Street Light Solution?

10 years 9 months ago #79092 by Thargor
Street Light Solution? was created by Thargor


Anyone got a green laser pointer to try it? Doesnt say how long it lasts though.

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10 years 9 months ago #79093 by DaveGrennan
Replied by DaveGrennan on topic Re:Street Light Solution?
Folks,

Much as I hate light pollution, like everyone else, I urge extreme caution here.

Doing this is very likely illegal and could get you into a world of trouble if caught! Especially so with the recent focus on green lasers by the authorities.

Careful now!

Regards and Clear Skies,

Dave.
J41 - Raheny Observatory.
www.webtreatz.com
Equipment List here

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10 years 9 months ago #79094 by Derek Davey
Replied by Derek Davey on topic Re:Street Light Solution?
:) :) :) :) ;)

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10 years 9 months ago #79096 by Keith g
Replied by Keith g on topic Re:Street Light Solution?
:)

If a telescope can fit into your backyard it's too small. If you can't move it, it's too big." -- John Dobson

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10 years 9 months ago #79097 by dave_lillis
Replied by dave_lillis on topic Re:Street Light Solution?
Your neightbours might not appreciate your ingenuity and as Dave says you could get alot of grief over this, does this light illuminate other houses nearby or are you in an isolated location ?

Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)

Carrying around my 20" obsession is going to kill me,
but what a way to go. :)
+ 12"LX200, MK67, Meade2045, 4"refractor

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10 years 9 months ago #79098 by michaeloconnell
Replied by michaeloconnell on topic Re:Street Light Solution?
Dont you try it anyway dave with your laser or the street light will go up in smoke :-)

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10 years 9 months ago - 10 years 9 months ago #79099 by dave_lillis
Replied by dave_lillis on topic Re:Street Light Solution?
Michael, I have a 75mW laser and I'm gong to try it tonight. :evil:
BUT, would you not have to be continuously pointing the laser at it for it to stay off, as soon as you stop would it not come back on.? :ohmy:
Turning off a few lights isnt going to reduce my light pollution issues, I'm doing this as an experiment, there is no chance of damaging the light.

Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)

Carrying around my 20" obsession is going to kill me,
but what a way to go. :)
+ 12"LX200, MK67, Meade2045, 4"refractor

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10 years 9 months ago #79100 by Derek Davey
Replied by Derek Davey on topic Re:Street Light Solution?
ok the beam knocks off the light but how, what is actually happening?

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10 years 9 months ago - 10 years 9 months ago #79101 by dave_lillis
Replied by dave_lillis on topic Re:Street Light Solution?
There is a light detection sensor at the top of the light, it detects if its daytime or nighttime, it turns on the light during low light levels, the trick is to fool the sensor into thinking its daytime. Lasers are intensly bright and can do this, I dont think any damage is possible.

Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)

Carrying around my 20" obsession is going to kill me,
but what a way to go. :)
+ 12"LX200, MK67, Meade2045, 4"refractor

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10 years 9 months ago - 10 years 9 months ago #79103 by dave_lillis
Replied by dave_lillis on topic Re:Street Light Solution?
I tried and failed, I could not get the light to go off, trying to aim the laser right on the sensor is difficult.

Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)

Carrying around my 20" obsession is going to kill me,
but what a way to go. :)
+ 12"LX200, MK67, Meade2045, 4"refractor

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10 years 9 months ago #79108 by Seanie_Morris
Replied by Seanie_Morris on topic Re:Street Light Solution?
Dave_Lillis wrote:

There is a light detection sensor at the top of the light


I think its a simple Light Dependent Resistor - when theres a certain amount of photons falling on the resister, they block the flow of electricity. When they fall below a certain level, electricity is allowed to pass. Very simple device.

If it doesn't work with your own nearby streetlight, they probably have a new version to combat extra-stray light sources i.e. your green laser would have to come down from (almost directly) above.

Seanie.

Midlands Astronomy Club.
Radio Presenter (Midlands 103), Space Enthusiast, Astronomy Outreach Co-ordinator.
Former IFAS Chairperson and Secretary.

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10 years 9 months ago #79111 by dave_lillis
Replied by dave_lillis on topic Re:Street Light Solution?
Seanie_Morris wrote:

If it doesn't work with your own nearby streetlight, they probably have a new version to combat extra-stray light sources i.e. your green laser would have to come down from (almost directly) above.
Seanie.

yea, thats what I was thinking aswell.:(

Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)

Carrying around my 20" obsession is going to kill me,
but what a way to go. :)
+ 12"LX200, MK67, Meade2045, 4"refractor

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