Star Trails

14th April 2012 

Thought I would have a go at a simple Star Trail. This one was done using my Canon 40D DSLR, a 17-35mm Lens set at the 17mm end (Camera effective size 17mm  x 1.6 due to crop ratio or 27mm). This photo is 540 exposures at 15 secs @ISO 500 stacked with CS5 HD Merge option. 

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