Calcium & Sodium Filters

11 Item(s)
Set Ascending Direction
11 Item(s)
Set Ascending Direction
Serving as alternatives to traditional H-Alpha filters, Calcium K and Sodium D solar filters provide varying detail enhancement. Calcium K filters produce a blue violet image of the Sun and are popularly used for imaging and can be a great alternative for older viewers thanks to the blue tint providing a higher contrast view. Sodium D solar filters produce a yellow/orange view of the Sun much like H-Alpha filters and are designed for closer study of the Sun's surface activities.