Old 09-05-2010, 09:48 AM #1
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Default 445nm + astrophotography fun







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Old 09-05-2010, 09:57 AM #2
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Default Re: 445nm + astrophotography fun

How long was the exposure in the first picture? It turned out great even with all the light pollution.
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Old 09-05-2010, 09:59 AM #3
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Default Re: 445nm + astrophotography fun

30 seconds, f4, 12mm, ISO 1600
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Old 09-05-2010, 11:13 AM #4
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Default Re: 445nm + astrophotography fun

The first pic is great, especially with the milky way in it
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Old 09-05-2010, 11:40 PM #5
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Default Re: 445nm + astrophotography fun

Love the first pic! Awesome shot.
We should really make a photo contest on LPF
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Old 09-06-2010, 02:10 AM #6
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Default Re: 445nm + astrophotography fun

I love seeing the milky way - for me thats a total holiday experience since light pollution is so bad here in the netherlands, you never see it anymore. When you get to the desert in the middle east at night its just great to observe - you see so much more even with the naked eye when in total darkness
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Old 09-06-2010, 02:20 AM #7
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Default Re: 445nm + astrophotography fun

Light Pollution SUCKS!!
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Old 09-06-2010, 02:28 AM #8
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Default Re: 445nm + astrophotography fun

Well, not really. I do like highways lighted so well your headlights function only as markers to other drivers, and are not required to illumnate the road to see where you are going.

Its obviously a trade off, but as far as holland is concerned, the light pollution adds so much to traffic safety the downside is entirely acceptable. Real darkness is great for peering at the sky, but i dont think its worth getting people killed over.

Shutting down road illumination after midnight or so has been proposed, but it would result in the loss of dozens of lives annually if executed... in my book thats a good argument to leave things as they are!
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Old 09-06-2010, 02:47 AM #9
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Default Re: 445nm + astrophotography fun

^^^ Valid Points^^^

My folks live way out in the boondocks, and it's really Dark. I love going to the Desert and viewing the sky at night. Around Dallas it's never dark at night, so much city light spills over, You never see many stars.
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Old 09-06-2010, 03:02 AM #10
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Default Re: 445nm + astrophotography fun

This site is about 1 hr north west of Ft Worth and it stills suffers from light pollution ... Decatur to the south and Gainesville to the north east.
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Old 09-06-2010, 03:10 AM #11
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Default Re: 445nm + astrophotography fun

Yep You have to drive a few hours off the beaten path up in this part of the state to get away from it.
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Old 09-06-2010, 07:36 AM #12
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Default Re: 445nm + astrophotography fun

what kind of camera did you use? Great shots man..
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Old 09-06-2010, 07:42 AM #13
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Default Re: 445nm + astrophotography fun

Use some NVGs if you want to see a LOT of stars. The only thing bad is that they are all green. I got to mess with some top of the line NVGs used by military pilots. I've always wanted some but now I want a pair even more.

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30 seconds, f4, 12mm, ISO 1600
Thanks. 12mm is pretty wide. I have th 10-22mm Canon lens. 10 comes out to about 16 though after the conversion. I'd like to have one the higher end SLRs with a full frame. They are more than what I want to pay right now though.
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Old 09-06-2010, 07:46 AM #14
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Default Re: 445nm + astrophotography fun

Quote:
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what kind of camera did you use? Great shots man..
Its a Nikon D90, Tokina 11-16mm f2.8 lens for the first pic and a cheapo Sigma 70-300 for the other two.
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Old 09-06-2010, 12:46 PM #15
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Default Re: 445nm + astrophotography fun

I guess you can filter out a lot of the light pollution, but it depends on the source.

Here, a lot of it is caused by road lighting, which are mostly low-pressure sodium lamps that give a very narrow spectral output in the orange. If you install a filter that blocks that wavelength it would improve photography results.

Sometimes light pollution gets crazy though... there are some greenhouses not to far from a highway i drive from time to time, and at night you can sometimes see the spill lighting up the clouds. First time i saw that i figured something was on fire
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Old 09-06-2010, 02:36 PM #16
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Default Re: 445nm + astrophotography fun

Quote:
Originally Posted by Benm View Post
I guess you can filter out a lot of the light pollution, but it depends on the source.

Here, a lot of it is caused by road lighting, which are mostly low-pressure sodium lamps that give a very narrow spectral output in the orange. If you install a filter that blocks that wavelength it would improve photography results.

Sometimes light pollution gets crazy though... there are some greenhouses not to far from a highway i drive from time to time, and at night you can sometimes see the spill lighting up the clouds. First time i saw that i figured something was on fire
There are some sports fields near here that have a similar effect. Nothing but a yellow/orange hazy glow when I look up at night here in the city
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