Photos From Space Show LEDs increasing Light pollution

Discuss the greatest threat to amateur astronomy today

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Brian
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Photos From Space Show LEDs increasing Light pollution

Post by Brian »

https://uk.news.yahoo.com/astronauts-ph ... ml#M7EeQE1

From orbit maybe but isn't this contrary to findings at ground level?
Brian
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David Frydman
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Re: Photos From Space Show LEDs increasing Light pollution

Post by David Frydman »

. Hi Brian,
. This effect is well known. If you look up the campaign for dark skies of the British astronomical Association you will probably find this described.

I recall that the figure of maybe five times more reflected light because of LEDs.
There may be directionally better at street level.

These LEDs even when they're corrected to so-called white light have completely the wrong spectrum.
They are harmful to both human and and animal health.

People have gone headlong into using these LEDs without thinking about the consequences.
And of course China spews out millions, perhaps billions of LEDs.

People only think about pounds shillings and pence and not about consequences.

One way or another things are not looking good.

However, I have to remain personally positive and hope eventually common sense will prevail.
But we are now going on to 8,000,000,000 humans, whereas the Earth can only support maybe 2 billion or 3 billion at most.

People talk about terraforming Mars. We cannot even look after our own planet.

Some people think that technology will get us out of our madness. We shall see.

The last few hours, my computer just went completely haywire. There were severe thunderstorms and flooding all over southern England.
Apparently, I now have a different identifying address. Where this came from I have no idea, nor does my computer specialist know. They're sending me a new router. Amazingly, I've managed to reconnect to my new personality or address. I don't know who I am any more or at least the computer does not know. I started cursing computers, but my specialist says that it is only technology. The same as telescopes and cameras. He knows what he's doing I don't. Somehow over the telephone from abroad I managed to get the new address working, even though I've no idea where it comes from.

Anyway I will probably calm down in an hour or so after this mad evening. I absolutely hate computers.

All the best,
Regards, David
Last edited by David Frydman on Thu Aug 27, 2015 2:27 pm, edited 1 time in total.

David Frydman
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Re: Photos From Space Show LEDs increasing Light pollution

Post by David Frydman »

I just got this from my helper a long way away.

David knows his telescopes
and his brain is in the sky
L knows his networks
and his brain is on the line

Wish you well

. We have both spent about half a century on our interests.
My telescopes, his computers.

The problem is that I don't have the resources to cope with these machines. But luckily I have two very experienced helpers. One is actually in Australia. Without them I wouldn't even be using computers.

Regards, David

brian livesey
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Re: Photos From Space Show LEDs increasing Light pollution

Post by brian livesey »

Without your computer David, we wouldn't have the pleasure of your acquaintance. Keep up the good work. :wink:
brian

Brian
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Re: Photos From Space Show LEDs increasing Light pollution

Post by Brian »

David wrote

"However, I have to remain personally positive and hope eventually common sense will prevail.
But we are now going on to 8,000,000,000 humans, whereas the Earth can only support maybe 2 billion or 3 billion at most.

People talk about terraforming Mars. We cannot even look after our own planet.

Some people think that technology will get us out of our madness. We shall see."

I tend to agree David. I came across this today and think it's not without substance:

http://www.afternoongossip.com/its-time ... worried/1/

I don't doubt that Mother earth will eventually shrug us off - a million years isn't long on her scale of things
Brian
52.3N 0.6W
Wellingborough UK.

254mm LX90 on Superwedge, WO ZS66SD, Helios 102mm f5 on EQ1, Hunter 11x80, Pentax 10x50
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mike a feist
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Re: Photos From Space Show LEDs increasing Light pollution

Post by mike a feist »

When has common-sense ever prevailed? Too many people, too many conflicting beliefs, some pretty appalling mindlessness - you only have to turn on the television and watch a few random programmes with their childish advertisements! Sorry if I sound a bit grumpy today - grey skies tend to make me rather depressed!! regards maf

Cliff
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Re: Photos From Space Show LEDs increasing Light pollution

Post by Cliff »

Dear Brian & Mike
I totally agree; as far as I'm concerned, there is a World population crisis (re humans that is). In fact I tried to say as much a few years ago in a letter published in PA - which didn't go down very well with certain people. Ironically in my letter I said that the World's population had increased two fold since I was born. In fact I think it had increased THREE FOLD but I did not want to be accused of exaggeration.
Ironically not long before that I'd read that the World human population could all fit on the Isle of Man. I found that hard to believe but then made a simple estimate myself, which suggested providing everyone stood up-right the World population of Seven Billion (I think I took the number to be) could actually be accommodated on the IoM - but of course people would be crammed together and could not lie down !!
Just recently I decided to guestimate how long "humans" might survive on Earth.
How about ONE THOUSAND YEARS, plus the odd million (if they're really lucky) OR minus 885 years.
If anyone thinks that migrating to an exo-planet or whatever is the answer - they might need to do it fairly SOON, or they'll be too late.
Best wishes from Cliff
PS - I think BBC TV News said the other day that there are going to be another 16 wind turbines on the South Pennine Moors near Rochdale !!

brian livesey
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Re: Photos From Space Show LEDs increasing Light pollution

Post by brian livesey »

Stop worrying chaps about so-called over population. The whole of humanity would fit on the island of Zanzibar and with the same urban density as Manhatten.
What needs to be done is to establish a one-way Mars colony for the politicians, then we can breath easy. :lol:
brian

David Frydman
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Re: Photos From Space Show LEDs increasing Light pollution

Post by David Frydman »

. The problem with putting all of humanity on the island of Zanzibar is that the only thing they would have to eat would be each other.

This of course would reduce the population to a sensible level. :-)

Regards, David

Brian
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Re: Photos From Space Show LEDs increasing Light pollution

Post by Brian »

Just in from Sky and Telescope:

ISS Photos Yield “Cities at Night” World Map

http://www.skyandtelescope.com/astronom ... -09052015/

Interesting if depressing images?
Brian
52.3N 0.6W
Wellingborough UK.

254mm LX90 on Superwedge, WO ZS66SD, Helios 102mm f5 on EQ1, Hunter 11x80, Pentax 10x50
ASI120MC Toucam Pros 740k/840k/900nc mono, Pentax K110D
Ro-Ro roof shed

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