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Old Sunday 30th October 2016, 08:27   #1
Chosun Juan
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Exclamation Canon 400mm f2.8 II array

Not quite too sure which forum to post this in, but figured there might be a few stargazers here who would appreciate it, even if it's mostly set up for the reverse! - using astro gear to photograph terrestrially .....
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A "dragonfly" array of 24! count them! Canon 400mm f2.8L II lenses with the important SWC (although I think other manufacturer's Nano coat technologies might be just as good?) are used to spot difficult to photograph cosmic phenomena .... way to spend quarter of a million buck$!

https://m.dpreview.com/news/61962100...r-new-galaxies

Perhaps some of you DIY nutters on here might get some ideas???


Chosun

Last edited by Chosun Juan : Sunday 30th October 2016 at 10:06.
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Old Friday 4th November 2016, 14:24   #2
DanC.Licks
AKA Daniel Bradley
 
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Very interesting! Impressive, to say the least...
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Old Friday 4th November 2016, 15:42   #3
Vespobuteo
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I did some calc and it seems that this setup is equivalent to a f/0.1 lens?!!
Could that be correct?
Not possible to build a single lens that fast I guess...
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