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  • BBC Sky at Night

    DEEP-SKY TOUR

    Sep 17, 2020 2 minutes

    1 M103

    his month’s ‘Deep-Sky Tour’ takes us through some of the wonders found in eastern Cassiopeia, a rich part of the sky thanks to the background presence of the Milky Way. M103 is an open cluster located a degree east-northeast of Ruchbah (Delta (ẟ) Cassiopeiae). At mag. +7.4 this is an easy find with any size instrument, but may look a bit underwhelming. The reason for this is that M103 is.

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