how to reach focus when using a filter with the skywatcher evoguide 50ED flattener

Описание к видео how to reach focus when using a filter with the skywatcher evoguide 50ED flattener

the stock evoguide 50ED flattener has less backfocus than the starizona field flattener but it is less expensive, in this video i will show you how you can use the cheaper one and still reach focus with your astronomy cameras

#skywatcher #telescope #guide #zwocameras #astrophotography

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