ORANGE - #21 Orange 46% T... Moon - Greatly enhances lunar features. Jupiter - Improves appearance and detail revealed in structure of Jovian belts. Enhances viewing of festoons and polar regions. Mars - Reduces light from the blue and green areas which darken the maria, oases and canal markings, while lightening the orange-hued desert regions. Also sharpens the boundaries of yellow dust clouds. Mercury -Reduces the brightness of blue sky during daylight observing, to reveal surface features. Saturn - Improves structure of the Saturnian bands and highlights blue polar regions. Venus - Use during daylight observing to reduce brightness of blue sky. Comets - Enhances definition of comet dust tails and heads in larger telescopes (11" and greater aperture). Solar-When using a Celestron Solar Filter, adding this orange filter will give true colour rendition.

BLUE - #8QA Light Blue 30% T... Moon - Enhance lunar detail. Jupiter - Enhance the boundaries between the reddish belts and adjacent bright zones. Useful for viewing the Great Red Spot. Mars - Very useful during the violet clearing. Helpful in studying surface features and polar caps. Mercury - Improve observation of dusky surface markings at twilight, when the planet is near the horizon. Saturn - Enhance low-contrast features between the belts and zones. Venus - Useful for increased contrast of dark shadings in upper Venusian clouds. Comets - Bring out the best definition in comet gas tails.

YELLOW #12 Deep Yellow 74% T... Moon- Enhance lunar features. Jupiter- Penetrate and darken atmospheric currents containing low-hue blue tones. Enhance orange and red features of the belts and zones. Useful for studies of the polar regions. Mars- Reduce light from the blue and green areas which darken the maria, oases and canal markings, while lightening the orange-hued desert regions. Also sharpen the boundaries of yellow dust clouds. Neptune - Improve detail in larger telescopes (11" and larger apertures). Saturn - Penetrate and darken atmospheric currents containing low-hue blue tones. Enhance orange and red features of the belts and zones. Uranus - Improve detail in larger telescopes (11" and larger apertures). Venus - Reveal low-contrast surface features. Comets -Enhance definition in comet tails.

RED #25 Red 14% T... Moon - Improves lunar features. Jupiter- Useful for studying bluer clouds. Mars - Ideal for observation of the polar ice caps and features on the Martian surface. Sharpens the boundaries of yellow dust clouds. Mercury - Improves observation at twilight, when the planet is near the horizon. During daylight, it reduces the brightness of the blue sky to enhance surface features. Saturn - Useful for studying bluer clouds. Venus - Use during daylight observing to reduce brightness of blue sky. Occasionally deformations of the terminator are visible.

GREEN #56 Light Green 53% T... Moon- Enhances lunar features. Jupiter- Increases visibility of the Great Red Spot. Useful for observing the tow-contrast hues of blue and red that exist in the Jovian atmosphere. Mars -Excellent for increased contrast of Martian polar caps, low clouds and yellowish dust storms. Venus - Useful for Venusian cloud pattern studies. Reduces brightness of blue sky during daylight observing.

GREEN #58A Green 24% T... Saturn Enhances white features in the Saturnian atmosphere. Comets Useful for observing brighter comets, Moon- Enhances lunar features. Jupiter- Increases visibility of the Great Red Spot. Useful for observing the low-contrast hues of blue and red that exist in the Jovian atmosphere. Mars -Excellent for increased contrast of Martian polar caps, low clouds and yellowish dust storms. Venus - Useful for Venusian cloud pattern studies. Reduces brightness of blue sky during daylight observing.

MOON FILTER 1.25... Moon Filter is ideal for reducing the brightness of the moon and improving contrast, so greater detail can be observed on the lunar surface. The clear aperture is 21mm for the 1%" filter. Transmission is about 18%.

Neodymium 1.25...The Baader Skyglow filter is a universal contrast filter for all objects within our solar system. It enhances contrast of all reddish details (for example the famous Great Red Spot on Jupiter), as well as of blue details (like some surface and atmospheric details on Mars). A positive feature is that the image retains its natural colours in contrast to regular colour filters.
You can also use the filter on the deep sky, contrast is enhanced a little in bright planetary nebulae or other nebulous objects, like for instance the Great Orion Nebula.
Obviously the Skyglow filter can also be used for astro-imaging for a general boost in contrast.