As a former astronomer, this is correct. Even in extremely high resolution images each pixel contains many, many stars. This fact has actually been used to de

As a former astronomer, this is correct. Even in extremely high resolution images each pixel contains many, many stars. This fact has actually been used to determine the distances to galaxies. The basic idea is that if the galaxy is nearby, then there will be fewer stars per pixel (say, only a few dozen), but if the galaxy is very far away, there will be many thousands of stars per pixel. As a result, if the galaxy is nearby, there will be a lot of variation in brightness from pixel to pixel because the Poisson fluctuations are proportionally much larger. If the galaxy is more distant, the brightness at each pixel will be more homogenous. This is called the surface brightness fluctuation technique. There's a nice page about it here: https://ned.ipac.caltech.edu/level5/Jacoby/Jacoby9_1.html https://ned.ipac.caltech.edu/level5/Jacoby/Jacoby9_1.html