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What about any deep sky image then? They are all composites and no single exposure would compete.
I guess this is a purist approach but I find Mike's image totally acceptable.
If I do a composite filtered image to create colour and its autoguided is that not an authentic photo?
Otherwise until technology develops much more you would be very limited as to how deep you can go and all will have some star trailing to a greater or lesser degree.
What if the resulting image were all done in camera? (no such routine exists but I am sure some smart programmer would have no trouble coming up with a routine, the D800 already can create a time lapse internally).
Greg.
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