Exposure data
Telescope: 4.5″ Newton f=440mm
Camera: SBIG ST8300M
Filters: SBIG LRGB + Astronomik Hα (13nm)
Exposure times: Hα: 4x10min L: 10x10min R: 3x10min G: 3x10min B: 3x10min
Exposure time total: 3h 50min
Mount: Vixen New Atlux
Location: Erdweg/Germany (500m)
Date: 2008-07-10+11 + 2009-08-13
Object data of NGC 6559
Object type: Emission nebula
Size: 8′ x 5′
Magnitude: 7.5 mag
Constellation: Sagittarius
Distance: 5000 Ly
