Winter and Spring sky constellations

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Across
  1. 4. the Giant Huntsman
  2. 5. the Chariot Man
  3. 10. M45
  4. 11. Beta star of Orion
  5. 13. Alpha star of Ursa Minor
  6. 15. the Twins
  7. 16. ____ nebula (M1)
  8. 17. Alpha star of Leo
  9. 18. Beta star of Gemini
  10. 20. Alpha star of Bootes
  11. 22. the Lion
  12. 25. the hull
  13. 26. Alpha star of Carina
  14. 28. ____ Centauri cluster (C80)
  15. 29. Alpha star of Virgo
  16. 30. ____ nebula (C49)
Down
  1. 1. Beta star of Centaurus
  2. 2. the Unicorn
  3. 3. ____ galaxy (M104)
  4. 6. Alpha star of Taurus
  5. 7. Winter ____ (145 CMa)
  6. 8. the Crab
  7. 9. ____ cluster (M44)
  8. 12. the Bull
  9. 14. the Maiden
  10. 16. the Southern Cross
  11. 18. Alpha star of Canis Minor
  12. 19. the Centaur
  13. 21. Alpha star of Canis Major
  14. 23. a pattern of stars that is not a constellation
  15. 24. Beta star of Crux
  16. 27. ____ Velorum cluster (C85)