Andrew and Paul, the thing is obviously moving but slowly, because as i recall, when i do imaging i always bracket my exposures with a 30second gap before the next exposure.
So I's like this, 40sec's exp, than 30 sec gap, than 40sec exp, that explains its different positions with each frame, but why is it moving, that is what i would like to know.
And also the larger gap in the middle of the eight frames is because i lost that frame to a remote switch malfunction, other wise the gaps would have been equal.
Cheers leon
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