 |
| Time | 2010/05/23 19:41 UT - 20:33 UT |
| Place | φ = 30°31'16.21" N, λ = 114°21'29.99" E, +53m, Wuhan, China |
| Optics | Skywatcher 13-cm reflector, f/5 |
| Camera | Canon EOS 400D (ISO 800) |
| Exposure | 30 s x 61 frames |
| Processing | 61 images stacked in DeepSkyStacker 3.2.2 with dark frames subtracted and flatfielded; fixed with Fitswork V4.25, IRIS V5.56 and Photoshop CS3 Extended; 0.5x resized and cropped; |
| Comments | smog; city lights; The coma is typically in cyan. |
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| Processing | 61 images stacked in DeepSkyStacker 3.2.2 with dark frames subtracted; fixed with Fitswork V4.25, IRIS V5.56 and Photoshop CS3 Extended; color discarded; fourth root of pixel value calculated; 0.5x resized and cropped; |
| Comments | coma elongated or tail towards approximately p.a. 260 deg.; Click the above image to view a higher resolution one. |
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| Processing | 61 images stacked in DeepSkyStacker 3.2.2 with dark frames subtracted and flatfielded; fixed with Fitswork V4.25, IRIS V5.56 and Photoshop CS3 Extended; color discarded; squareroot and logarithmic of pixel value calculated for several times; |
| Comments | coma elongated or tail towards approximately p.a. 260 deg.; Click the above image to view a higher resolution one. |
 |
| Processing | 61 images stacked in DeepSkyStacker 3.2.2 with dark frames subtracted; fixed with Fitswork V4.25, IRIS V5.56 and Photoshop CS3 Extended; color discarded; Larson-Sekanina filter with a radius of 6.00 and a rotation of 15.0° applied; 0.5x resized and cropped; |
| Comments | No much detail is seen but the coma seems to be highly central condensed. Click the above image to view a higher resolution one. |
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| Comments | cropped from the original size image above; No much detail is seen but the coma seems to be highly central condensed and appeared elongated like a tilted bar? |