Amazon.com : Neewer 1.25 inches Telescope Moon Filter, CPL Filter, 5 Color Filters Set(Red, Orange, Yellow, Green, Blue), Eyepieces Filters for Enhancing Definition and Resolution in Lunar Planetary Observation : Electronics
Amazon.com : Celestron – Neutral Density Filter for Telescope Eyepiece – Moon Filter Cuts Glare – Great for Venus & Double Stars – 13% Light Transmission – Works with Telescopes That Accept 1.25" Eyepieces : Electronics
Solar filters for observing the Sun
Amazon.com : Astromania Filter Set of 1.25-Inch Seven Telescope Filters - Incredible Value to Have Most commonly Used Color plantary Eyepiece Filters : Electronics
Meade #3200 Lunar & Planetary Telescope Color Filter Set - 07544 - Telescopes at Telescopes
Mighty Jupiter- Through a Telescope with Planetary Filters - YouTube