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.
|Telescope||Newton 150/600 mm|
|Focal length||630 mm|
|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,|