1.25" UHC Filter for telescope eyepiece - Cuts light pollution deep sky astronomy imaging - Most accurate way to

- Most accurate way to guide - improved accuracy compared to using a separate guide scope

This iOptron CEM40 mount uses iOptron's patent-pending Universal Self-Centering Saddle (USCS)

the flattener is a push fit 2" that is threaded to accept all standard 2" filters

which adds to cost and complexity

1.25" UHC Filter for telescope eyepiece - Cuts light pollution deep sky astronomy imaging - Most accurate way toUHC Ultra High Contrast Filter 1. 25" Telescope Eyepiece Filter High Contrast Cuts Sky Light Pollution The UHC filter is the best all around dark sky nebula filter. It darkens the sky significantly with increased contrast between sky and nebula. The narrowband UHC 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. This filter permits superb