Howard's Astronomical Adventures
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Star Trails at Point of Rocks

Stars trace 76 minutes of the Earth rotation during the 2009 Leonid Meteor shower. Taken at Point of Rocks, in the Cimarron National Grassland located by Elkhart, KS

Click image for larger version (960x1440).

This picture is composed of 100 individual photos taken early in the morning. During the night this camera took 420 images over a 5 1/2 hour period.

Photograph Information
Date11.17.2009, 03:00 - 04:15
LocationPoint of Rocks, Cimarron National Grasslands, by Elkhart KS
LensTokina 12mm @ f4
CameraCanon 40D
Exposure100 exposures of 45 seconds at ISO 1600 (76 minutes total)
NotesExcellent transparency, temperature around 25°F, poor seeing.

Initial RAW conversion in Canon DPP, processing in Photoshop CS2, stacked using Chris Schur's Star Trails action.

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