M13 Great Hercules globular cluster.
This is an LRGB image taken under a 3/4 moon on 18th. June 2013. Scope used and reducer: 10" RC f/8 w. .73 focal reducer
Mount Used:Paramount MX
Camera Used:St10 XME
ISO/Exposure:Lum 17x3 min - Red 6x3min - Green 4x3 min - Blue 10x3min
Location: APO - LEN - DI observatories - Malta
Seeing 1-10: 8-9/10 - 18th. June 2013