- #1
nmsurobert
- 288
- 36
I just an read article on the ESAs Gaia program. I was wondering how they count the 1.7 billion stars in the image? Are the stars cataloged as the images are taken? Or is there a method that is used after the images have been collected?
http://sci.esa.int/gaia/60169-gaia-s-sky-in-colour/
http://sci.esa.int/gaia/60169-gaia-s-sky-in-colour/