Star Trails - Canon 60Da, Canon Lens EF 16 35mm f2.8L II U, Fixed Tripod, Dew Heater,
37 images - Exposure time 2 min , ISO 400, Aperture F4.0.
Post-processing: StarStax and Photoshop, Star Spikes filter
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Canon 60Da Star Trail Astrophotography - Upstate New York |
For last image I used the Star Spikes filter.
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StarSpikes Pro for Startrails |
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StarStax - Startrails |
From image easy to see that stars have counterclockwise direction of rotation. Our watch hands do not follow the star rotation direction; its follow the rotation direction of shadow of Sun. The shadow has the opposite direction to sky rotation. Even simple astro photo has a lot staff behind the scenes. This is why I like astrophotography.