| Object : | M106 |
| Coordinates/Direction : | RA: 12h18m, DEC: +47o18' |
| Object size : | 18.6' x 7' |
| Object magnitude : | 8.4 |
| More to know : |
Wikipedia:
https://en.wikipedia.org/ wiki/ Messier 106 |
| Date : | 2020-01-04 |
| Time (UT) : | 23:06 to 00:06 |
| Mount : | Skywatcher EQ6 Pro controlled by EQMOD and APT |
| Guide : | PHD2in dithering mode and guide telescope 400 mm f/6.3 QHY5 |
| Lens/telescope : | TS130, 910mm f/7 |
| Corrector/Barlow : | Field flattener 3" x1 |
| Field (FOV) : | 2.25x1.5 degree, before cropping |
| Filter : | none |
| camera : | Canon 6D, controlled by APT |
| Film/CCD : | Raw |
| Exp. time : | 60x60 seconds, iso1600 |
| 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 : |
After I took this photo I found that I have done that long time ago with older equipment.
You can compare them here. |
| Date : | 2020-01-04 |
| Comment : |
After a crop of the image and magnifying it you see a lot of other galaxies. |
| Date : | 2018-01-07 |
| Time (UT) : | 21:47 to 00:40 |
| Mount : | EQ6 controlled by EQMOD |
| Guide : | PHD2 in dithering mode, QHY5 camera, 400 mm f/6.3 guide telescope |
| Lens/telescope : | TS130, 910mm f/7 |
| Corrector/Barlow : | Field flattener 3" x1 |
| Field (FOV) : | 2.25x1.5 degree, before cropping |
| Filter : | none |
| camera : | Canon 5D |
| Film/CCD : | Raw |
| Exp. time : | 110x60 seconds, iso800 |
| Image process tool : | AstroImageJ, Fitswork, Irfanview |
| Processing : | level, cal flat, dithering no bias dark noise filter |
| Weather : | clear sky |
| Site : | Sweden, Stockholm, Hagsätra. Bortle class 9 |
| Comment : |
This photo is taken with my earlier Canon 5D camera, a bit noisier but otherwise not too bad.
But one problem and that is I have a lot of dust and dirt on the sensor.
I still have very big problem to keep the sensor clean. |
| Date : | 2014-03-09 |
| Time (UT) : | 21:47 to 00:40 |
| Mount : | EQ6 controlled by EQMOD |
| Guide : | no guiding |
| Lens/telescope : | Pentax 500 mm f/4.5 (set to f/4.5) |
| Corrector/Barlow : | Builtin in the lens |
| Field (FOV) : | 4.1x2.7 degree, before cropping |
| Filter : | none |
| camera : | Canon 5D |
| Film/CCD : | Raw |
| Exp. time : | 20x30 seconds, iso1600 |
| Image process tool : | AstroImageJ, Fitswork, Irfanview |
| Processing : | level, cal flat, dithering no bias dark noise filter |
| Weather : | clear sky |
| Site : | Sweden, Stockholm, Hagsätra. Bortle class 9 |
| Comment : |
This is the oldest photo I have on the M106 galaxy. It was taken with a big camera lens, a Pentax 500 mm f/4.5.
Compare this lens with the new TS APO triple lens with field flattener.
The new one has much better color handling and almost no vignetting (on full frame sensor) which was heavy on this Pentax lens. |
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