M25 (IC 4725)

Typ:	Open cluster
Constellation:	Sagittarius
Size:	40'
Distance:	2.0 kLj
Brightness:	4.6 mag
Position:	RA:18h 31.6m DEC:−19° 15′
Max. height:	20.75°, Jun. (midnight at +50°N)
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Discovered:	Jean-Philippe Loys de Chéseaux, 1745
Details:	Read more on Wikipedia

The next image shows the full frame in a manual edit (580mm, ASI2600MM, LRGB 1h).