Search results

  • Users: goleafsgo113
  • In Introductory Physics Homework Help
  • Content: Threads, Posts
  • Order by date
  1. G

    Astronomy problem

    ok the question is, Calculate the photons you expect to receive per Angstrom at the focus of a Cassegrain telescope of aperture 30cm for a star of V magnitude 9.0, observed at a zenith distance of 60 degrees. Assume extinction coefficient of 0.15 magnitudes per airmass, reflectivity at each...