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Saxon 1.25" Colour Planetary Filter Set

Saxon 1.25" Colour Planetary Filter Set
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Colour planetary filters to enhance your viewing experience of the moon and planets.

Colour planetary filters to enhance your viewing experience of the moon and planets.

Colour planetary filters to enhance your viewing experience of the moon and planets.


The Saxon 1.25" Colour Planetary Filter Set is a great addition for lunar and planetary observing. They help increase image contrast and resolution on the Moon and planets as well as reduce glare from the full or near-full Moon.

The set comes in four colours of

  • Yellow (#12)
    • This filter increases the contrast of blue and green areas on Mars, thus darkening the Maria, oases and canal markings, while lightening the orange-hued desert regions. It sharpens boundaries of yellow dust clouds and the blue clouds in the Martian atmosphere and is thus a favorite for viewing the red planet.

      The yellow filter contrasts strongly with blue-colored features on Jupiter and Saturn, thus enhancing red and orange features of the belts and the zones. It darkens atmospheric currents containing low-hue blue tones and may be used for studies of the polar regions on these planets. Like other yellow-tinged filters, it improves detail in larger telescopes in Uranus and Neptune while with Venus it reveals otherwise low-contrast features. This filter also enhances definition in comet tails and is useful in increasing the contrast of lunar features in telescopes of 6" aperture and larger.

  • Red (#23A)
    • The filter is ideal for viewing the polar ice caps and surface features of Mars. It brings out yellow dust clouds and darkens Maria, oases and canal markings. On Jupiter and Saturn, this filter is useful for studying blue clouds.

      The filter also increases contrast between Mercury and the bright blue sky during daylight observations or during twilight, when the planet is near the horizon. On Venus, it occasionally reveals deformations of the terminator. For comets the filter improves definition of the dust tail.

  • Neutral Density (#25)
    • Neutral density filters are excellent filters to reduce the overall brightness of an image to cut down glare while viewing bright astronomical objects through a telescope. They are useful for splitting binary systems, comfortably observing the moon, or stacking with other planetary filters. ND filters retain true color balance of the objects being observed since all wavelengths are transmitted uniformly over the entire spectrum.

  • Blue (#80A). 
    • The medium blue is one of the most commonly used filters amongst the entire spectrum of filters. It is perhaps the best filter for the study of detail on Jupiter and Saturn. It enhances the contrast of rills and festoons in Jupiter's cloud belts, as well as details of the Great Red Spot. It brings out detail in Saturn's belts and polar features. The filter is very useful on Mars in showing the high clouds and ice caps, and is especially useful during the violet clearing.

      When used on Mercury around twilight, it improves the surface markings, whereas for Venus it shows dark shadings in the upper clouds. You can even use it on double stars - try it on Antares, for example. It is also a very useful filter for the Moon. The blue filter also brings out gas tails of comets.


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