With this 90-degree erecting prism transform your telescope into a telescope for nature observation with upright and left-right corrected image
This is a great diagonal for daytime terrestrial use and night time astronomy applications for telescopes or spotting scopes;filter thread for any 1.25 inch filter and accepts standard 1.25 inch eyepieces
Constructed from genuine optically processed BK7 glass; this product features a high-quality optical prism instead of a mirror ensuring clear and sharp image quality
Neutral density filters are excellent filters to reduce the overall brightness of an image to cut down glare while viewing bright astronomical objects through a telescope
These three ND moon filters are useful for splitting binary systems; comfortably observing the moon; or stacking with other planetary filters