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Diameter question
Hi,
My understanding is, to see deep space, diameter is key as the greater the width the better it's light gathering capabilities but how can the high end refractors such as the Skywatcher Black Diamond have such excellent deep space capabilities with such a small diameter.
On the Skywatcher website, the Black Diamond has a Faintest star magnitude of 13.1, where a 10" Dob has 13.9.
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