Amazon.com: 1.25'' UHC Filter+Moon Filter 2 Pcs Filter Set for Astronomy Monocular Eyepiece Observations of Deep Sky Object (Color : UHC Moon Filter) : Electronics
Amazon.com: Vbestlife 2inch Telescope Eyepiece Filter, 50.8mm UHC Filter Ultra High Contrast Light Pollution Reduction Lens Suitable for Observing Nebulae and Other Deep Space Objects : Electronics