Jason Nishiyama is a user on octodon.social. You can follow them or interact with them if you have an account anywhere in the fediverse.
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The colours on this image of the Horsehead aren't what the eye would see if it could. It maps the blue of the [OIII] line as blue, the red of the H alpha line as green and the red of the [SII] line as red. So the colours show were those elements are. https://octodon.social/media/briSNYTgksiTI3b3K9I
