Quote:
Originally Posted by [1ponders]
Ianska your exposure time to eliminate star trailing is a function of length focal length and where you are aiming in the sky. To prevent trailing T(sec) = 700/FL of lens. So roughly where the center of your shot is (Celestial Equator or 0 deg Declination) @ 17 mm you should be able to get 40sec without trailing being obvious.
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So a 30 second exposure should be fine then? I think I should invest in at least a half decent tripod really.