The #58A Dark Green Filter is marvelous for increasing the contrast in Mars’ polar ice caps as well as yellow-tinted Martian dust storms. It also does a reasonable job of increasing the contrast of cloud patterns on Venus. This filter strongly rejects red and blue wavelengths and increases the contrast of these regions in Jupiter’s atmosphere as well as in the cloud belts. It can also enhance the white portions of Saturn’s cloud belts and polar regions. The green filter is useful for enhancing lunar detail. It also reduces blue-sky brightness here on Earth. This filter should be used only on large (over 8″) scopes.
|Dimensions||5 × 5 × 5 cm|