astroenthusiast 279 Posted July 17, 2021 (edited) The image of the Sun was captured in Calcium-K light, using a Baader filter combined with a Daystar Quark Calcium-H line filter. The camera used was an ASI174 CMOS monochrome camera, and a UV light filter to reduce heating. The Explore Scientific ED 102mm APO Triplet refractor at F/28 was used and mounted on a Sky-Watcher EQ6-R Pro equatorial mount. Edited July 17, 2021 by astroenthusiast Link to comment
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