在python中如何将RADec坐标转换为银河系坐标

Question

我在Python中将像素坐标fits文件转换为世界坐标。标题显示此fits文件位于RA-Dec坐标系中。我想把它转换成银河系的坐标。这是我尝试过的。在

from astropy import coordinates as coord
from astropy import units as u
c=coord.icrscoord(ra=wx,dec=wy,unit=(u.degree,u.degree))
c.galactic

AttributeError: 'module' object has no attribute 'icrscoord'

这不起作用。有什么建议吗？在

Answer 1

根据Astropy documentation，语法是：

from astropy import units as u
from astropy.coordinates import SkyCoord
c = SkyCoord(ra=wx*u.degree, dec=wy*u.degree, frame='icrs')
c.galactic