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C47

NGC 6934

구상성단 양호 (57/100)
C47 GlobularCluster Delphinus 관측 가능 난이도 2 Small telescope (4") - Higher magnification helpful
Credit: en:NASA, en:STScI, en:WikiSky. License: Public domain. (Wikimedia Commons)
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특성

등급 8.9
각크기 5.4′
거리 52000 ly
Globular Cluster [Distance: 52000 ly]

위치 & 식별자

RA 20h 34m 11.3s
Dec +07° 24' 14.4"
별자리 Delphinus
카탈로그 C47

가시성

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서베이 이미지

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C47 소개

설명

NGC 6934 is a globular cluster in Delphinus, about 50,000 light-years away. It is a moderately concentrated cluster spanning about 5.9 arcminutes with an integrated magnitude of 8.9.

관측 팁

Visible as a small, fuzzy ball in a 4-inch telescope. An 8-inch scope begins to resolve the outer edges into individual stars at 150x+. Located in Delphinus, best observed in summer and autumn evenings.

역사

Discovered by William Herschel on September 24, 1785. It is one of two Caldwell globular clusters in the small constellation Delphinus (along with C42).

재미있는 사실

NGC 6934 contains a relatively high number of RR Lyrae variable stars, which are used as standard candles for measuring distances in astronomy.

커뮤니티 사진 (1)

Credit: en:NASA, en:STScI, en:WikiSky. License: Public domain. (Wikimedia Commons)

Credit: en:NASA, en:STScI, en:WikiSky. License: Public domain. (Wikimedia Commons)

Skybred Mar 2, 2026