Sky-Watcher UHC (Ultra High Contrast) Narrowband Filter 1.25"

UHC (ULTRA HIGH CONTRAST) FILTER 1.25"
ALL-ROUND NARROWBAND FILTER

The narrowband UHC filter, like the O-III filter, isolates the two lines of ionized oxygen (496 and 501 nm) as well as the H-beta line (486nm), which is emitted by planetary and most emission nebulae. This filter allows beautiful observation of objects like Orion, Lagoon Nebula, Swan and many other extended nebulae. It is also ideal for smaller telescopes, as it lets in more light than the O-III filter, in addition it suppresses the light pollution of the sky very well. The UHC filter is the best all-rounder for observing mists in the dark night sky.

Delivery:

Filter 1.25"
Storage box

Type: Narrowband filter for O-III and H-Beta line
Connection: 1.25" (28.5mm) filter thread