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SN2021J has now faded to mag 15.5 (ZTF g) and its close proximity to the bright galaxy core makes taking a spectrum an interesting challenge. By subtracting the galaxy contamination though using a historic spectrum, it was possible to tease out the spectrum of the supernova.
https://britastro.org/observations/observation.php?id=20210330_102737_ce02a117cb2c0df5
Cheers
Robin
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