NGC 6475


Image NGC 6475 = M 7
Time 2009/08/15 15:09:50 UTC - 15:11:12 UTC
Place Taishan, Jiangmen, Guangdong Province, China
Optics Canon EF 70-200mm f/2.8 L USM set to 200mm, f/2.8
Camera Canon EOS 350D (ISO 800)
Exposure 4.5 s x 12 frames
Processing 12 images stacked in DeepSkyStacker 3.2.2 with dark frames subtracted and flatfiled frames divided; fixed with Fitswork 3.93 and Photoshop CS3 Extended to slightly remove the star-trails; 0.3x reduced;
Comments city light pollution; star-trails still obvious;




Copyright © Man-To Hui (Wentao Xu)

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