List of objects

  1. A star with 15 < g < 18
  2. A very bright star with g < 12
  3. A face-on spiral galaxy
  4. An edge-on spiral galaxy
  5. An elliptical galaxy
  6. An irregular galaxy
  7. A galaxy with a spectrum
  8. An asteroid that shows up as a blue-yellow dot
  9. A “Ghost”
  10. A meteor
  11. A very faint star with g > 21
  12. A very red star with r-z > 1.5
  13. A star cluster
  14. A galaxy cluster A quasar (hint: look for a red star, then look at its spectrum in the Object Explorer)
  15. A pair of interacting galaxies
  16. A very blue galaxy with g-r < 0
  17. The object with the largest i-z value (the reddest object) you can find!