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There are occaisons when you are observing and no option but to live with light trespass. Here are some ways to work around the issue:
- In same cases a Light Pollution filter will dramatically help with Mercury or Sodium lights (ie most street and porch lights)
- Use a sheild (simple piece of cardboard will work until the dew settles in) on the open end of your telescope. If you have a truss scope ensure you have the shrowd installed. Short term you could use a sheet or blanket.
- Have an observing partner stand beside you to help bock the light from entering the eye piece
- Ask the neibours to turn the lights down or off for the one night
- Use rope and a tarp to erect a temporary wall to block the offending light
- Plant evergreen shrubs (year round protection) between yourself and your neibour for long term observing locations - tall enough for the light but not to tall to block your views!
- Drive to a darker site
- Contact your local power supply company (ie NBPower). There are shields available for dusk to dawn lights, (and black spray paint). But a cobra head is different, there will probably be traffic/pedestrian visibility issues. If it is located near a stream or wetland you have a valid complaint, and action should be taken.
- Pamplet available for download from Earth Day 2008 with additional information regarding light pollution
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