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Lesson Tag: Nebula

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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NGC 1501, The Oyster Nebula

Target Type R. A. Dec. Constellation Magnitude Size NGC 1501 Planetary Nebula 04h 07m 13s +60° 55′ 03″ Camelopardalis +11.9 0.9×0.8 arcmins Overview This planetary nebula is very much in the same neck of the woods as the Kemble’s Cascade asterism (featured last month) and the open cluster NGC 1502, which is this month’s first …

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Pacman Nebula, NGC 281

Target Type R. A. Dec. Constellation Magnitude Size NGC281 Nebula 00h 52m 48s +56° 36′ 00″ Cassiopeia +7.4 35×30 arcmins Overview This might be one of the best-named objects we’ve looked for in the history of the VAC. When you see the picture below, it’s easy to understand why NGC 281 carries the rather more …

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The Eagle Nebula (M16)

Target Type R. A. Dec. Constellation Magnitude Size Eagle Nebula (M16) Emission Nebula 18h 18m 48s -13° 47′ 00″ Serpens +6.4 35′ x 28′ Overview We all became understandably fixated with Jupiter and Saturn in the summer. This month, they still present a pleasing view, which means many of us will have the Teapot asterism …

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Iris Nebula (NGC 7023)

Target Type R. A. Dec. Constellation Magnitude Size Iris Nebula Reflection Nebula 21h 01m 48s +68° 12′ 00″ Cepheus +7.2 18 x 18 arcmins Overview Let’s wrap up June’s challenges with a bright nebula in the constellation of Cepheus. From the mid-US, Cepheus is a circumpolar constellation, which means it never sets below the horizon. …

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Omega Nebula M17

Target Type R. A. Dec. Constellation Magnitude Size Omega Nebula Diffuse Nebula 18h 20m 48s -16° 11′ 00″ Sagitarius +6.0 46.0′ x 37.0′ Overview After the Orion nebula, the Omega nebula is the brightest nebula visible to those of us living in mid-northern latitudes. Also known as the Swan, Horseshoe, or Lobster Nebula, this object …

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The Crescent Nebula, NGC 6445

Target Type R. A. Dec. Constellation Magnitude Size Crescent Nebula Planetary Nebula 17h 50m 06s -20° 21′ 56″ Sagitarius +10.9 0.6′ x 0.5′ Overview The first two challenges this month are relatively easy, so I thought I’d balance things out with a trickier observing challenge. The crescent nebula can be glimpsed with smaller scopes under …

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The Skull Nebula, NGC 246

Target Type R. A. Dec. Constellation Magnitude Size Skull Nebula Planetary Nebula 00h 47m 04s -11° 52′ 22″ Cetus +10.4 1.0×3.5 arcmin Overview We stay with Cetus for our third challenge of the month: the Skull Nebula, NGC 246 (also, Caldwell 56). This planetary nebula was first observed by William Herschel in November 1785. What …

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