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Jackie Branc
@jackiebranc.com

1/2🧵 🔭🧪 8527 Greebo Repeated | The 3D Interstellar Medium at Milliparsec Scales: Pathbreaking Observations of Cas A Thermal Light Echoes #JWST PI: Joshua Peek @jegpeek.bsky.social NIRCam: F200W, F444W, green channel simulated Credit: NASA/ESA/CSA/STScI/Jackie Branc #CassiopeiaA #CasA

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Josh Peek
@jegpeek.bsky.social

Lovely visualization! Our team is hard at work making starless versions of each epoch — hope you can visualize those too when they are ready :)

Jackie Branc
@jackiebranc.com

Thanks, Josh! As well as Greebo, I collect other animals, and I’m experimenting with removing stars from images using StarNet, but it’s a tricky task as I want to preserve the scientific value of the image, so I can’t wait! :)

Josh Peek
@jegpeek.bsky.social

Yeah, we are using a sequence of techniques to deal with different contaminants, including cloudcover-like methods developed by andrew saydjari and bespoke approaches by dennis hartmann.