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Rosette Nebula

NGC 2237

C49 EmissionNebula Monoceros 관측 가능 난이도 6 Professional/Research - Benefits from UHC/H-alpha filter
Credit: Siderevs nuncivs. License: CC BY-SA 4.0. (Wikimedia Commons)
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특성

등급 6.0
각크기 1.3° × 50.0′
거리 5200 ly
Emission Nebula [Distance: 5200 ly]

위치 & 식별자

RA 06h 31m 52.1s
Dec +04° 54' 00.0"
별자리 Monoceros
카탈로그 C49

가시성

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Rosette Nebula 소개

설명

The Rosette Nebula (NGC 2237) is a large, circular emission nebula in Monoceros, about 5,200 light-years away. It spans 1.3 degrees (over 2 full Moons) and surrounds the open cluster NGC 2244 (C50), whose hot young stars ionize the hydrogen gas and create the rose-shaped glow.

관측 팁

Due to its large size, best in binoculars or a wide-field telescope at very low power. An OIII or UHC filter is almost essential to see the nebulosity visually. The embedded cluster C50 is easy without a filter. Best in winter evenings.

역사

The nebula was discovered in different parts by John Herschel and others in the 1830s. Lewis Swift observed additional sections. The full rosette shape was only appreciated through photography.

재미있는 사실

The Rosette Nebula contains enough gas to form about 10,000 solar-mass stars. The central hole is being carved out by the stellar winds and radiation from the hot OB stars in cluster C50. Eventually the gas will be completely dispersed.

커뮤니티 사진 (1)

Credit: Siderevs nuncivs. License: CC BY-SA 4.0. (Wikimedia Commons)

Credit: Siderevs nuncivs. License: CC BY-SA 4.0. (Wikimedia Commons)

Skybred Mar 2, 2026