nebula (North American, Pelican), planetary nebula (Dumbbell, Ring), Wolf-Rayet objects (Crescent, Thor’s Helmet) and supernova remnants (Veil).

The ZWO narrowband O-III 7nm filter is designed for nebula observation allowing 7nm bandwidth of light centered on a wavelength of 500nm through,  which corresponds to OIII emission lines, blocking out all other light.  Adding the ZWO O-III Narrowband filter to your imaging collection will help you go beyond the RGB imaging and will help capture your favorite nebulas in a totally new light, no matter how polluted your skies may be!

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• Fits Optical Tube Diameter 7 1/8" (181mm) to 7 3/8" (187mm)
• Safe for viewing the Sun
• Blocks 99.999% of incoming light
• Compatibility: LX70 R6, LX65 6" MAK & 6" ACF™, LX85 6" MAK, ACF™ & 6" Reflector 

• Fits 1.25" eyepieces

Enhances:

• Clouds and atmospheric features of Venus
• Atmospheric clouds and polar ice caps on Mars
• Cloud belts and moon transits of Jupiter
• Cloud belts on Saturn

The Sirius Optics Colour Filter No. 12 Yellow (1.25") is a must-have for Mars observers, enhancing contrast between blue-green surface features and orange desert regions. It sharpens the visibility of dust clouds, canal markings, and atmospheric details, making it a favourite filter for exploring the red planet through your telescope.

The Sirius Optics #82A Light Blue 1.25" filter enhances areas of low contrast on planetary and lunar surfaces without significantly reducing overall brightness. Ideal for observing the Moon, Mars, Jupiter, and Saturn, this filter brings out subtle surface details that might otherwise go unnoticed, making it a versatile and popular choice for amateur astronomers.