Friday, May 25, 2018   
 
Astrophotography Gallery > Star Trails > Bumpy Trails
Date: Saturday, August 10, 2013
Location: Ahwahnee Hills Observatory, California
 
This star trail image is unique because, instead of being taken with a wide-field lens, it was taken with a 300mm telephoto lens. Because of this, it can now easily be seen that Polaris, the brightest star in the field of view, is not quite aligned with the celestial north pole (though it is certainly close enough for most purposes, including navigation). Though the camera was on a sturdy tripod for the entire exposure, the occasional gusts of wind definitely had an impact on the star trails themselves.
 
Mount: Standard Tripod
Camera: Canon Rebel XT (350D, Stock)
Scope/Lens: Canon EF 300mm f/4.0L IS USM
Guide Scope: None
Guide Camera: None
 
Exposure #1 (RGB):
   1 x 3 Hours @ ISO 100, f/8.0
   1 Darks, 0 Flats/Dark Flats/Bias

 
Integration: 3 Hours, 0 Minutes, 0 Seconds
 
Processing: Adobe Photoshop CS6
(Click Image to View Original Full Size)
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