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| smegballs |
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 smegballs World Chat Champion
Joined: 28 Oct 2007 Karma :  
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 Posted: 23:06 - 20 Apr 2014 Post subject: Photographisers, a question |
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https://i.imgur.com/e3BFhur.jpg
Am I correct in thinking you can only get these lush milkway pics with a very long exposure? I've been to really remote places, and although the sky has a lot more visible, nothing on this scale. Maybe light pollution is really just that pervasive?
Ie, even if there was zero light pollution, you wouldn't be able to see such cool pics with the naked eye. Thus the pic (altho cool) is a load of bollocks. |
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| clancy |
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 clancy World Chat Champion

Joined: 11 Apr 2009 Karma :   
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| Lord Percy |
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 Lord Percy World Chat Champion

Joined: 03 Aug 2012 Karma :  
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 Posted: 23:39 - 20 Apr 2014 Post subject: |
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I think this is bullshit. When you're in an aeroplane you don't see such beautiful sights, even though you're quite a way up in the atmosphere and are often nowhere near zones of light pollution.
Your eyes will never see something like that anyway because of the layout of the rods and cones at the back. I don't know much about it, but the best way to explain it is - Look at a fairly starry night and you'll find that when you look directly at some stars they disappear, and you can only see them if you look a couple centimetres to one side. That's to do with the rods and cones in your eyes, and is a reason why we'll never be able to see the night sky as well as a proper telescope or camera with the correct exposure settings.
@Clancy - the only thing you truly need is a long exposure. High ISO can just make it grainy, and low f-stop just makes it harder to focus. The perfect photo would be with a super high f-stop and an uber long exposure, and if you wanna get super tech, set it up on a mechanical thing that moves precisely with the spin of the earth so everything stays in position. Then you could set your f-stop to crazy high to get absolutely everything in focus and have a shutter speed of a good half hour or so. It's just an 'intelligent guess' but I reckon that's what space telescopes probably do too.
Image of rods and cones here:
https://starizona.com/acb/ccd/advimages/eye01.gif
Rods are more sensitive but don't see in colour. So when you aren't looking directly at something, your rods still detect the light. Hence if you look directly at a star the cones fail, but if you look a bit away from it the rods detect it.
tl;dr - Human eyes will never be able to see something as epic as the photo suggests. At least not over those cities. Probably nowhere in the countryside either. (Probably). |
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| clancy |
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 clancy World Chat Champion

Joined: 11 Apr 2009 Karma :   
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 Posted: 23:51 - 20 Apr 2014 Post subject: |
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Yeah I high iso can, bit of trial and error really, equipment obviously makes a difference
And yeah that would be perfect but I don't have a crazy automated thing would be cool though
I agree I don't think it's possible to see with the naked eye at all ____________________ KLX 300r |
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| oldpink |
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 oldpink World Chat Champion

Joined: 02 Aug 2006 Karma :   
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| stinkwheel |
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 stinkwheel Bovine Proctologist

Joined: 12 Jul 2004 Karma :    
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 Posted: 00:11 - 21 Apr 2014 Post subject: |
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Wrong.
Go somewhere with a TRULY dark sky with no cloud on a new moon with and you will see skys exactly like that. So many stars you can't make out the constellations properly.
Last place I saw one that good was when I was camping on the Isle of Skye but I've seen them down Ardnamurchan too. ____________________ “Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles. |
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| oldpink |
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 oldpink World Chat Champion

Joined: 02 Aug 2006 Karma :   
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| oldpink |
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 oldpink World Chat Champion

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| Lord Percy |
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 Lord Percy World Chat Champion

Joined: 03 Aug 2012 Karma :  
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 Posted: 01:53 - 21 Apr 2014 Post subject: |
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Sheesh! Not all wrong. Just the bits about how starry a proper night sky can get. Best get myself away from the city lights for a while I think  |
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| slowlydoesit |
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 slowlydoesit Could Be A Chat Bot
Joined: 14 Oct 2012 Karma :   
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| weasley |
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 weasley World Chat Champion

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| Tungtvann |
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 Tungtvann World Chat Champion

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| The Wobbly Orange |
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 The Wobbly Orange Brolly Dolly
Joined: 16 Aug 2005 Karma :    
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| stinkwheel |
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 stinkwheel Bovine Proctologist

