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 Astronomik UHC (Ultra High Contrast) is a particularly recommendable general-purpose deep sky filter. Its principle of operation is quite simple: it passes only 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.
All Astronomik deep sky filters are made with the utmost care and precision by the manufacturer, so that contrast and light transmission are the best possible. The extremely precisely polished glass material and the interference layer, vapor-deposited in about 130 layers, clearly elevate these filters above their competitors. Another advantage is their extraordinary scratch resistance, which is why they retain their transmission characteristics even after many years of intensive use. Thanks to premium quality materials and machining, Astronomik filters do not degrade the image at all. Unlike cheaper filters, Astronomik filters keep stars completely point-like.
All Astronomik deep sky filters come with a 10 year full warranty!