Nightscapes - Robert Arn
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Gateway to Rocky Mountain

I have been working on developing a new processing technique for the past few weeks and I was finally able to collect some data that would work well. I call the technique "Variable High Dynamic Range" (VHDR) imaging. Normal HDR imaging involves taking exposures of different lengths and combining them to produce a single image. VHDR takes that one step further, in which different parts of the image have different high dynamic ranges.

Location: Rocky Mountain National Park, CO
Date: 2011-09-05
Camera: Canon XSi (modified)
Lens: Sigma 20mm f/1.8
Mount: Still Tripod, Astrotrac
Shot: VHDR (Variable High Dynamic Range) Mosaic
Land:
3x30 seconds f/4 ISO 800 (Mosaic)
3x120 seconds f/4 ISO 800 (Mosaic)
3x300 seconds f/4 ISO 800 (Mosaic)
Sky:
9x10 seconds f/2.8 ISO 1600 (Mosaic)
9x60 seconds f/4 ISO 800 (Mosaic) Tracked
Processing: Photoshop, Topaz DeNoise 5