Nick's APS Halloween Puzzle

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Across
  1. 2. width of a vampire's canine?
  2. 5. environmentally friendly Wiccan's UTC+0?
  3. 7. spider's favorite telescope that has been delayed for years?
  4. 8. stereotypical astronomy candy A
  5. 9. Witch's favorite number system?
  6. 11. candy vs pencils/raisins/stickers, to a tricker treater?
  7. 14. what results if an assassin occasionally puts toxins in the wrong glass according to lambda^k e^-lambda / k!
  8. 17. the hottest class of stars, if it had full moon problems?
  9. 18. the only way to see distant space vampires
  10. 20. stereotypical astronomy candy B
  11. 21. Instrument to separate phantoms by color?
  12. 23. Spooky time; reject if civil or nautical
  13. 24. Astronomy's scariest coordinate?
  14. 25. Who Satan sends if you misspell the 'to'
Down
  1. 1. sleepy, or happy, or sneezy, or Doc, etc.
  2. 3. Product of a grating's hauntingly bad ruling errors?
  3. 4. What a mummy might leave behind if it static shocks your CCD mid-exposure
  4. 6. T-800 or lunar photon break
  5. 10. Zombie's snack or planet's edge
  6. 12. space traveling psychic?
  7. 13. secondary support structure. Hubble's has only four 'legs'
  8. 15. Process through which an exoplanet delms into the supernatural
  9. 16. critical garment for a handmaid's tale costume?
  10. 19. Astronomy's spookiest radio telescope?
  11. 22. Astronomy's most frightening statistic?