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An emerald eye

Chris Schur from Payson, Arizona

Comet C/2025 R3 (PanSTARRS) graces the constellation Pegasus with an emerald-green coma and a spectacular blue ion tail stretching more than 10° across the eastern dawn sky of April 9. The imager captured 28 minutes of exposure with a 135mm f/2 lens and a one-shot color camera, stacking frames registered to the first image to preserve the silhouetted horizon.