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Post by Jason Thompson on Nov 27, 2006 11:14:54 GMT -4
How does the blackening of the sky make it more difficult to see if the lens flares are blocked by other objects like the ground or the LM?
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Post by gwiz on Nov 27, 2006 11:40:50 GMT -4
I couldn't yet find the photo with that speck of light with the series the composite was made of. Maybe Ed Hengeveld just added it in from another photo, as he did with the sun. In view of the provenance of this picture, it is pointless to try and make any deductions from it.
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reynoldbot
Jupiter
A paper-white mask of evil.
Posts: 790
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Post by reynoldbot on Nov 27, 2006 11:59:36 GMT -4
"NASA blackened the skies out" sounds so ominous. Sounds like an emo song. It has nothing to do with what concerns you, which I recall was any object other than the sky that the lens flare would not be in front of. I have to say I don't really know why this is an issue.
"I do not really know what a halo or a lens flare is, or really how to tell them apart, but it looks like some of the pictures of Apollo show halos, which I hear is caused by an atmosphere. Instead of it being possible that I don't know enough to tell the difference, Apollo must have been hoaxed. And when people who actually know a lot about both lens flares and halos tell me any different, I will tell them they are wrong for some reason."
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Post by tofu on Nov 27, 2006 12:09:38 GMT -4
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Post by lionking on Nov 27, 2006 12:54:30 GMT -4
"How does the blackening of the sky make it more difficult to see if the lens flares are blocked by other objects like the ground or the LM? "
I mean it makes photos with stars less .
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Post by HeadLikeARock (was postbaguk) on Nov 27, 2006 13:29:26 GMT -4
On a more serious note that's a fantastic image of Saturn... now my wallpaper.
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Post by lionking on Nov 27, 2006 16:06:50 GMT -4
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Post by lionking on Nov 27, 2006 16:11:35 GMT -4
O.K that is from Earth Orbit, so doeswn't apply
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Post by tofu on Nov 27, 2006 18:17:41 GMT -4
O.K that is from Earth Orbit, so doeswn't apply Well, maybe the Earth is on a sound stage just like Apollo. I mean, if you see the same effect in both photos, then the effect is likely the result of the same phenomenon in both cases. So, you see a photo that NASA claims was taken on the moon, but the photo has a halo. "Ah ha!" you say, "this is proof that these photos are taken in an atmosphere." Then I post two photos taken from *way* out in space, and you yourself post one taken from space. So maybe they're all fake. Right? What other explanation is there? All of these photos must be fake.
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Post by Jason Thompson on Nov 27, 2006 19:24:16 GMT -4
Taken from Earth orbit is irrelevant. It is taken through a window! You've just used a picture with an intervening layer that scatters light to produce halo effects to demonstrate that it goes behind something. Well, in this case it doesn't, it just stops where the medium causing the halo effect stops, i.e. the edge of the window.
You really have no clue what you are talking about here, do you lionking?
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Post by Count Zero on Nov 27, 2006 20:19:01 GMT -4
"How does the blackening of the sky make it more difficult to see if the lens flares are blocked by other objects like the ground or the LM? " I mean it makes photos with stars less . Good God, not this again. Once again: If your camera exposure is set to photograph a sunlit object anywhere inside the orbit of Neptune, whether it is a landscape, planet, moon or spacecraft... ...you will never, never, never, never, ever, never, never, never, never, never, never, never, never, never, never, never, never, never, ever, never, never, never, never, never, ever, never, never, never, never, never, ever, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, ever, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, ever, never, never, never, never, ever, never, never, never, never, never, never, never, never, never, never, never, never, never, never, never, ever, never, never, never, never, never, never, never, never, never, never, never, never, ever, never, never, never, never, never, never, never, never, never, EVER see stars in the photograph. If you do not understand this most simple of concepts, you do not have any business arguing about photographs.
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Post by lionking on Nov 28, 2006 5:57:52 GMT -4
Jason I totally forgot the glass issue, so you are right. In any cases, it does n't apply here
County county
why don't you take it easy? All what I am saying that the fact that NASA blackened the sky means less stars to see. And yes, there are some instances where stars are seen, but this is not our topic now.
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Post by Jason Thompson on Nov 28, 2006 6:24:09 GMT -4
All what I am saying that the fact that NASA blackened the sky means less stars to see.
Firstly, you need to show that 'NASA' has in fact blackened the sky. Yes, in a number of cases this was done, presumably to reduce the size of the files for posting on the net. However, 'unblackened' versions are available of every Apollo image.
And yes, there are some instances where stars are seen, but this is not our topic now.
No, you don't get out of that one. Stars appearing on the same piece of film as a bright, sunlit object is physically impossible due to the difference in brightness and the response of the film. That has been mathematically demonstrated, shown to be true in othwer instances, and confirmed by photogrpahy experts. Why do you insist that all that is wrong? If you see white specks on the black of the sky then they are something other than stars.
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Post by AstroSmurf on Nov 28, 2006 6:54:00 GMT -4
You can actually get stars in the same picture as e.g. the moon with sufficiently long exposure times. However, anything sunlit will show up bright as a magnesium flare. There were some nice Mt. Wilson photos on APOD a while back, but people kept thinking the Moon was the sun (or an UFO), it was so bright.
Moonlight plays merry hell with your dark-adaptation too. I've had bright afterimages on my retina after looking at craters for a while in my dinking little scope...
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Post by lionking on Nov 28, 2006 6:59:36 GMT -4
I asked Tuttle and he said he digitally altered the photos and gave examples like removing the seamlines and blckening the sky. as for the stars, what causes these www.hq.nasa.gov/office/pao/History/alsj/a15/20148250.jpg in the sky? if they increased the exposure or whatever, couldn't they have got big stars, like the sun that apppeared bcz it is bigger than the others?
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