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Lesson Tag: Perseus

Double Stars in Perseus

Target Type R. A. Dec. Constellation Magnitudes Separation* (A) Miram(Struve 307) Double Star 02h 50m 39s +55° 53′ 59″ Pegasus +3.76, +8.50 30.4″ at 121° (B) Struve 331 Double Star 03h 00m 52s +52° 21′ 06″ Pegasus +5.26, +6.17 12.0″ at 086° (C) Struve 552 Double Star 04h 31m 25s +40° 00′ 33″ Pegasus +6.78, …

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The Little Dumbbell Nebula (M76)

Target Type R. A. Dec. Constellation Magnitude Size M76 – The Little Dumbbell Nebula Planetary Nebula 01h 42m 21s +51° 34′ 07″ Perseus 10.10 2.7 x 1.8 arcmins Overview All of this month’s challenges are in the constellation of Perseus, the hero rescuer of Andromeda, which rides high overhead in winter evenings. Our first object …

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M34 Open Cluster in Perseus

Target Type R. A. Dec. Constellation Magnitude Size M34 Open Cluster 02h 42m 05s +42° 45′ 00″ Perseus 5.2 35.0 arcmins Overview M34 was discovered by Charles Messier and included in his infamous catalog in 1764, although we have good reason to believe that the Italian astronomer Giovanni Battista Hodierna actually made note of it …

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Algol and Other Variable Stars

Target Type R. A. Dec. Constellation Magnitude Size Algol Star 03h 08m 10s +40° 57′ 20″ Perseus +2.1 (variable) n/a Overview From our perspective, the stars appear fixed; their position and brightness is unvarying. In reality, we know that the stars are whizzing around our Milky Way galaxy – just as our own Sun is …

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Open Cluster NGC 1245

Target Type R. A. Dec. Constellation Magnitude Size NGC 1245 Open Cluster 03h 14m 42s +47° 14′ 00″ Perseus +8.4 32 arcmins Overview Our final challenge of the month takes us to the constellation of Perseus and a small but beautiful cluster of stars. Its position within the constellation makes it a straightforward find and …

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