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A Close-Up Photo of Comet Leonard by an Amateur Astronomer

posted by Jason Kottke   Jan 03, 2022

Comet Leonard

Using a composite of 25 different shots done over a period of 12 minutes in his backyard, amateur astrophotographer Andrew McCarthy created this stunning image of Comet Leonard. From PetaPixel:

Processing comet images is a challenge because even in the span of 12 minutes, the comet drifts across the frame relative to the background stars,” McCarthy tells PetaPixel. “Due to the comet’s motion, it has to be stacked differently. I tell the software to stack the images based on the comet position and star positions separately, which is then combined together to produce an image with the comet and stars both sharp.

See also this image of Leonard and McCarthy’s colorful photo of a full moon.