Stars above bryce2010

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  • Light Pollution. This is light we produce shining up to space. Why does this matter?
  • So here’s our bad light again. Replace it, or better yet, retrofit it…
  • So here’s our bad light again. Replace it, or better yet, retrofit it…
  • With a shade that comes all the way down to the bottom of the bulb, and the only light that come sout, goes to where it is needed. And better yet, get a shade with a reflective inner surface, and all the light that used to go to waste, now goes to useful purposes. The result, is that you get more light where you need it. In fact, since you now get more light than you originally have, you can replace your bulb with a lower wattage and thus save electicity, which saves energy, which saves you money. It is a win, win, win, win.
  • First, let’s take a look at your typical outdoor light fixture. We want outdoor lighting to make us safe. The light shining upward above the horizon, isn’t doing anything. It’s all waste. The light that shines horizontally is light that usually shines right into our eyes, it’s glare, and really isn’t doing much to keep us safe (in fact it can even hide the presence of something bad). The rest, the light shining down, that’s the productive light.
  • Here’s a bad light.
  • Here are some examples.
  • If you want information on how to install effective lighting, retrofit existing lighting, suggested manufactures of night-sky friendly lighting, check out the IDA. They can also help with information about light-pollution ordinaces.
  • Stars above bryce2010

    1. 1. Stars Above, Earth Below Adventures of an Astronomer in the National Parks Dr. Tyler Nordgren
    2. 2. Denali National Park Bryce Canyon National Park
    3. 3. Arches National Park
    4. 4. Chaco Culture National Historical Park
    5. 5. Glacier National Park
    6. 6. Bryce Canyon National Park
    7. 7. Bryce Canyon National Park
    8. 8. Bryce Canyon National Park
    9. 9. Arches National Park
    10. 10. Rocky Mountain National Park
    11. 11. Acadia National Park
    12. 14. Acadia National Park
    13. 15. Acadia National Park
    14. 16. Acadia National Park
    15. 17. Acadia National Park
    16. 18. Acadia National Park
    17. 19. Hubble Space Telescope – M51
    18. 20. Acadia National Park
    19. 21. NASA New Horizons
    20. 22. NASA/JPL Galileo
    21. 24. NASA/JPL Cassini
    22. 25. NASA/JPL Cassini
    23. 26. NASA/JPL Cassini
    24. 27. Yellowstone National Park
    25. 29. Chaco Culture National Historical Park
    26. 30. Chaco Culture National Historical Park
    27. 31. Night on Earth – ESA/Rosetta Spacecraft
    28. 32. Light Pollution
    29. 33. Chad Moore/NPS
    30. 34. Death Valley National Park – NPS Night Sky Team
    31. 35. Joshua Tree National Park – NPS Night Sky Team
    32. 36. Light Pollution
    33. 37. Who Cares? <ul><li>Loss of Natural Night affects biosphere: </li></ul><ul><ul><li>Nocturnal species (raptors, turtles, etc) </li></ul></ul><ul><ul><li>Humans </li></ul></ul><ul><li>Waste of electricity, money, resources. </li></ul>
    34. 38. Arches National Park
    35. 39. Light Pollution
    36. 40. Light Pollution
    37. 41. Direct Waste- 50% Glare- 10% Productive- 40%
    38. 43. McGraw Ranch – Rocky Mountain NP
    39. 44. Lake Yellowstone Hotel – Yellowstone NP Lake McDonald Lodge – Glacier NP
    40. 45. www.darksky.org
    41. 46. Natural Bridges National Monument – NPS Night Sky Team
    42. 47. Natural Bridges National Monument
    43. 48. Yosemite National Park
    44. 51. Thank you Available in Mach www.Planetary.org/Parks Stars Above, Earth Below On Sale Now

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