| Object : | Comet, Ison C/2012 S1 |
| 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/ 2012S1/ 2012S1.html |
| Date : | 2013-10-19 |
| Time (UT) : | 03:38 to 03:51 |
| Mount : | Skywatcher EQ6 Pro Synscan |
| Lens/telescope : |
Pentax 500mm f/4.5 (f/5.6) |
| Field (FOV) : | 4.1x2.7 degree, before cropping |
| Filter : | none |
| Camera : |
Canon EOS 5D |
| Exp. time : | 18x30 seconds at ISO1000 |
| Image process tool : | Fitswork, IrfanView. |
| Processing : | align rgb, dark, bias, median stack. |
| Site : | Sweden, Stockholm, Hagsätra. Bortle class 9 |
| Comment : |
Expectation about this comet was big, very bright and big, it failed.
Almost invisible, it's the green dot left and up from center.
The bright object lower right is the planet Mars. |
| Comment : |
This is a crop around the comet. Even if it's weak you can clearly see the tail.
The comet has this night magnitude 10, a couple of weeks later it peaked at magnitude -4 which is stronger than Hale Bopp.
But I had clouds on the sky these days. |
| Exp. time : | 38x30 seconds at ISO1000 |
| Image process tool : | Siril, Gimp, IrfanView. |
| Comment : |
With all 38 images I had and aligned on the stars it look like this.
This is a 800x800 1:1 crop around the comet. Siril which I used to stack couldn't handle comet stacking when it,s weak like this comet.
In this case AstroImageJ was better. |
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