Skywatcher 2" UHC Filter

Skywatcher 2'' UHC Photo Filter

The Narrowband UHC Filter, Like The O-III Filter, Isolates The Two Doubly Ionized Oxygen Lines (496 and 501nm) In Addition To The Hydrogen-Beta Line (486nm) Emitted By Planetary And Most Emission Nebulae.

The UHC Filter Permits Superb Views Of Objects Like The Orion, Lagoon, Swan And Other Extended Nebulae. It Performs Well In Mmaller Aperture Instruments Owing To Its Greater Light Transmission Than The O-III, Yet Still Suppresses Light Pollution Well.

The UHC filter is the best all-round dark-sky nebula filter

Provide Similar Performance To Orion Ultrablock/Baader Planetarium UHC Filter, Due To Similar Bypass Band, Best Value For UHC Filter