Orpington Astronomical Society

Astronomy => Astrophotography => Topic started by: JohnP on Jun 06, 2015, 23:06:53

Title: Jupiter & Venus along the roof top...
Post by: JohnP on Jun 06, 2015, 23:06:53
A couple of quickly taken hand holds from last night..Don't you just love those 'ultra' bright LED lights... :-(

(http://jpastronomy.co.uk/graphics/OAS/6074_Jupiter_Venus.jpg)

(http://jpastronomy.co.uk/graphics/OAS/6075_Jupiter_Venus.jpg)
Title: Re: Jupiter & Venus along the roof top...
Post by: doug on Jun 07, 2015, 08:20:14
Very nice images, John. Personally I don`t mind the white LED lights, they are an improvement on the sodium yellow lighting that we had. Did you notice the long band of cloud that remained in the sky for ages? It was really long; must have been twenty or more miles long.

Keep up the good work.

Doug.
Title: Re: Jupiter & Venus along the roof top...
Post by: Kenny on Jun 07, 2015, 08:41:07
Lovely sky. I prefer the street / led part cropped out.
Title: Re: Jupiter & Venus along the roof top...
Post by: Mike on Jun 07, 2015, 08:47:26
Quote from: doug on Jun 07, 2015, 08:20:14
Very nice images, John. Personally I don`t mind the white LED lights, they are an improvement on the sodium yellow lighting that we had.

The imagers will disagree. They are broadband spectrum whereas the sodium lighting was narrowband. Means filtering out the LED lights will be much harder. Hopefully they will all be shielded properly.
Title: Re: Jupiter & Venus along the roof top...
Post by: Kenny on Jun 07, 2015, 08:55:08
Quote from: Mike on Jun 07, 2015, 08:47:26
Hopefully they will all be shielded properly.

Unlikely. They didn't shield properly on my street despite me complaining. The lights also seem much brighter and could do with turning down a bit.
Title: Re: Jupiter & Venus along the roof top...
Post by: Rick on Jun 07, 2015, 09:28:04
Yeah, the LED ones seem less well directed than the newer sodium ones were, and they're often way too bright, especially along the main roads.
Title: Re: Jupiter & Venus along the roof top...
Post by: JohnP on Jun 07, 2015, 09:35:04
must admit it does look like the whole tree's light up... never noticed that with the Na... :-(
Title: Re: Jupiter & Venus along the roof top...
Post by: RobertM on Jun 07, 2015, 13:50:58
I think they put the same exactly the same LED lights up whether it's a main road or alley without any thought to what's actually required.  I got the council to dim and shield those nearby but even so we still got blackout curtains.  Can you imagine what the sky will be like on a snowy night :(
Title: Re: Jupiter & Venus along the roof top...
Post by: MarkS on Jun 07, 2015, 15:11:11
LED lighting also has a strong blue component.  Blue light scatters much more than red so there is probably a lot of blue light being scattered upwards.

It is also claimed that the blue light has various nefarious effects on wildlife.  On humans too, actually - upsetting sleep patterns.

Mark
Title: Re: Jupiter & Venus along the roof top...
Post by: Fay on Jun 07, 2015, 21:26:30
Nice pictures John, but always something against us!