By Roberto Ortu | 2023-01-01
On 01/12/2023 07:30 pm by David Hoskin| Halifax, Nova Scotia, Canada
I captured this image of Messier 35 (on the left) and its neighbour, NGC 2158 (on the right), from my Bortle 7 backyard last night before the clouds arrived. Messier 35 is a large open star cluster that is 2,970 light years from Earth. It is about 24 light years in diameter and 110 million years old. NGC 2158 is a compact, metal-poor, open star cluster that is 11,000 light years from us. It is about 17 light years in diameter and estimated to be 2 billion years old. These star clusters are located in the constellation Gemini.
ZWO ASI533MC Pro camera and Optolong L-Pro filter, Celestron Omni XLT150 reflector, SkyWatcher EQR Pro mount.
Eighteen 8 minute subs (guided) plus calibration frames were stacked with DeepSkyStacker. Post-processing was with Siril, Photoshop and MS Photo.