A new globular for me and constellation Serpens

Object IDM5, NGC5904
DetailsGlobular Cluster, Serpens
Mag. 5.95
Size 23′
2020-04-15 23:54 UT ->
Seeing very good
Telescope250mm f4.8 Newtonian
CameraAtik 460EX @-15C
Exposure(s)10x180s each RGB
darks, flats, bias
CaptureAPT
ProcessingAPP, Photoshop