| Object : | Comet, Catalina C/2013 US10 |
| 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/ 2013US10/ 2013US10.html |
| Date : | 2015-12-08 |
| Time (UT) : | 03:59 to 04:38 |
| Mount : | SkyWatcher EQ6 controlled by Windows server with APT, EQMOD |
| Guide : | Comet guided by rel guiding on a star, PHD2 and QHY5 camera |
| Lens/telescope : | TS130, 910mm f/7 (682mm, f/5.3) |
| Corrector/Barlow : | Riccardi flat field corrector 2.5" x0.75 |
| Field (FOV) : | 3x2 degree, before cropping |
| Filter : | none |
| camera : | Canon EOS 6D |
| Exp. time : | 48x30 seconds, iso800 |
| Image process tool : | Fitswork, Irfanview |
| Processing : | align, resize, level, cal dark and gamma image processing |
| Site : | Sweden, Stockholm, Hagsätra. Bortle class 9 |
| Comment : |
Comet discovered 2013.
A test with off-axis indirect auto guiding on stars and still follow moving objects like comets.
When this photo was taken the comet was only 10 degrees over the horizon, it will be better in the middle of January. |
| Date : | 2015-12-08 |
| Time (UT) : | 03:59 to 04:38 |
| Image process tool : | Siril, Gimp, Irfanview |
| Processing : | align, resize, level, cal dark and gamma image processing |
| Comment : |
Same photo but processed with more modern tools, push the contrast to the limit to make the tail more visible.
The high contrast also make all defects visible, optics, dust blobs |
| Date : | 2015-12-14 |
| Time (UT) : | 03:47 to 04:24 |
| Mount : | SkyWatcher EQ6 controlled by Windows server with APT, EQMOD |
| Guide : | Comet guided by rel guiding on a star, PHD2 and QHY5 camera |
| Lens/telescope : | TS130, 910mm f/7 (682mm, f/5.3) |
| Corrector/Barlow : | Riccardi flat field corrector 2.5" x0.75 |
| Field (FOV) : | 3x2 degree, before cropping |
| Filter : | none |
| camera : | Canon EOS 6D |
| Exp. time : | 52x30 seconds, iso800 |
| Image process tool : | Siril, Gimp, Irfanview |
| Processing : | align, resize, level, cal dark and gamma image processing |
| Site : | Sweden, Stockholm, Hagsätra. Bortle class 9 |
| Comment : |
One week later we had a clear sky again. Now it's closer to the comets maximal brightness, still it's weaker.
I don't remember what cause it, probably the atmosphere. |
| Date : | 2016-12-14 |
| Time (UT) : | 23:05 to 23:49 |
| Mount : | SkyWatcher EQ6 controlled by Windows server with APT, EQMOD |
| Guide : | Comet guided by rel guiding on a star, PHD2 and QHY5 camera |
| Lens/telescope : | TS130, 910mm f/7 (682mm, f/5.3) |
| Corrector/Barlow : | Riccardi flat field corrector 2.5" x0.75 |
| Field (FOV) : | 3x2 degree, before cropping |
| Filter : | none |
| camera : | Canon EOS 6D |
| Exp. time : | 60x30 seconds, iso800 |
| Image process tool : | Siril, Gimp, Irfanview |
| Processing : | align, resize, level, cal dark and gamma image processing |
| Site : | Sweden, Stockholm, Hagsätra. Bortle class 9 |
| Comment : |
Over the Christmas it was bad weather and I had to wait to the next year in middle of January until I could take more photos.
Now we have passed the maximum and the comet is much weaker, still it's possible to see traces of the tail. |
| Date : | 2016-01-15 |
| Time (UT) : | 00:11 to 00:57 |
| Mount : | SkyWatcher EQ6 controlled by Windows server with APT, EQMOD |
| Guide : | Comet guided by rel guiding on a star, PHD2 and QHY5 camera |
| Lens/telescope : | TS130, 910mm f/7 (682mm, f/5.3) |
| Corrector/Barlow : | Riccardi flat field corrector 2.5" x0.75 |
| Field (FOV) : | 3x2 degree, before cropping |
| Filter : | none |
| camera : | Canon EOS 6D |
| Exp. time : | 38x60 seconds, iso800 |
| Image process tool : | Siril, Gimp, Irfanview |
| Processing : | align, resize, level, cal dark and gamma image processing |
| Site : | Sweden, Stockholm, Hagsätra. Bortle class 9 |
| Comment : |
This night I could take one more set of photos, I increased the exposure time to 60 seconds. |
| Date : | 2016-01-17 |
| Time (UT) : | 00:25 to 00:35 |
| Mount : | SkyWatcher EQ6 controlled by Windows server with APT, EQMOD |
| Guide : | Comet guided by rel guiding on a star, PHD2 and QHY5 camera |
| Lens/telescope : | TS130, 910mm f/7 (682mm, f/5.3) |
| Corrector/Barlow : | Riccardi flat field corrector 2.5" x0.75 |
| Field (FOV) : | 3x2 degree, before cropping |
| Filter : | none |
| camera : | Canon EOS 6D |
| Exp. time : | 9x60 seconds, iso800 |
| Image process tool : | Siril, Gimp, Irfanview |
| Processing : | align, resize, level, cal dark and gamma image processing |
| Site : | Sweden, Stockholm, Hagsätra. Bortle class 9 |
| Comment : |
Two days later after mid night it came openings in the clouds.
I setup the equipment and hope I could some more photos.
But the clouds come back and it was only 9 photos of bad quality I got. |
| Date : | 2016-01-18 |
| Time (UT) : | 22:43 to 23:07 |
| Mount : | SkyWatcher EQ6 controlled by Windows server with APT, EQMOD |
| Guide : | Comet guided by rel guiding on a star, PHD2 and QHY5 camera |
| Lens/telescope : | TS130, 910mm f/7 (682mm, f/5.3) |
| Corrector/Barlow : | Riccardi flat field corrector 2.5" x0.75 |
| Field (FOV) : | 3x2 degree, before cropping |
| Filter : | none |
| camera : | Canon EOS 6D |
| Exp. time : | 22x60 seconds, iso800 |
| Image process tool : | Siril, Gimp, Irfanview |
| Processing : | align, resize, level, cal dark and gamma image processing |
| Site : | Sweden, Stockholm, Hagsätra. Bortle class 9 |
| Comment : |
The night after I took the last photos of the comet.
Very weak now, if I had been at a dark place I could got good quality photos even now.
The temperature all these nights was from -5 to +6 degrees Celsius.
Good for the camera, the noise get lower at low temperatures. |
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