Explore Scientific UHC filter (1.25")

Do you enjoy using your telescope to observe mysterious nebulae such as the Veil Nebula or the Orion Nebula? If you are a lover of deep sky objects, then a variety of deep sky filters are almost a must-have accessory. By using these filters, emission nebulae, planetary nebulae and supernova remnants can reveal details that would not be visible without a filter, or only from a very dark sky.

The Explore Scientific UHC (Ultra High Contrast) is a highly recommended general-purpose deep sky filter. Its principle of operation is quite simple: it only passes certain wavelengths of incoming light, precisely those at which the objects above are emitting. Specifically, only the emission lines of excited-state hydrogen and oxygen reach our eyes, all other wavelengths are "cut off" by the filter. The result is that the contrast between the sky and the observed object is spectacularly increased, with the nebula almost popping out of the sky, making faint details visible.

Of course, the filter can also be used from the city: it helps to combat stray background light caused by light pollution. However, they are not a substitute for dark skies, which means that if you are aiming to observe faint deep sky objects, it is definitely worth taking your binoculars under a dark, rural sky.

Each Explore Scientific deep sky filter is individually tested by the manufacturer, and a certificate is issued. Premium quality is thus guaranteed.