365Astronomy UHC - Ultra High Contrast Nebula Filter (1.25")
The 365Astronomy UHC Nebula Filter is an affordable, but still high quality filter that we recommend mainly to improve visual observations of deep sky objects, mainly nebulosities.
It can also be used as a photographic filter to get rid of the side effects of light pollution.
Its spectrum is about 35nm wide and is centered at 494nm, so it will let through bot OIII and H-beta fotons.
It is very similar to the UHC filter that we also sell under the Skywatcher brand (supplied by Optical Vision Ltd.).
Available in 1.25" and 2" sizes to be used with standard 1.25” or 2” astronomical eyepieces.
Supplied with storage case.