At 7:47 AM -0400 9/10/11, Mark Roberts wrote:
Cotty wrote:
On 9/9/11, Mark Roberts, discombobulated, unleashed:
Wow. Just wow.
>>http://www.bbc.co.uk/news/science-environment-14792580
Totally. Though the winner is a composite image which surprises me.
Yes, that really surprised me. Perhaps the original photo showed the
two moons with Jupiter but not with good definition and the separate
images were brought in to enhance their appearance? I'd like to know
more about the situation.
That's the situation. Jupiter would be over 100 times brighter than
the moons, so a properly exposed image of Jupiter would have the
moons barely registering...and a properly exposed image of the moons
would have Jupiter incredibly overexposed.
Those deep-sky photos probably required exposures on the order of a
day or more...
--
Steve Sharpe
[email protected]
http://earth.delith.com/photo_gallery.html
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