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Qicheng Zhang
cometary.org
did:plc:5esj7kfblmwhoajcamfz6xv5
Any optical gas coma this far away from the Sun should be very large/diffuse (many arcminutes wide). I'd guess the blue fringe is most likely an artifact from seeing variation across the different colors and/or a slight color channel misalignment (or if real, variation in dust color over the coma).
2025-07-17T05:38:15.343Z