If your looking to tease some extra detail out of planetary observation, consider using planetary filters. The filters are designed to only allow certain wavelengths of light to pass through to the eyepiece. This is useful to bringing out features on planets that may ordinarily be difficult to distinguish. Here are a few tips:
-Typically, a filter that is the color opposite of the feature your aiming to enhanced is used. For example, if your wanting to bring out the detail in Jupiter's ruddy brown cloud belts or the Great Red Spot, try using a blue filter. This is not always the case however. By using a red filter on Mars, which is already red, you can bring out detail on the surface. Try experimenting with different colors to see what effect they have.
-Treat the filters the same as an eyepiece. The filters are made out of optical glass, and may or may not be coated. Clean and care for them the same as you would for any other optics.
-Some filters are threaded on both sides. This can allow stacking of multiple filters.
-If your using a small aperture telescope, it's best to avoid using the darker tints because they block out a lot of light. This combined with the small aperture will result in very dark images.
For a visual demonstration of the use of filters on Jupiter, check out my newest video on Youtube:
http://www.youtube.com/watch?v=_hAOP6Dnrl8
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