| Object : | M109 |
| Coordinates/Direction : | RA: 11h57m, DEC: +53o22' |
| Object size : | 7.6' x 4.7' |
| Object magnitude : | 10.6 |
| More to know : |
Wikipedia:
https://en.wikipedia.org/ wiki/ Messier 109 |
| Date : | 2013-11-24 |
| Time (UT) : | 23:51 to 00:05 |
| Mount : | Skywatcher EQ6 Pro Synscan |
| Guide : | - |
| Lens/telescope : |
Pentax 500mm f/4.5 (set to f/5.6) |
| Corrector/Barlow : | Built in |
| Field (FOV) : | 4.1x2.7 degree, before cropping |
| Filter : | none |
| Camera : |
Canon EOS 5D (Mk I) |
| Film/CCD : | Raw |
| Exp. time : | 20x30 seconds at ISO1000 |
| Image process tool : | AstroImageJ, Fitswork, Irfanview |
| Processing : | level, cal flat, dithering no bias dark noise filter |
| Weather : | clear with some clouds drifting by |
| Site : | Sweden, Stockholm, Hagsätra. Bortle class 9 |
| Comment : |
I had a lot of old photos on the hard disc which was unprocessed. They have got a rotation flag set that cause some of my image editors software to give up.
Now after I solved that problem with this
rotation flag set technique I can process them and compare with todays photos.
One of my first photos with a full frame camera, the first Canon 5D (Mk I).
The lens was an early 1970s Pentax with not so good color handling which cause a lot of problem, you see the red halos around the bright stars. |
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