Gosky 5-position 1.25inch Manual Filter Wheel/Revolver for Astronomical Telescope - With 5 Planetary Filter Set Just rotate the wheel and the selected filter rotate into place quickly and easily. Change filters without removing your telescope eyepiece or astrophotography camera. Up to 5-position, Standand 1.25 Threads crafted well for a variety of different brand filters. Fully sturdy aluminum constructed- suitable for heavy cameras. Easy to use -just attached to your focuser either by the supplied 1.25" nosepiece adaptor or via a T-thread. Protects astrophotography filters from dust, dirt, and impact, and keeps them ready for action. 4 color planetary filters -- The four color filters (Red, Blue,Yellow, Green) highlight features on Mars, Jupiter, and Saturn.They are an essential tool of the lunar and planetary observer, for filters permit the observation and photography of surface detail that is often virtually invisible without filtration. Moon filter -- helps to dim the bright light from the Moon, making it more comfortable to view so you can see more detail and surface features.