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Two Clusters and a Giant

A guided image of the open star clusters M35 and NGC 2158 in Gemini taken last night using a ZWOASI183MC Pro astronomy camera on an Astro-Tech 70ED refracting telescope with a .8 focal reducer. Thirty 30 second images were processed using DeepSkyStacker, Adobe Lightroom, and Topaz AI. NGC 2158 is the smaller cluster on the top of the image and is at a distance of 14,700 light years from Earth. The larger cluster in the middle of the image is M35 and it is at a distance of 2800 light years from Earth. M35 is estimated to about 100 million years old where as NGC 2158 is thought to be about two billion years old. The bright star at the bottom on the image is 5 Geminorum. It is an orange giant at a distance of 568 light years from Earth and is 20.5 times the Sun's diameter in size.

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Uploaded on January 23, 2024