SLR Sky Tracker

by goose117 Feb 18, 2017
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I've been toying with an idea like this for a couple of months now. I like your design. How long will it track before you begin to see trailing?

So Far, I've been able to use it up to about 5 minutes with 150mm Zoom. Could go much longer with wider focal lengths. Rule of thumb without a tracking scope is to divide 500 by the focal length. This give you the rough number of seconds you can track the sky. This method does much better than that.