It shouldn't be too difficult to get the lens attached to the camera. It might take a little fiddling with adaptors and spacers to get the correct spacing. You shouldn't have to fight too much with tilt at f/5.6, at least not as much as with faster lenses. How well it will work is hard to guess until you test it. There aren't a lot of camera lenses that perform really well on star fields.
Cheers,
Rick.
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