ism3d.arts.sparse.clouds_tosky¶

ism3d.arts.sparse.clouds_tosky(car, inc, pa, inplace=True)[source]¶

transform the cloudlet representation in galactic cartersian system to the on-sky cartersian system here: we assume:

sky-x align with RA (increase with RA) sky-y align with DEC (increase with DEC) sky-z align with LOC (away from observer)

therefore , dz in the sky system is