Time | 2009/08/21 18:02 UTC - 18:08 UTC |
Place | φ = 23°09'12".24 N, λ = 113°18'53".99 E, +18m, Guangzhou, China |
Optics | Canon EF 70-200mm f/2.8 L USM set to 200mm, f/2.8 |
Camera | Canon EOS 350D (ISO 800) |
Exposure | 2.5 s x 54 frames |
Processing | 54 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 remove the star-trails; 0.5x reduced and cropped; |
Comments | city light pollution; haze; comet pointed; |
Processing | 54 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 remove the star-trails; 0.5x reduced and cropped; details enhanced in different weights with Fitswork 3.93; |
Copyright © Man-To Hui (Wentao Xu)