Astronomik UHC 31mm Filter – Enhance Deep-Sky Viewing with High Contrast usb astronomy camera Non-glued substrate Surface Quality S/D

Non-glued substrate Surface Quality S/D (scratch/dig)= 60/40 (Refer to MIL-O-13830) Transmitted Wave front                                    Lambda/4 or better Parallelism less than 30 arcsec

this filter can also be used for near-infrared natural photography

allowing basic afocal or eyepiece-projection astrophotography

Best choice for your business

Astronomik UHC 31mm Filter – Enhance Deep-Sky Viewing with High Contrast usb astronomy camera Non-glued substrate Surface Quality S/DAstronomik UHC 31mm The Astronomik UHC is THE filter for visual observing. You will enjoy using your Astronomik UHC filter because you will see more stars and more details in deep sky objects compared to using filters from all other manufacturers. The Astronomik UHC (Ultra High Contrast) filter allows the transmission of nearly 100% of the radiation from both O III and the H beta lines. Though the second window for the H alpha line is not intended for