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Messier

Challenge #4 –

Target Type R. A. Dec. Constellation Magnitude Size M106 (NGC 4258) Spiral Galaxy 12h 18m 58s +47° 18′ 14″ Canes Venatici +8.3 17.0×7.2 arcmin Overview M106 is one of those curious entries in the Messier catalog that wasn’t actually added by Messier himself. The galaxy was discovered by Pierre Méchain in 1781 but was added …

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Challenge #3 –

Target Type R. A. Dec. Constellation Magnitude Size M93 (NGC 2447) Open Cluster 07h 44m 30s -23° 51′ 00″ Puppis +6.2 10.0 arcmin Overview You might just be able to see the shape of an arrow formed by the stars in this bright cluster in the image below. Its head is formed of the bright …

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Challenge #2 –

Target Type R. A. Dec. Constellation Magnitude Size M85 (NGC 4382) Lenticular Galaxy 12h 25m 24s +18° 11′ 25″ Coma Berenices +9.0 7.0×5.3 arcmins Overview This galaxy lies in the small constellation of Coma Berenices but is actually a member of the Virgo Cluster of galaxies, which includes 15 other galaxies in the Messier catalog. …

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Challenge #1 –

Target Type R. A. Dec. Constellation Magnitude Size M63 (NGC 5055) Spiral Galaxy 13h 15m 49s +42° 01′ 45″ Canes Venatici +8.52 11.8×7.2 arcmins Overview This galaxy, as you can see below, produces a stunning image of vast, roiling clouds of stars. It’s not a big leap of the imagination to see why it is …

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