Color filters are used to highlight the details of observed objects such as planets and their rings. All filters can be used on standard 1.25 ”eyepieces so they are very versatile. You simply screw on and observe.
The set contains 4 filters # 21 orange (47%), # 80A light blue (30%), # 15 dark yellow (67%) and polarizing. Each filter has an anodized aluminum frame with a double-sided thread, which allows you to combine the filters together to achieve a variety of effects and increase the contrast of the observed objects. The special anti-reflective coatings of each filter eliminate the formation of unwanted reflections and piglets. The filters are supplied in a practical protective plastic case. "