The landscape, the low clouds and the night sky are naturally underexposed (by virtue of the black of a moonless night) allowing the appearance of the star trails. Mostly, it was necessary to aim the camera towards the wilderness areas of Northern Colorado where there is little light pollution. The lights of Denver, Loveland and Fort Collins pollute the eastern sky.
Image captured in RAW format. Processed in Apple's Aperture 3.
Cropped.
Noise Reduction: Radius: 2.0; Edge Detail: 3.0
White Balance: Temp: 3750 K; Tint: 21
96 Hot Pixels removed
Exposure: 0.95
Black Point: 3.54
Contrast: 0.08
Saturation: 1.25
Vibrancy: 0.34
Curves Adjustment: slight s-curve
Color:
Red: Hue: -43.2; Saturation: -61.4
Yellow: Hue: -33.2; Saturation: -17.4; Luminance: -.05
Green: Saturation: -100
Topaz Fusion Express 2, Adjust 4, moderate contrast pop applied globally
Exported to PSE8. Resized. USM. Converted to sRGB. Save for web...
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