Very sharp arachnids Fred!
Not too sure how the 24-70 will go for astro work - I recently sold mine as it didn't do it for me - I had bought it for its daytime reputation and hoped that would be replicated under the stars...didn't work out.
That said, time lapse work is a different beastie so the same rules might not apply.
I miss that big hunk of glass for daytime stuff though - it really is a monster of a lens.
Doug
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