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Opferkessel atop Old Rag Mountain by Callan Bentley

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About This Gigapan

Taken by
Callan Bentley Callan Bentley
Explore score
0.74 Gigapixels
Date added
Apr 11, 2011
Date taken
Apr 09, 2011

Weathering pits called opferkessel form atop rock exposures due to chemical and physical weathering. They may superficially resemble potholes, but are not caused by vortices of swirling water "drilling" into the rock. The water trapped in the opferkessel may host small ecosystems with surprising organisms.

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Stitcher Notes


GigaPan Stitch version 1.1.1241 (Windows)
Panorama size: 741 megapixels (42960 x 17256 pixels)
Input images: 180 (20 columns by 9 rows)
Field of view: 75.0 degrees wide by 30.1 degrees high (top=-4.8, bottom=-34.9)
Vignette correction on: c1=-0.00942 c2=-0.0329
All default settings
Original image properties:
Camera make: Canon
Camera model: Canon PowerShot SX120 IS
Image size: 3648x2736 (10.0 megapixels)
Capture time: 2011-04-10 01:38:05 - 2011-04-10 01:49:57
Aperture: f/4.3
Exposure time: 0.000625
ISO: 100
Focal length (35mm equiv.): 361.4 mm
Digital zoom: off
White balance: Fixed
Exposure mode: Manual
Horizontal overlap: 32.5 to 59.9 percent
Vertical overlap: 28.6 to 98.5 percent
Computer stats: 8175.03 MB RAM, 4 CPUs
Total time 18:47 (6.3 seconds per picture)
Alignment: 8:53, Projection: 3:07, Blending: 6:48
(Preview finished in 13:34)

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