約45分鐘.
雖然貓爪星雲頗暗(10等),但由於菲林對紅光敏感,所以連馬頭星雲那麼暗用50mm鏡頭曝光幾分鐘都拍到
Lens:FSQ-106 (4"f/5)
Mount:EM-200USD2
Camera:Pentax 67II
Film:E200 (6x7 film)
Exp:45minutes
Manula guided by GA-4 guiding eyepiece
Taken at:W. Australia
大麥哲倫星系 LMC data same as above
Exp: 1hour