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#herschel

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Martin Holland<p>Das fand ich die Woche besonders cool. 👇🏼 Vielleicht gibt's ja doch am Nachthimmel überall und in jeder Richtung Galaxien, viele sind nur versteckt. </p><p><a href="https://social.heise.de/tags/astronomie" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomie</span></a> <a href="https://social.heise.de/tags/news" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>news</span></a> <a href="https://social.heise.de/tags/wissenschaft" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>wissenschaft</span></a> <a href="https://social.heise.de/tags/weltraum" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>weltraum</span></a> <a href="https://social.heise.de/tags/herschel" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>herschel</span></a><br>!astronomie@feddit.org</p><p><a href="https://www.heise.de/news/Raetsel-der-Astronomie-geloest-Zu-viele-Galaxien-in-alten-Aufnahmen-entdeckt-10348052.html?wt_mc=sm.red.ho.mastodon.mastodon.md_beitraege.md_beitraege&amp;utm_source=mastodon" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">heise.de/news/Raetsel-der-Astr</span><span class="invisible">onomie-geloest-Zu-viele-Galaxien-in-alten-Aufnahmen-entdeckt-10348052.html?wt_mc=sm.red.ho.mastodon.mastodon.md_beitraege.md_beitraege&amp;utm_source=mastodon</span></a></p>
Dr. Victoria Grinberg<p>Caroline <a href="https://mastodon.social/tags/Herschel" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Herschel</span></a> was an absolutely fascinating woman: stunted by a childhood encounter with typhus, she was actively stopped from learning more by her mother. Yet, she prevailed, becoming the first woman to get a salary as a scientist and the first woman to be employed by the government in England:</p><p><a href="https://en.m.wikipedia.org/wiki/Caroline_Herschel" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">en.m.wikipedia.org/wiki/Caroli</span><span class="invisible">ne_Herschel</span></a></p><p>The Royal Astronomical Society and the German Astronomical Society are jointly awarding the Caroline Herschel medal</p><p><a href="https://ras.ac.uk/awards-and-grands/caroline-herschel-medal" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">ras.ac.uk/awards-and-grands/ca</span><span class="invisible">roline-herschel-medal</span></a></p><p><a href="https://mastodon.social/tags/astrodon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astrodon</span></a> <a href="https://mastodon.social/tags/WomenInSTEM" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>WomenInSTEM</span></a></p>
Dr. Victoria Grinberg<p>I like the way that William <a href="https://mastodon.social/tags/Herschel" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Herschel</span></a> is introduced as Caroline Herschel's brother in the Royal Greenwich Observatory exhibition:</p><p><a href="https://mastodon.social/tags/astrodon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astrodon</span></a></p>
Phil Stooke<p>I answered my first map question in a separate post. Back to Herschel: his map has no coordinates but coordinates can be approximated. I projected the Herschel map into a cylindrical projection and then into two equator-centred azimuthal projections making the best match I could to modern coordinates. My intention was to take a variety of historical and recent maps in different projections and display them all in a common format for comparison. <a href="https://mastodon.social/tags/maps" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>maps</span></a> <a href="https://mastodon.social/tags/Mars" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Mars</span></a> <a href="https://mastodon.social/tags/Herschel" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Herschel</span></a></p>
Phil Stooke<p>Here is Herschel's actual map (left). I compare it with a mid-20th Century map in the same projection (azimuthal, extending from the south pole at centre to the mid-latitudes in the northern hemisphere). There's no coordinate grid but it vaguely resembles the more modern map. It's the first map of Mars, but not the first map of another planet. Anyone care to speculate who made the first map of another planet, and which one? <a href="https://mastodon.social/tags/maps" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>maps</span></a> <a href="https://mastodon.social/tags/Mars" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Mars</span></a> <a href="https://mastodon.social/tags/Herschel" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Herschel</span></a></p>
Phil Stooke<p>William Herschel made this first Mars map by rotating his drawings so he could join them at the south pole and arrange the drawings like petals of a flower. This drawing shows the concept. He had more than 4 pictures, some of which filled in a gap in coverage in my set, but you get the idea. A bit of fudging to join features properly, and you could start to make a pole-centred map. He did it better - that's why he was a Sir and I'm not. <a href="https://mastodon.social/tags/maps" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>maps</span></a> <a href="https://mastodon.social/tags/Mars" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Mars</span></a> <a href="https://mastodon.social/tags/Herschel" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Herschel</span></a></p>
Phil Stooke<p>Let's join some of Herschel's images together. Here are 4 from the bottom row of the previous image, rotated to put the small south polar cap at the bottom and aligned along the equator. This is not really the correct geometry, just a thought experiment or 'a concept of a map'. I added the 19th Century names. Thoth-Nepenthes is less prominent now than it was then. With some fudging to merge them you could make a rough map. Herschel didn't do this, however. <a href="https://mastodon.social/tags/maps" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>maps</span></a> <a href="https://mastodon.social/tags/mars" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>mars</span></a> <a href="https://mastodon.social/tags/Herschel" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Herschel</span></a></p>
Prof Stephen Serjeant<p>This looks like a starry sky but it’s not. Every dot is a whole galaxy, each containing hundreds of billions of stars. The wisps are foreground dust in our own Milky Way galaxy. Some of the brightest looking galaxies are being magnified by warped space and time. Image from our H-ATLAS project on the <a href="https://mas.to/tags/Herschel" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Herschel</span></a> Space Observatory.</p>
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