What's Up? Webcast: Choosing a Refractor for Visual
What's Up? Webcast: Choosing a Refractor for Visual (Episode 256) Refractors are a great option for observing. With so many options what are the things one should consider? Apochromatic, achromatic? Long focal length or short? There are many options to consider for choosing a refractor for viewing. What's Up? webcast take place right here on the Sky-Watcher USA YouTube channel every Friday from 10am to 11am Pacific. For more information on Sky-Watcher products please visit www.skywatcherusa.com
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What's Up? Webcast: Picking a Refractor for Visual
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