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Forum: Pentax K-3 & K-3 II
08-03-2016, 09:53 PM
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It's a good start. So, you're on the right track.
One of the things you must consider is the position to the sky. To the Polar star, the movement is very small, but increase very much to the Ecliptic, at 90 degrees of the pole. So, the performance can differ.
IMO, your images present some small movement, even the short one, of 125s. Probably, 18mm is to much for such a long time. Try 80s, or 60s, and rise the ISO to 400 and even much more, depending of your camera.
I don't know if you had used a cable, or a remote to take the shot, but is better this way. Even better is to use mirror lock-up, to take night shots.
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