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My interview on Google Local Guide Connect
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Une photo composite du glacier Upsala pour l’explorer en détail (34 clichés, 183 MB !). L’Argentine 🇦🇷 peut être fière de ses paysages à couper le souffle et de son champ de glace en Patagonie. Moins réjouissant : ses glaciers constituent notre point de repère principal de la fonte des glaces et de la montée des eaux qu’elle entraîne inévitablement. Et c’est de l’espace qu’on relève cette évolution, comme un grand nombre de variables climatiques suivis par les satellites d’observation de la Terre. Si vous cliquez sur le lien, vous pourrez explorer ce glacier dans ses moindres détails. Malgré sa forme solide, on voit parfaitement, par exemple, que la glace s'écoule... très... lentement.
I photographed the Upsala Glacier last week but now fine folks have combined and mapped all the 34 pictures into a 183 mb behemoth of an image. Zoom in and explore this beautiful natural sight, Alexander Gerst went to visit the Patagonia after his first mission because the whole region is so amazing seen from space. The glacier, like all glaciers, is getting smaller, but the ESA scientists observing our planet will tell you more about that... they have the data. Read the caption and zoom and explore Upsala glacier: www.esa.int/ESA_Multimedia/Images/2021/05/Upsala_Glacier_...
Credits: ESA/NASA–T. Pesquet/A. Conigli
GMT128_18_48_For ESA_Thomas Pesquet_Upsala glacier - possible mapping
(help my city!)
Conformal mappings are great: it's a very powerful branch of mathematics, which basically says you can deform almost any 2D object and transform it into something else while keeping the shape of objects the same (on a small scale). Hence this picture: you see no holes, no obvious distortion, but this image cannot be real. This trick is inspired by a painting by M.C. Escher: some Dutch mathematicians have found what the transformation is and explained it in (almost) layman terms.
In this particular case the image is twice repeated. In the parameterization discussed here, this is a (1,2) spiral
This image was done in The Gimp and transformed with MathMap.
Cool ice formations in front of the dock. We should have total ice out in a day or two. Most of the river is free in the center of the channel, but the sides are still icy.
Nick using the map on our descent from Tarren Hendre. The Dyfi estuary and Cardigan Bay in the distance.
©JaneBrown2019 All Rights Reserved. This image is not available for use on websites, blogs or other media without explicit written permission
flickr is still playing up, I am doing my best to comment and fave
Un nouveau collage de 68 photos, cette fois-ci ce sont les Keys de Floride. Cet archipel s’étend au Sud de la péninsule floridienne et le chapelet d’îles dessine une longue courbe, avec souvent juste la largeur pour y faire passer une route, et la mer des deux côtés. En zoomant (si vous cliquez sur le lien) vous pourrez suivre l’autoroute et passer d’île en île, ou vous perdre dans les nuances bleues de l’océan. L’image fait près de 200 km de long, mais on a survolé cette zone en quelques dizaines de secondes à peine ! www.esa.int/ESA_Multimedia/Images/2021/05/Florida_Keys_fr...
This Big Picture of the Florida Keys allows you to explore all the way down Highway 1 to the end, hopping from island to island, or see details in the shades of blue of the water. I am not sure why they are called The Keys, but maybe it is because it looks like a key from space? 🔑🤔 This collage was made from 68 pictures and spans around 200 km on Earth! www.esa.int/ESA_Multimedia/Images/2021/05/Florida_Keys_fr...
GMT118_17_22_For ESA_Thomas Pesquet_Florida 800mm and the keys photo mapping
Mapping invisible / Mendiak
The memory of what has been real, it’s already a proof of the absence, the
landscapes where the other one is missing... it has been for real? Only the
lines, strokes, stains, the gesture, the partial, the oblivion… The memory
beyond the landscape, recreated inside the interior arquitecture, broken,
incomplete, as the geography of the contemporary identity.
“When the peaks of our sky come together. My house will have a roof.” - Paul Eluard
Nous avons survolé la zone démilitarisée et lourdement gardée qui chevauche la frontière entre la République populaire démocratique de Corée et la République de Corée. Le contraste est très visible de jour mais il est encore plus marquant de nuit : les lumières du sud et de Seoul se transforment en obscurité totale dès la frontière passée, à la rare exception de Pyongyang, seule tache de lumière dans un pays obscur. Peu de gens ont l’opportunité de zoomer sur Pyongyang, ce qui fait de ce photocollage une bonne occasion de l’explorer : vous ou moi n’approcherons sans doute jamais la ville de plus près.
We flew over the de-militarised zone, the heavily guarded border between the Democratic People’s Republic of Korea and Republic of Korea. You see the contrast by day, but it’s even more striking at night: the brightly lit area on the left is Seoul and the south of the Korean peninsula, and it turns into almost complete darkness right after the border... the only small spot of lights is Pyongyang. I could zoom up on the capital city of DPRK, not many people are in a position to do so… explore the city in the Big Picture mapping, that’s probably as close to it as you’ll ever get to the city, and me too: www.esa.int/ESA_Multimedia/Images/2021/09/Pyongyang_photo...
Expedition 65 earth observation composite of Pyongyang, North Korea photographed by ESA astronaut Thomas Pesquet (created with iss065e242955 - iss065e242995).
GMT227_00_08_For ESA_Thomas Pesquet_Pyongyang Seoul - 1120mm mapping
jsc2021e037840-Pyongyang
LMU Management Alumni - Universität München - Eventagentur Servicebroker - videomapping by crushed eyes media
The Sun's axis of rotation varies in relation to the solar North pole over the course of a year. Interesting article in Sky at Night magazine about using freeware programs "Helio" and "Tilting Sun" to measure the tilt and overlay a grid for any solar image taken at a particular time. 0-180 line is true North-South and on the 30th September 2017, the axial tilt (P0) was 25,93 degrees.
There is also variation on the forward tilt of the Sun over the year. You can see more grid lines at the North Pole than the South in this instance. The angle of tilt is given as B0 and varies between plus and minus 7 degrees over the year.
The article also quoted the Mount Wilson Solar Seeing Scale - there was good seeing on the day this image was taken - probably a 4:
4: Sun is sharp for more time than it is fuzzy. Solar granulations visible for most of the time. Limb motion and resolution are in the 1-2 arcsecond range.
Equinox ED 120mm scope with Baader Herschel wedge
ZWO ASI174 MM cooled to 14c
700 Years by Zizi Majid, Muhammad Izdi, Jeremie Bellot (AV Extended) at the facade of National Museum Singapore during Singapore Night Festival 2023.