{"id":3198,"date":"2011-12-12T00:28:37","date_gmt":"2011-12-12T04:28:37","guid":{"rendered":"http:\/\/johncohn.org\/base\/?p=3198"},"modified":"2011-12-12T00:28:37","modified_gmt":"2011-12-12T04:28:37","slug":"sunday-night-ephimeris","status":"publish","type":"post","link":"http:\/\/johncohn.org\/base\/2011\/12\/12\/sunday-night-ephimeris\/","title":{"rendered":"Sunday night -Ephimeris"},"content":{"rendered":"<p>&nbsp;<\/p>\n<p>Very peaceful day.. beautiful outside.. cold and clear.. got me motivated to get out my telescope to see if I could get a shot of Jupiter which is bright in the sky now..\u00a0\u00a0 it&#8217;s really amazing how big Jupiter&#8217;s moons appear even under low magnification. I was telling Gabe at dinner about how folks used to use the transits of Janitors moons as a universal time reference which allowed them to calculate Longitude.The transit times were carefully recorded and a fixed place (ie. Greenwich England) and published in books called Ephimeris.. Someone in a different part of the world could use those transit times., star positions\u00a0 and a little geometry to figure out how how far east or west they were from the original measurment point. That&#8217;s the best folks had until good accurate clocks became available in the late 18th century.. Dava Sobel wrote a great book about it called &#8216;Longitude&#8217; ..Check it out..<\/p>\n<p>Jupiter looked great through my scope.. unfortunately this is the best picture I could grab by putting my blogging camera up to the eyepiece.. .. still.. ti&#8217;s clear enough to see three of the four &#8216;Gallelian&#8217; moons <a href=\"http:\/\/nineplanets.org\/io.html\">Io<\/a>,        <a href=\"http:\/\/nineplanets.org\/europa.html\">Europa<\/a>,        <a href=\"http:\/\/nineplanets.org\/ganymede.html\">Ganymede<\/a> and        <a href=\"http:\/\/nineplanets.org\/callisto.html\">Callisto<\/a>.. .. I&#8217;m not certain. but\u00a0 by their orbits , I think Ganymeade is the one missing here.. it must be behind the planet.<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/i147.photobucket.com\/albums\/r319\/johncohn\/dec1111\/IMG_7417.jpg\" alt=\"\" \/><\/p>\n<p><img decoding=\"async\" src=\"http:\/\/i147.photobucket.com\/albums\/r319\/johncohn\/dec1111\/closer.jpg\" alt=\"\" \/><\/p>\n<p>Our moon was unsurprisingly easier to spot \ud83d\ude42\u00a0 .. You can tell by the fuzzy outlines here that the air wasn&#8217;t that stable tonight.. but I always like looking at the moon !<br \/>\n<img decoding=\"async\" src=\"http:\/\/i147.photobucket.com\/albums\/r319\/johncohn\/dec1111\/moon.jpg\" alt=\"\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>I can tell by the positions of the moon that\u00a0 it was dinner time &#8230; Diane made homemade chille rellenos.. using Kale she pulled fromthe garden..<\/p>\n<p>It&#8217;s funny how kale lasts into the winter.. (note the snow !)<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/i147.photobucket.com\/albums\/r319\/johncohn\/dec1111\/IMG_7383.jpg\" alt=\"\" \/><\/p>\n<p><img decoding=\"async\" src=\"http:\/\/i147.photobucket.com\/albums\/r319\/johncohn\/dec1111\/IMG_7391.jpg\" alt=\"\" \/><\/p>\n<p>OK.. time for bed.. more tomorrow.<\/p>\n<p>nite all, nite sam<\/p>\n<p>-me<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; Very peaceful day.. beautiful outside.. cold and clear.. got me motivated to get out my telescope to see if I could get a shot of Jupiter which is bright in the sky now..\u00a0\u00a0 it&#8217;s really amazing how big Jupiter&#8217;s moons appear even under low magnification. I was telling Gabe at dinner about how folks &hellip; <a href=\"http:\/\/johncohn.org\/base\/2011\/12\/12\/sunday-night-ephimeris\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Sunday night -Ephimeris<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"enabled":false},"version":2}},"categories":[1],"tags":[344],"class_list":["post-3198","post","type-post","status-publish","format-standard","hentry","tag-ephemeris"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"http:\/\/johncohn.org\/base\/wp-json\/wp\/v2\/posts\/3198","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/johncohn.org\/base\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/johncohn.org\/base\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/johncohn.org\/base\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/johncohn.org\/base\/wp-json\/wp\/v2\/comments?post=3198"}],"version-history":[{"count":2,"href":"http:\/\/johncohn.org\/base\/wp-json\/wp\/v2\/posts\/3198\/revisions"}],"predecessor-version":[{"id":3200,"href":"http:\/\/johncohn.org\/base\/wp-json\/wp\/v2\/posts\/3198\/revisions\/3200"}],"wp:attachment":[{"href":"http:\/\/johncohn.org\/base\/wp-json\/wp\/v2\/media?parent=3198"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/johncohn.org\/base\/wp-json\/wp\/v2\/categories?post=3198"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/johncohn.org\/base\/wp-json\/wp\/v2\/tags?post=3198"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}