Switching streetlights off late at night, or not...

[Mike]

Not sure how accurate that app would be when it could only measure light levels and not temperature (IR) as in the SQM which uses an MXL90614 IR sensor.

[Fay]

they would have to turn them off early here as I am in bed by 10 imaging or not!!!

[RobertM]

they would have to turn them off early here as I am in bed by 10 imaging or not!!!

Lightweight

[MarkS]

Friday night I got a chance to take some measurements.  There was no difference in Sky Quality after 1pm - which was exactly the case at the New Romney DSC.  The orange glow from Maidstone and Ashford did not reduce.  I suspect that Maidstone and Ashford are still waiting for the scheme to roll out.   At least I hope that's the case.  Otherwise it means that the streetlighting concerned is only a tiny part of the overall light pollution problem.

Mark

[mickw]

Otherwise it means that the streetlighting concerned is only a tiny part of the overall light pollution problem

It's all those bleedin stars that won't go out - what we need is more clouds 

There are complaints about the lights being turned of making grannies feel insecure - I wonder if they sleep with their eyes open 

[Fay]

A lot could be all the lights left on in shopping centres and office blocks

[RobertM]

Ah, you must mean Tescos and Canary Wharf 

[Fay]

exactly!

[MarkH]

Has the  " blue dome" never been discussed on the forum before ?

[MarkS]

Has the  " blue dome" never been discussed on the forum before ?

Blue dome?

[MarkH]

Yes look north during darkness during late may, June and early July and you'll notice a blue dome in the sky up to about 25° from the sun illuminating the sky from the other side of the planet.

[Rick]

When the Sun doesn't get far enough below the horizon to stop it illuminating the highest reaches of the atmosphere even at midnight? Look for definitions of twilight (and "Astronomical Twilight" in particular). If you can detect the difference between the later stages of astronomical twilight and full night then you've got a seriously dark sky.

[Ivor]

Just arrived on my road

[MarkS]

The sign looks a bit dark.  Didn't they think to illuminate it?

[Ivor]

fortunately not