Is Orange Light a Better Colour than Red for Dark Adaptation?
Maintenance of dark adaptation is critical for visual astronomers. Where artificial lighting has been necessary, astronomers have traditionally used red lighting. However there are sound reasons to suggest that this may not be the optimal colour. This study revealed that orange is the most appropriate colour for lighting for most astronomers, but there was considerable variation.
Learn much more about this issue in, BAS member, Dr Ken Wishaw’s research paper – available here