Thanks Raymo and Elliot,
The skies in Gove are pretty special. Im lucky to get out there 3-4 times year for work.....I try to plan it for the new moon.
I don't have a portable tracker, so 8s is about it before some trails. But the 5D4 is still ok at ISO 6400.
I have about 10 images to stack, but not sure when the point of diminishing returns kicks in for number of subs. Also at 8s subs, not sure if stacking will increase signal significantly, it should be a bit cleaner though....but as I say im pretty clueless when it come to post processing.
Cheers
Hemi
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