bringing back the night sky: lighting in toronto parks
DESCRIPTION
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 - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/1.jpg)
Bringing back the Night Sky:
Lighting In Toronto Parks
Peter Hiscocks, RASC12 August 2010
![Page 2: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/2.jpg)
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
![Page 3: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/3.jpg)
The Great Blackout, August 2003
Photo credit Todd Carlson, Goodwood ON Photo credit Todd Carlson, Goodwood ON
![Page 4: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/4.jpg)
Light Pollution Map
![Page 5: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/5.jpg)
Toronto at Night
![Page 6: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/6.jpg)
Skyglow over Calgary
![Page 7: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/7.jpg)
What can you see?
![Page 8: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/8.jpg)
Solar Observing
![Page 9: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/9.jpg)
Active Sun
![Page 10: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/10.jpg)
Evening Observing
![Page 11: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/11.jpg)
![Page 12: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/12.jpg)
![Page 13: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/13.jpg)
![Page 14: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/14.jpg)
Toronto parks are an excellent venue for viewing the night sky.
Accessible by the public, safe, good sight lines....
![Page 15: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/15.jpg)
...except for the problem of obtrusive light and glare
![Page 16: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/16.jpg)
Lighting Issues
Glare from unshielded fixtures: Top-Hat and Wall-Pack
Unattended and unshielded sports lighting
Car headlights
![Page 17: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/17.jpg)
Withrow Park Soccer Field
![Page 18: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/18.jpg)
Withrow Park Soccer Field
![Page 19: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/19.jpg)
'Top Hat' Light Standard
![Page 20: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/20.jpg)
Top Hat Light Standard
![Page 21: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/21.jpg)
Withrow Park Glare Problem
![Page 22: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/22.jpg)
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.
![Page 23: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/23.jpg)
Solution
Full-cutoff fixture that directs light downward
![Page 24: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/24.jpg)
Boardwalk Lamp
![Page 25: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/25.jpg)
Boardwalk Lamp Coverage
![Page 26: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/26.jpg)
![Page 27: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/27.jpg)
![Page 28: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/28.jpg)
Wall Pack Problem Light
![Page 29: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/29.jpg)
Wall-Pack Problem Light
![Page 30: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/30.jpg)
Wall-Pack Problem Light
![Page 31: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/31.jpg)
Wall-Pack Problem Light
![Page 32: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/32.jpg)
Colonel Samuel Smith Park
![Page 33: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/33.jpg)
Colonel Samuel Smith Park
![Page 34: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/34.jpg)
Full Cut-off Illuminators of the Night
Energy efficient too!Energy efficient too!
![Page 35: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/35.jpg)
Unattended/Unshielded Sports Lighting
![Page 36: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/36.jpg)
Withrow Park Skating Rink
![Page 37: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/37.jpg)
Rink Night Shot: No People
![Page 38: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/38.jpg)
Rink Night Shot
![Page 39: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/39.jpg)
Beach Pool Lighting
![Page 40: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/40.jpg)
Beach Pool Fixture Closeup
![Page 41: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/41.jpg)
Beach Pool Lighting
![Page 42: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/42.jpg)
Chicago Study on Lighting and Crime
![Page 43: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/43.jpg)
Recommendations
![Page 44: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/44.jpg)
![Page 45: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/45.jpg)
High Park Proposed Viewing Site
![Page 46: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/46.jpg)
High Park Baseball Diamond
![Page 47: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/47.jpg)
High Park Baseball Diamond
![Page 48: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/48.jpg)
High Park Recommendations
Control baseball lighting with vegetation barrier
Add shielding to Tennis Court lights
Replace Wall-Packs with cutoff fixtures
High Park Recommendations
![Page 49: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/49.jpg)
![Page 50: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/50.jpg)
Withrow Park Viewing Sites
![Page 51: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/51.jpg)
Withrow Park Recommendations
Replace 'Top-Hat' fixtures with full-cutoff
Extinguish arena lamps when not being used
![Page 52: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/52.jpg)
![Page 53: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/53.jpg)
Marie-Curtis Viewing Site
![Page 54: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/54.jpg)
Marie-Curtis Recommendations
Replace 'Top-Hat' fixtures with full-cutoff
Berm or foliage between parking lot and observing site
Avoid Wall-Packs in building resdesigns
![Page 55: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/55.jpg)
Overview and Summary
Park lighting is a mix: some effective, some problematic
Energy efficiency and light pollution can be reduced with modified or new fixtures
With minor fixes, parks could become much more hospitable to public sky observing activities
![Page 56: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/56.jpg)
The Payoff
Hundreds of Torontonians get an introduction to the night sky.
Parks and Rec credited for first 'Urban sky park' areas in North America.
Aligns with Parks Canada, 12 dark sky preserves
![Page 57: Bringing back the Night Sky: Lighting In Toronto Parks](https://reader035.vdocuments.mx/reader035/viewer/2022070409/5681448c550346895db12695/html5/thumbnails/57.jpg)