Messier 44, sometimes called Beehive cluster, is visually one of the biggest open cluster, which can be observed from northern hemisphere. Previous picture, taken 3 year ago, was done with focal length 1000 mm. Now I changed the strategy and used only 630 mm. I think this was a good idea and whole cluster is perfectly framed.
Technical details:
| Telescope | Newton 150/600 mm |
| Aperture | 150 mm |
| Focal length | 630 mm |
| Mount | Avalon M-Zero |
| Autoguiding | ZWO 174MM, Guidescope 30 mm |
| Camera | ZWO 071 Pro @-10°C |
| Corrector | Explore Scientific HR |
| Filters | Astronomik L-1 - UV IR Block Filter |
| Exposure | 76x180s, Gain 94, bin 1x1, |
| Date | 2020-03-46 |