Amazing Sky by Alan Dyer

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Messier Objects

Image 27 of 286

The Clusters and Nebulas of Gemini

Gemini Clusters and Nebulas (200mm 5DII).jpg

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The field of clusters and nebulosity in Gemini, with Messier 35 the main open star clusters here. Below M35 is NGC 2158. The nebulosity at left between Mu and Eta Geminorum is IC 443, a supernova remnant, aka the Jellyfish Nebula. The nebula at bottom is IC 2174, just over the border in Orion and aka the Monkeyhead Nebula.

The field is similar to that of binoculars.

This is a stack of 10 x 3-minute exposures with the filter-modified Canon 5D MkII at ISO 800 and 200mm Canon L-Series lens at f/2.8. Some light haze passing through in some exposures added the natural star glows. I left those in as part of the stack to add the glows. Taken with the Fornax Lightrack tracker as part of testing. Taken from home on a rare fine and mild winter night, January 4, 2019. Diffraction spikes added with Astronomy Tools.
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© 2019 Alan Dyer
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5630x3777 / 18.4MB
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The field of clusters and nebulosity in Gemini, with Messier 35 the main open star clusters here. Below M35 is NGC 2158. The nebulosity at left between Mu and Eta Geminorum is IC 443, a supernova remnant, aka the Jellyfish Nebula. The nebula at bottom is IC 2174, just over the border in Orion and aka the Monkeyhead Nebula.<br /> <br /> The field is similar to that of binoculars. <br /> <br /> This is a stack of 10 x 3-minute exposures with the filter-modified Canon 5D MkII at ISO 800 and 200mm Canon L-Series lens at f/2.8. Some light haze passing through in some exposures added the natural star glows. I left those in as part of the stack to add the glows. Taken with the Fornax Lightrack tracker as part of testing. Taken from home on a rare fine and mild winter night, January 4, 2019. Diffraction spikes added with Astronomy Tools.