How do I find stars within milky way using galactic latitude and longitude I have data that contains galactic latitude and longitude of stars. I have to determine all the stars that are within our milky way. How do I find it?
Stars beyond our own galaxy and its immediate neighbors are indistinct without a large telescope, so I assume the question is about the band across the sky, rich with faint stars.

The Milky Way's boundary is fuzzy, so its extent is expressed in terms of isophotes: lines of constant brightness per unit solid angle (e.g. square degree).
It is wider near the central bulge (galactic longitudes around 0&deg; or 360&deg;) than away from it (around 180&deg;).
Most stars within galactic latitudes &plusmn;10&deg; are in the Milky Way; most outside &plusmn;15&deg; are not.
At galactic latitudes in between, galactic longitude and the choice of isophote determine whether a star is in or out.