File:Ahaggar Landsat 8 pan sharpened composite.jpg
Original file (8,751 × 8,751 pixels, file size: 24.49 MB, MIME type: image/jpeg)
Summary
| Description |
English: The Ahaggar, also known as the Hoggar, a volcanic mountain range in the central Sahara.
The image is averaged from 58 Landsat 8-scenes, provided by NASA. Bands 4, 3, 2 and 8 were combined into an RGB image. Panchromatic sharpening, conversion to radiance, weighted averaging, and rescaling to extrema of the scenes was done in R with the package RStoolbox. JPEG-encoded with Guetzli. Images acquired in the range 18 July 2013 – 2 March 2021, each at mean 10:05, range 10:04–10:07. The sun position range: azimuth 86°–155°, average 133°; elevation 38°–69°, average 52°. Resolution: 15m. Projection: UTM 31 N, WGS84. Center: 769590, 2574870. From WRS-2 Path 192 Row 044.Deutsch: Das Ahaggar, auch bekannt als Hoggar, ein vulkanisches Gebirge in der zentralen Sahara.
Das Bild ist gemittelt aus 58 Landsat 8-Aufnahmen, bereitgestellt von der NASA. Verwendet wurden die Kanäle 4, 3, 2 und 8 um ein RGB-Bild zu erzeugen. Die Aufnahmen wurden in R mit dem Paket RStoolbox panchromatisch geschärft, gewichtet gemittelt, und auf die Extrema skaliert. JPEG-enkodiert mit Guetzli. Aufnahmen aus dem Zeitraum 18 July 2013 – 2 March 2021, jeweils im Mittel um 10:05, Bereich 10:04–10:07. Der Sonnenstand rangiert im Bereich Azimuth 86°–155°, im Mittel 133°; Höhe 38°–69°, im Mittel 52°. Auflösung: 15m. Projektion: UTM 31 N, WGS84. Bildmitte: 769590, 2574870. Aus WRS-2 Path 192 Row 044. |
| Date | |
| Source | NASA, Own work |
| Author | Linus Wolf |
| Other versions |
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| Object location |  | View this and other nearby images on: OpenStreetMap |  |
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Licensing
 
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This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication. |
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 17:40, 19 March 2021 | | 8,751 × 8,751 (24.49 MB) | commons>Linus Wolf | increase number of input rasters to 58 |
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