English: Visible light image of Luhman 16 (smaller version, centered).

Image Credit: ESO VLT MUSE (program id: 60.A-9305)

Link program: http://archive.eso.org/wdb/wdb/eso/sched_rep_arc/query?progid=60.A-9305

Image was created with the software QFitsView and Phtotoshop Elements https://www.mpe.mpg.de/~ott/QFitsView/index.html

Image Creation:

I did first create red, green and blue images from the MUSE cube.

I did choose wavelengths that closely match colors of the visible spectrum:

blue: 475 - 500 nm

green: 485 - 625 nm

red: 565 - 750 nm

I intentionally did choose wavelength ranges to overlap with each other. For example: blue ends with the wavelength of cyan (500 nm), while green begins with the wavelength of cyan (485 nm).

Blue however begins at 475 nm, because MUSE cannot observe at shorter wavelengths (violet and short wavelengths of blue).

table spectral colors on wikipedia: https://en.wikipedia.org/wiki/Visible_spectrum#Spectral_colors

This image is in agreement with previous works that called brown dwarfs violet: https://iopscience.iop.org/article/10.3847/2515-5172/ac225c