{"id":579721,"date":"2010-05-26T09:23:55","date_gmt":"2010-05-26T13:23:55","guid":{"rendered":"http:\/\/blogs.discovermagazine.com\/badastronomy\/?p=16359"},"modified":"2010-05-26T09:23:55","modified_gmt":"2010-05-26T13:23:55","slug":"two-solar-iss-transits-bad-astronomy","status":"publish","type":"post","link":"https:\/\/mereja.media\/index\/579721","title":{"rendered":"Two solar ISS transits! | Bad Astronomy"},"content":{"rendered":"<p>I have two more amazing images for you! Both show the same thing &#8212; the International Space Station crossing the Sun &#8212; but in different ways.<\/p>\n<p>The first is, once again, from Thierry Legault:<\/p>\n<p><a rel=\"nofollow\"  href=\"http:\/\/www.astrophoto.fr\/iss_atlantis_transit2_2010.html\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/blogs.discovermagazine.com\/badastronomy\/files\/2010\/05\/thierry_transit_iss.jpg\" alt=\"thierry_transit_iss\" title=\"thierry_transit_iss\" width=\"610\" height=\"407\" class=\"aligncenter size-full wp-image-16360\"\/><\/a><\/p>\n<p>Wow! You can clearly see the station (with <em>Atlantis<\/em> docked on the left!) as it crosses the Sun. Here&#8217;s a slight closeup:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/blogs.discovermagazine.com\/badastronomy\/files\/2010\/05\/thierry_transit_iss2.jpg\" alt=\"thierry_transit_iss2\" title=\"thierry_transit_iss2\" width=\"601\" height=\"460\" class=\"aligncenter size-full wp-image-16361\"\/><\/p>\n<p>There&#8217;s a nice sunspot pair there in the upper right; the one on the right looks like a face, actually. Cute. This shot was taken at 1\/8000th of a second, which froze the action nicely. He has <a rel=\"nofollow\"  href=\"http:\/\/www.astrophoto.fr\/iss_atlantis_transit2_2010.html\">higher resolution pictures on his webpage<\/a> for this event.<\/p>\n<p>The second picture is slightly different:<\/p>\n<p><a rel=\"nofollow\"  href=\"http:\/\/www.heiko-schaut-ins-all.de\/hsia\/\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/blogs.discovermagazine.com\/badastronomy\/files\/2010\/05\/heiko_iss_transit.jpg\" alt=\"heiko_iss_transit\" title=\"heiko_iss_transit\" width=\"610\" height=\"279\" class=\"aligncenter size-full wp-image-16362\"\/><\/a><\/p>\n<p>It was taken by <a rel=\"nofollow\"  href=\"http:\/\/www.heiko-schaut-ins-all.de\/hsia\/\">Heiko Mehring<\/a> and obviously shows a <em>series<\/em> of silhouettes as the ISS and Atlantis crossed the Sun. You can clearly see the same sunspots, but the path of the spacecraft is slightly different, and the spots look a bit different as well. The equipment Heiko used was less fancy than what Thierry has, but you can still see a lot of detail in the image. It really is amazing that we can see such detail on the station from the ground!<\/p>\n<p>I suspect the atmosphere was steadier at Thierry&#8217;s observing site too; <a rel=\"nofollow\"  href=\"http:\/\/www.astrophoto.fr\/iss_atlantis_transit2_2010.html\">in the images on his page<\/a> you can see the granulation on the surface of the Sun. Those granules are vast columns of hot gas rising to the Sun&#8217;s surface, cooling off, then sinking again. It&#8217;s a grand version of the convection that happens when you boil water in your teapot! <\/p>\n<p><em>[Update: <a rel=\"nofollow\"  href=\"http:\/\/www.perseus.gr\/Astro-Sat-Trans-2010-05-25.htm\">A third site with a great shot of the transit<\/a> was pointed out in the comments below. I wonder how many more are out there?] <\/em><\/p>\n<p>These kinds of shots take a lot of planning, a lot of experience, and a bit of good fortune (or whatever politically correct term skeptics are supposed to use these days). When I was younger I shot a LOT of film of the Moon, and got maybe a 10% success rate if I was doing well. Digital cameras and the Internet make it a whole lot easier to get spectacular shots like these. I&#8217;m glad to see more people tackling these difficult shots, and expect that we&#8217;ll be seeing lots more like these as time goes on. <\/p>\n<p><em>Tip o&#8217; the dew cap to Thierry Legault and Jan Sorg for sending these to me.<\/em><br \/>\n<br clear=\"all\"><\/p>\n<p><a rel=\"nofollow\"  href=\"http:\/\/feedads.g.doubleclick.net\/~a\/N4imcuULXjX4CNvbg2npCEOa8aE\/0\/da\"><img decoding=\"async\" src=\"http:\/\/feedads.g.doubleclick.net\/~a\/N4imcuULXjX4CNvbg2npCEOa8aE\/0\/di\" border=\"0\" ismap><\/a><br \/>\n<a rel=\"nofollow\"  href=\"http:\/\/feedads.g.doubleclick.net\/~a\/N4imcuULXjX4CNvbg2npCEOa8aE\/1\/da\"><img decoding=\"async\" src=\"http:\/\/feedads.g.doubleclick.net\/~a\/N4imcuULXjX4CNvbg2npCEOa8aE\/1\/di\" border=\"0\" ismap><\/a><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/feeds.feedburner.com\/~r\/BadAstronomyBlog\/~4\/AWSvfWq7X-A\" height=\"1\" width=\"1\"\/><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/feeds.feedburner.com\/~r\/DiscoverMag\/~4\/UH1r9THhinM\" height=\"1\" width=\"1\"\/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>I have two more amazing images for you! Both show the same thing &#8212; the International Space Station crossing the Sun &#8212; but in different ways. The first is, once again, from Thierry Legault: Wow! You can clearly see the station (with Atlantis docked on the left!) as it crosses the Sun. Here&#8217;s a slight [&hellip;]<\/p>\n","protected":false},"author":641,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-579721","post","type-post","status-publish","format-standard","hentry","category-news"],"_links":{"self":[{"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/posts\/579721","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/users\/641"}],"replies":[{"embeddable":true,"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/comments?post=579721"}],"version-history":[{"count":0,"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/posts\/579721\/revisions"}],"wp:attachment":[{"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/media?parent=579721"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/categories?post=579721"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/tags?post=579721"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}