Nebula, Cluster

M10

Right Ascension 16 : 57.1 (h:m)

Declination -04 : 06 (deg:m)

Distance 14.3 (kly)

Visual Brightness 6.6 (mag)

Apparent Dimension 20.0 (arc min)

Discovered 1764 by Charles Messier.

This 7th mag globular cluster appears at about 8 or 9 arc minutes diameter when observed visually in smaller instruments. Average photos show it at about 15.1 arc minutes diameter, and deep photos show it to reach out to about 20 arc minutes, or 2/3 of the diameter of the Full Moon. At its distance of 14,300 light years, this corresponds to a linear diameter of 83 light years. Its brighter core which can be seen visually is only less than half as large, about 35 light-years. It is receding from us at 69 km/sec.

뱀주인 자리에 있는 넘입니다.
달이 휘엉청 밝은 초저녁 천정에 있을 무렵 메시에 구색 맞추기로 찍었습니다.

HO-BYM 292FN
AP EQ1200
ST-10XE w/ CFW-8a(-30)
L : 10min(1X1)
RGB : 5min ea(2X2)
NadA Observatory 1
Astrovill, Kangwon-do, KOREA
2005. 3. 19 03:15~



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제목: M10

등록일: 2005-03-22 17:58

M10LRGBss.jpg (41.0 KB)
M10LRGB.jpg (444.4 KB)

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