Astronomik UHC-E Filter Pentax K Clip

This filter is designed specifically for the Pentax K-mount system. It clips directly into the camera body, making it compatible with most Pentax DSLR models that utilize this mount.

The 45nm bandwidth is relatively wide, which allows more light to pass through than a specialized narrowband filter. This makes it an excellent choice for comets and general deep-sky objects where you want to maintain natural star colors while still cutting through light pollution.

Yes, this filter is specifically engineered to block common sources of light pollution like streetlights and airglow. While it won't turn a bright city sky into a dark site, it will significantly improve the contrast of nebulae and comets against the background glow.

No, because this is a clip-in filter, it sits inside the camera body between the lens or telescope and the sensor. You do not need any extra adapters, but ensure your telescope's back-focus distance is compatible with the internal placement of the filter.

While it is primarily marketed for astrophotography, it can be used for visual observation if your setup allows for a clip-in filter. However, it is most effective when used with a camera sensor to pull out faint details in emission nebulae.