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Comet
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| Object : | Comet, C/2017 O1 ASASSN |
| Coordinates/Direction : | - |
| Object size : | - |
| Object magnitude : | - |
| More to know : |
You can read more about the comet on Seiichi Yoshida's homepage: http://www.aerith.net/ comet/ catalog/ 2017O1/ 2017O1.html |
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| Date : | 2017-09-26 |
| Time (UT) : | 00:06 to 01:00 |
| Mount : | SkyWatcher Star Adventurer, light weight mount |
| Lens/telescope : | Sigma APO 150 mm f/2.8 (set to f/4) |
| Corrector/Barlow : | - |
| Field (FOV) : | 13.6x9.1o (full frame) before crop |
| camera : | Canon 6D, QE=0.5, full frame, 20 Mpixel, 14 bit |
| camera temperature: | About 6o C above surrounding temperature |
| Film/CCD : | Raw, Cr2 |
| Filter : | none |
| Control system : | Camera focus by Canon Remote APP, camera exposure by intervallometer |
| Exp. time : | 45x60 seconds at ISO800 |
| Image process tool : | AstroImageJ with my own macros, Fitswork, IrfanView. |
| Processing : | demosaic, align rgb, no dark or bias, use dithering instead, median stack. |
| Comment : | This object was very weak and hard to align in the stacking process. But still something in the end. |
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