Joined: 12 Jul 2004 Karma :    
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 Posted: 11:19 - 21 Apr 2014 Post subject: |
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| weasley wrote: | Point for debate then... why do all the images from the moon landing show inky black 'skies' with little evidence of stars and such? Is it just due to short exposures not capturing any detail in the sky? Same for images of space walks from the shuttle etc. |
Because the exposure is set for the well lit moon or astronaut and not enough light will get in through the shutter from the stars for them to show up. If you exposed it to show the stars, the moon would be a white disc.
You get a similar problem in reverse when doing aviation photography. If you expose for aircraft detail, the sky is totally overexposed and white. If you expose for sky detail, the aircraft is underexposed and appears as a sillhouette. To get both showing properly takes a degree of jiggery-pokery (when I was doing it, it was done in the darkroom with didging and burning).
With modern digital photography, you could easily take two shots, one exposed for the moon and one exposed for the stars and superimpose one on the other. Or even mask off the moon and mess with the levels of the background. The stars are probably there, just not showing up. ____________________ “Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles. |
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| Lord Percy |
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 Lord Percy World Chat Champion

Joined: 03 Aug 2012 Karma :  
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 Posted: 13:10 - 21 Apr 2014 Post subject: |
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That was a mega interesting little read  |
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| orac |
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 orac World Chat Champion
Joined: 25 Sep 2011 Karma :   
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 Posted: 14:39 - 21 Apr 2014 Post subject: |
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https://farm8.staticflickr.com/7391/9988354116_6aee197e5c_b.jpg
Night ban Complete_edited-1 by f2268d215cc925918731918f4efa0289, on Flickr
this was taken on the 09/09/13 and 02:44 with a nikon d50 set to iso 1600 using a kit 18-55 at 18mm f3.5, 30 sec exposure. this is actually a stitch and there is paralax errors in the centre. it was taken standing on the gorge dam of burrator reservoir.
with that in mind i can get the same results from my d7100 with the same lense, iso, and fstop but with onlt a 15sec exposure.
so is it possible to see the milky, i would think it is. can you see that many stars with the naked eye, i would think so - i am not going to count them to find out for sure.
as for the moon, the moon is very bright, if you get the stars in the back ground, the moon would be over exposed, unless you used HDR - take 2 or more shots of different exposure (one for the moon, one for the stars) then combine them you would get what you are looking for ____________________ Current rides - 2016 Triumph Street Triple Rx, 1994 Suzuki Bandit 400 VM, TGB 204 Classic 125cc
"with nothing left to lose, there is everything to gain. It's not the size of the dog in the fight, it's the size of the fight in the dog" |
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| andy_uk |
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 andy_uk World Chat Champion

Joined: 13 Aug 2011 Karma :   
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| orac |
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 orac World Chat Champion
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| Islander |
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 Islander World Chat Champion

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| Islander |
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 Islander World Chat Champion

Joined: 05 Aug 2012 Karma :    
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 Posted: 20:55 - 21 Apr 2014 Post subject: |
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Double post  |
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| KLR600 |
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 KLR600 World Chat Champion

Joined: 15 Mar 2005 Karma :    
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 Posted: 01:13 - 22 Apr 2014 Post subject: |
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My friend took this photo at my wedding:
https://img.photobucket.com/albums/v331/serenaur/_MG_3278_zps74943759.jpg
It was a 30 second exposure and he used a strobe to light us. We're a bit blurred because we were a bit drunk and couldn't stand still for 30 seconds. You could clearly see the milky way with the naked eye and I have seen it loads of times in North Wales, granted he's done a bit of a levels tweak in photoshop on that photo but it was definitely very clearly visible with the naked eye. You can see some light pollution sneaking in from a nearby town on the left though. ____________________ Now: '00 Kawasaki ZRX1100R - Past: '84 Yamaha DT125, '89 Kawasaki KLR600, '97 Yamaha XJ600N
<My Bikepics Page> <My Yootoobes> <My Websites> <My Photos>
<Take Cool Photos!> |
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| _Will_ |
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 _Will_ World Chat Champion
Joined: 16 Jan 2006 Karma :  
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 Posted: 10:03 - 22 Apr 2014 Post subject: |
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| oldpink |
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 oldpink World Chat Champion

Joined: 02 Aug 2006 Karma :   
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Old Thread Alert!
The last post was made 12 years, 64 days ago. Instead of replying here, would creating a new thread be more useful? |
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