Sister blog of Physicists of the Caribbean. Shorter, more focused posts specialising in astronomy and data visualisation.

Sunday 28 February 2016

Colour-corrected galaxies.


Colour-corrected galaxies selected from the ALFALFA HI catalogue, shown using SDSS optical data. The over-yellowness turned out to be because of changes in the way the SDSS assign colours and wasn't anything I'd done wrong. The new SDSS data fixes some artifacts but I preferred the old colour scheme. Easy enough to fix though !

The 3D version is looking nice, but I need to play with the camera offsets to get the best balance between a sense of depth and making my eyes go funny because of the multiple images.
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