Effect of Size of Parabolic Mirror in Bad Seeing

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MooEy
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Joined: Sat Oct 04, 2003 6:24 am

Post by MooEy »

here we go again -_-

anyway, from those pics, i can't really tell the difference of turbluence. but the 2nd set seems to be slighty less exposed than the first set, also seem to be slighty sharper due to DOF.

~MooEy~
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weixing
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Favourite scope: Vixen R200SS & Celestron 6" F5 Achro Refractor
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Post by weixing »

Hi,
Hey.... Don't like that lah... :( you can't use the image of that pair of florescent lamps to look for the effect of turbulence lah. I don't think there are any turbulence between you and that pair of florescent lamps.

If you really want to use a terrestrial object for checking the effect of turbulence, use a far away object on sea at night, such as a far away ship... the hot air above the sea will rise and causing some air turbulence and this should cause a similar effect of atmospheric turbulance.

Have a nice day.
Yang Weixing
:mrgreen: "The universe is composed mainly of hydrogen and ignorance." :mrgreen:
madscientist
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Joined: Mon Nov 15, 2004 8:56 pm

Post by madscientist »

haha, maybe viewing across the expressway during a hot afternoon can create a worst-case scenario, :P
ChaosKnight
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Joined: Sun Oct 05, 2003 6:54 pm

Post by ChaosKnight »

You can see the images have this wavy effect that is due to turbulence. And those lamps are very far away....i'm at Boon Lay and those lamps are on a building somewhere at Lim Chu Kang.

Anyway i can't see any difference between the two also, based on turbulence alone.
madscientist
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Joined: Mon Nov 15, 2004 8:56 pm

Post by madscientist »

i don't think our eyes have the same sensitivity for details as the webcam, :)
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