Constellation Cassiopeia

Exposure data

Optics: Pentax Asahi 55mm @ f/4 + 4,5″ Newton f=440mm
Camera: SBIG ST8300M
Filters: Baader HαLRGB
Exposure times: Hα: 6x15min L: 16x15min R: 6x15min G: 6x15min B: 6x15min
Exposure time total: 10h
Mount: Vixen New Atlux
Location: Erdweg/Germany (500m)
Date: 2012-08-27+28