Astronomik UHC 31mm Filter – Enhance Deep-Sky Viewing with High Contrast refractor telescope diagonal long propagation distance to cover

long propagation distance to cover space within 2000㎡ and around 100

unlimited usability from f/2

this range provides flexible magnification options for lunar

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Astronomik UHC 31mm Filter – Enhance Deep-Sky Viewing with High Contrast refractor telescope diagonal long propagation distance to coverAstronomik 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