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Post thumbnail of Find IC 2391, Open Cluster at Omicron Velorum, Caldwell Object C85, One of 6 Deep Sky Objects to Predate Telescope
Continue reading Find IC 2391, Open Cluster at Omicron Velorum, Caldwell Object C85, One of 6 Deep Sky Objects to Predate Telescope

Find IC 2391, Open Cluster at Omicron Velorum, Caldwell Object C85, One of 6 Deep Sky Objects to Predate Telescope

Downloadable Deep Sky Field Guides at Amazon (click book cover for info.)Caldwell Object C 85, Open Cluster IC 2391
Observer Notes:

Persian Astronomer Al Sufi, observing from 32 degrees north, was the first to catalogue IC 2391.  He referred to it as a “nebulous star” in reference to omicron Velorum.   …

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