Olivon Filter Wheel. Handy and versatile wheel holds up to and INCLUDES five 1.25″ filters for visual and/or imaging use. A huge time-saver for filtered planetary and lunar observation using different color filters, or for tri-color astrophotography pursuits. Simply rotate the filter wheel dial until the desired filter clicks securely into place in the light path. Includes red, green, blue, yellow and ND96-03 (50%) 1.25″ filters, or you can leave one space blank for unfiltered viewing. Requires additional 20mm focus travel. Protects astrophotography filters from dust, dirt, and impact, and keeps them ready for action.