| Object : | M94 |
| Coordinates/Direction : | RA: 12h50m, DEC: +41o07' |
| Object size : | 11' x 9' |
| Object magnitude : | 8.99 |
| More to know : |
Wikipedia:
https://en.wikipedia.org/ wiki/ Messier 94 |
| Date : | 2023-01-03 |
| Time (UT) : | 23:22 to 00:02 |
| Mount : | SkyWatcher HEQ5 controlled by Astroberry |
| Guide : | Ekos internal guider in dithering mode, QHY5 camera with 200 mm f/3.5 lens |
| Lens/telescope : | Pentax 645 300 mm ED f/4 (medium format lens) |
| Corrector/Barlow : | - |
| Field (FOV) : | 6.8x4.5 degree, before cropping |
| Filter : | none |
| camera : | Canon 6D, controlled by Astroberry software |
| Film/CCD : | Raw |
| Exp. time : | 30x60 seconds, iso1600 |
| Image process tool : | AstroImageJ, Gimp, Irfanview |
| Processing : | cal dark, flat |
| Weather : | clear |
| Site : | Sweden, Stockholm, Hagsätra. Bortle class 9 |
| Comment : |
This night I planning to take photos of the comet ZTF. But I have to wait to 3 am in the morning.
The time before I use to take photos of the galaxy M 94.
It's four years since I took a photo of it. In that time I used my big TS130 refractor, even with that one the galaxy isn't big in the view.
Now I only have a tiny 300 focal lens, 1/3 of the telescope.
Will I see anything of the galaxy ?
The galaxy is the little bright dot in center. |
Crop around the galaxy M94 2023-01-03
|
| Date : | 2023-01-03 |
| Time (UT) : | 23:22 to 00:02 |
| Comment : |
If I crop the photo to 1:1 pixel scale it's easier to see that it's a galaxy.
Pretty well when in mind the small telescope I use and from the light polluted environment. |
| Date : | 2019-01-19 |
| Time (UT) : | 20:31 to 21:05 |
| Mount : | Skywatcher EQ6 Pro controlled by EQMOD and APT |
| Guide : | PHD2 in dithering mode and guide telescope 400 mm f/6.3 QHY5 |
| Lens/telescope : | TS130, 910mm f/7 |
| Corrector/Barlow : | Flat field corrector 3" x1 |
| Field (FOV) : | 2.25x1.5 degree, before cropping |
| Filter : | none |
| camera : | Canon 6D, controlled by APT |
| Film/CCD : | Raw |
| Exp. time : | 24x60 seconds, iso1600 |
| Image process tool : | AstroImageJ, Fitswork, Irfanview |
| Processing : | demosaic, no cal dark&bias, only dithering median stacking, flat cal, crop, level, gamma |
| Weather : | clear |
| Site : | Sweden, Stockholm, Hagsätra. Bortle class 9 |
| Comment : |
M94 is a galaxy discovered 1781 by the French astronomer Pierre Mechain.
It needs a lot of more exposure, many hours and longer focal length.
Interesting to see the weak halo around the arms of the galaxy, it's also arms of the galaxy. |
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