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Challenge: The Photodetective Game
apenpaapDate: Tuesday, 18.02.2014, 11:40 | Message # 121
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Alright, time for a hint: you have already noticed this image was taken with a small FOV. But I don't think you've quite realised all the implications of just how tiny the FOV is here. We are very far away from both bodies, and the Sun is hidden behind neither. And it's definitely possible to deduct the names of both of them.




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Edited by apenpaap - Tuesday, 18.02.2014, 11:40
 
JCandeiasDate: Tuesday, 18.02.2014, 17:42 | Message # 122
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If the sun isn't hidden behind the object at the right, then where is its crescent?

It makes no sense.

Added (18.02.2014, 20:42)
---------------------------------------------
Unless...

If the angle between the sun and the planet on the left is much more pronounced than the angle between the sun and the planet on the right, that just might explain the very noticeable phase difference between the two. Just might. That would mean that the planet on the left has to be Jupiter and the planet on the right has to be Neptune.




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apenpaapDate: Tuesday, 18.02.2014, 19:49 | Message # 123
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Very good, you're almost there. You've just got the planets wrong. Take a good, close look at the one on the left, maybe increase your screen's brightness a bit, and I think you'll be able to tell which planets these are.




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JCandeiasDate: Tuesday, 18.02.2014, 19:56 | Message # 124
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Don't have to. If it isn't Jupiter, it has to be Saturn. No other planet is big enough.




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apenpaapDate: Tuesday, 18.02.2014, 19:56 | Message # 125
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It's neither Jupiter nor Saturn.




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JCandeiasDate: Tuesday, 18.02.2014, 20:21 | Message # 126
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OK, I give up.




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LiveLife42Date: Tuesday, 18.02.2014, 20:39 | Message # 127
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Alright just a wild guess is it pluto and charon?
Edit: Nvm it's two planets.





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Edited by LiveLife42 - Tuesday, 18.02.2014, 20:40
 
apenpaapDate: Tuesday, 18.02.2014, 20:41 | Message # 128
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Not Pluto and Charon. JCandeias was right that these planets are at different distances, allowing the phase difference.




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JCandeiasDate: Tuesday, 18.02.2014, 21:25 | Message # 129
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apenpaap, isn't it clear we're entering in the realm of pure guessing now?




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apenpaapDate: Tuesday, 18.02.2014, 21:29 | Message # 130
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It doesn't need to be guessing; just take a closer look at the left planet. At its aurora, to be precise.




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JCandeiasDate: Tuesday, 18.02.2014, 21:49 | Message # 131
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I did, and didn't see any aurora. I saw a blob, that can easily be explained away by a background galaxy. Also, many planets have aurorae. The Earth has them, Jupiter has them, Saturn has them, even Mars has them.

Yes, you can eventually get to the right answer by guessing away all the wrong ones. But that is not the purpose of this game.





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Edited by JCandeias - Tuesday, 18.02.2014, 21:49
 
apenpaapDate: Tuesday, 18.02.2014, 22:00 | Message # 132
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Fine, if you want the solution, it's Earth and Mars. And if you looked at the details, you could have deducted it simply by discarding impossibilities and seeing what's left. Both are clearly bodies with a significant atmosphere, or the crescent of the Earth wouldn't be more than 180 degrees round, and there would be no light on Mars rather than the thin ring of the glowing atmosphere. That means they can only be Venus, Earth, Mars, Titan, or gas giants. The aurora on Earth is green, while the gas giants have yellow aurorae, proving the left body is Earth. That means the smaller body is Venus, Mars, or Titan.
The Deep Field in the background showcases the tiny FOV, meaning the camera is extremely far off and there are as good as no perspective effects at work, therefore the bodies are shown at the same scale, which means Venus would look bigger and Titan smaller. Therefore, Earth and Mars is the only logical answer.

Quote JCandeias ()
I saw a blob, that can easily be explained away by a background galaxy.


In front of a planet?





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JCandeiasDate: Tuesday, 18.02.2014, 22:01 | Message # 133
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Quote apenpaap ()
In front of a planet?


In front of the planet all I see is blackness.





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apenpaapDate: Tuesday, 18.02.2014, 22:07 | Message # 134
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I did advice turning your monitor's brightness up a little. In any case, as far as I'm concerned anyone who likes can post the next screenshot; I haven't got another one.




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JCandeiasDate: Tuesday, 18.02.2014, 22:12 | Message # 135
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Quote apenpaap ()
I did advice turning your monitor's brightness up a little.


If you need people to change monitor settings to see what you are trying to show them, it means it's you who should change the exposure at which you take your pictures. I'm surely not going to change my monitor's settings -- I had a hard enough time to get it in working order in the first place.

Anyway, another relatively easy image, to relax a bit from the insanely hard ones. Who knows what's this?


Attachments: 5935035.jpg (232.6 Kb)





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