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Bringing back the Night Sky: Lighting In Toronto Parks

Bringing back the Night Sky: Lighting In Toronto Parks. Peter Hiscocks, RASC 12 August 2010. The Royal Astronomical Society of Canada (RASC) ‏ Mandate: to stimulate interest and increase knowledge in astronomy 29 Centres across Canada 4000 members, 700 in the Toronto Centre

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Bringing back the Night Sky: Lighting In Toronto Parks

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  1. Bringing back the Night Sky: Lighting In Toronto Parks Peter Hiscocks, RASC 12 August 2010

  2. The Royal Astronomical Society of Canada (RASC)‏ • Mandate: to stimulate interest and increase knowledge in astronomy • 29 Centres across Canada • 4000 members, 700 in the Toronto Centre • 2 Meetings per month, 2 sky observing sessions, activities at the David Dunlap Observatory

  3. The Great Blackout, August 2003 Photo credit Todd Carlson, Goodwood ON Photo credit Todd Carlson, Goodwood ON

  4. Light Pollution Map

  5. Toronto at Night

  6. Skyglow over Calgary

  7. What can you see?

  8. Solar Observing

  9. Active Sun

  10. Evening Observing

  11. Toronto parks are an excellent venue for viewing the night sky.Accessible by the public, safe, good sight lines....

  12. ...except for the problem of obtrusive light and glare

  13. Lighting Issues Glare from unshielded fixtures: Top-Hat and Wall-PackUnattended and unshielded sports lightingCar headlights

  14. Withrow Park Soccer Field

  15. Withrow Park Soccer Field

  16. 'Top Hat' Light Standard

  17. Top Hat Light Standard

  18. Withrow Park Glare Problem

  19. Defining Glare Glare: contrast lowering effect of stray light in a visual scene. Glare forms a veil of luminance which reduces the contrast and thus decreases the visibility of a target. We cannot see intensity differences efficiently in the presence of a high background of light intensity. The sensitivity to glare is amplified with age as scattering in cornea or lens increases.

  20. SolutionFull-cutoff fixture that directs light downward

  21. Boardwalk Lamp

  22. Boardwalk Lamp Coverage

  23. Wall Pack Problem Light

  24. Wall-Pack Problem Light

  25. Wall-Pack Problem Light

  26. Wall-Pack Problem Light

  27. Colonel Samuel Smith Park

  28. Colonel Samuel Smith Park

  29. Full Cut-off Illuminators of the Night Energy efficient too!

  30. Unattended/Unshielded Sports Lighting

  31. Withrow Park Skating Rink

  32. Rink Night Shot: No People

  33. Rink Night Shot

  34. Beach Pool Lighting

  35. Beach Pool Fixture Closeup

  36. Beach Pool Lighting

  37. Chicago Study on Lighting and Crime

  38. Recommendations

  39. High Park Proposed Viewing Site

  40. High Park Baseball Diamond

  41. High Park Baseball Diamond

  42. High Park Recommendations • Control baseball lighting with vegetation barrier • Add shielding to Tennis Court lights • Replace Wall-Packs with cutoff fixtures High Park Recommendations

  43. Withrow Park Viewing Sites

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