January 31, 2016
by chris
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Writing about the spectral sensitivity of the Sentinel-2 satellite system and the implications this has for images generated from it i realized a broader discussion of the matter is in order. Creating images with realistic colors is one motive for … Continue reading
January 26, 2016
by chris
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As with normal ground level photography satellite images are often most impressive with a low sun position. Here is a Landsat based view of the highest mountain of the Alaska Range, Denali from January 16. The Denali is located on … Continue reading
January 12, 2016
by chris
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Based on my impressions with the initial look at the Sentinel-2 data (see part 1, part 2 and the addon to part 2) here some overall assessments in comparison to Landsat. This is preliminary of course – based on the … Continue reading
January 11, 2016
by chris
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I found a useful pair of scenes from Sentinel-2 and Landsat-8 from the same day which i would like to use to discuss a few more points. This kind of turns the originally planned two part post into a four … Continue reading
January 9, 2016
by chris
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As already pre-announced this is part 2 of a two part report on my first experiences with the data from the ESA Sentinel-2 satellite which is now available publicly. Part 1 was about downloading and accessing the data in general, … Continue reading
January 8, 2016
by chris
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As a teaser for the upcoming part two of my Sentinel-2 data review: This image is based on Sentinel-2 data from January 5 this year. See also this NASA page for more information. Note the strong red parts are not … Continue reading
January 4, 2016
by chris
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In June ESA launched their Sentinel-2A earth observation satellite and i criticized the hyperbole in their announcement – claiming it to be revolutionary before it even returned a single byte of observation data. It seems they took this criticism to … Continue reading
January 1, 2016
by chris
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The map of Franz Josef Land got an update with new map data and a new satellite image mosaic fully based on Landsat-8-data and produced to the standards previously shown in the Greenland and Svalbard images. The mapping is updated … Continue reading