Telescope is out after long time. My main targets for this night are some galaxies in constellation Leo, but I have to wait for these galaxies to cross the meridian (line splitting west and east). By browsing in planetarium software I found one object, which can fill the gap – it was the open cluster M48. Open cluster usually don’t need super dark skies, therefore I can capture them during the evening, when there is still strong light pollution. My previous picture was taken by much longer focal length, therefore the cluster covered nearly whole field of view. This time the background if filled by many stars, which are not members of this cluster.
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 | 2020-03-18 |
