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1x ST4 Cable for autoguiding
making the RT85 suitable for night-time and emergency use
This keeps your images consistently sharp without needing manual intervention
Use it in traditional photography to create and experiment
If you do an exposure of 30 seconds without any filters from a light-polluted urban observing site
Astronomik UHC Filter – Ultra High Contrast for Deep-Sky Observing Fast UK Shipping 1x ST4 Cable for autoguidingThe 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 filters from other manufacturers. The Astronomik UHC (Ultra High Contrast) filter allows the transmission of nearly 100% of the radiation from both O III and H beta lines. Though the second window for the H alpha line is not intended for visual observing, it is important
