Representing the "butterfly" projection in FITS - projection code XPH
Mark R. CalabrettaStuart R. Lowe
所有作者
Mark R. CalabrettaStuart R. Lowe
文献摘要
The “butterfly” projection is constructed as the polar layout of the HEALPix
projection with (H,K) = (4,3). This short article formalises its representation
in FITS.