A lecture by independent historian John Cloud about indigenous contributions to early American mapmaking and surveys of the newly acquired territory of Alaska is now online. The lecture, titled “The Treaty of Cession, as Seen through the Lenses of Art, Cartography, and Photography,” is 80 minutes long and full of interesting stuff about the early history of Alaska. Cloud gave the talk on 15 November at the Sealaska Heritage Institute in Juneau, as part of the institute’s Native American Heritage Month. Local public radio station KTOO had a short article on the talk last month. [Tony Campbell]
This NOAA article looks at three kinds of imagery provided by the GOES-16 geostationary weather satellite: GeoColor, the Geostationary Lightning Mapper (!), and full disk infrared imagery from the Advanced Baseline Imager. GOES-16 launched last November and is currently in the checkout phase before it replaces GOES-13 at 75° west latitude.
This digitisation process combines high resolution scanning, up to 1200 dpi, with precise lighting technique and incredibly accurate colour rendition. This process is ideal for scanning really large, long items like this map, panoramas and items with high levels of fine detail. The files captured at these resolutions allow up to 50× enlargement, making them excellent sources for detailed investigation into aspects of the physical substrate of the item and for innovative multimedia exhibition and display.
The map was scanned in 15cm sections and will be stitched together to create an exceptionally accurate and detailed high resolution file.
Oxford geography professor Danny Dorling spoke at the TEDx Exeter conference in April 2016. If you’re familiar with Dorling’s work, it will come as no surprise that he makes extensive use of cartograms to describe the world’s population. Video: TED, YouTube.