QHY5L-II在长焦距望远镜下离轴导星效果(6*30分钟)I used the mono for OAG on my C-14 CGE with PHD guiding. The B-33 horse-head nebulae was taken by QHY9M, 6 30-minute H-alpha sub-exposures at prime focus. I can now confidently find guiding stars with this high sensitivity guider for any imaging session which was impossible in the past at 4 meter focal length.(我用黑白版通过偏轴导星器连接我的C14望远镜及CGE赤道仪。使用QHY9M在望远镜主焦点上拍摄了6张每张30分钟的Halpha窄带B33码头星云。采用这款高灵敏度的导星相机我能很方便的在任何时候找到导星,这在4米焦距上以往是不可能完成的事情。) --manfok