{"id":33332,"date":"2022-12-02T21:28:23","date_gmt":"2022-12-03T02:28:23","guid":{"rendered":"https:\/\/wading-in.net\/walkabout\/?p=33332"},"modified":"2022-12-02T21:28:23","modified_gmt":"2022-12-03T02:28:23","slug":"living-in-the-past-i","status":"publish","type":"post","link":"https:\/\/wading-in.net\/walkabout\/2022\/12\/living-in-the-past-i\/","title":{"rendered":"Living in the past I"},"content":{"rendered":"

I noticed in passing that the post count was at 2,470 at the end of last month, which meant that I could reach 2,500 posts at the end of the year – if I did better than I have been. I wasn’t worried about it – I’d prefer to post regarding content rather than arbitrary numbers – but then this afternoon I realized how I could meet this goal and<\/em> have a bit of content in the winter dead season, and so we have a new topic, appropriately numbered with Roman numerals because it’s clarssy (and stupid.) This means we’ll take a look at images from past posts that I feel like revisiting, which does not inflate the uploaded images artificially nor require scanning or editing or any of that yaya. Almost effortless. What’s not to like?<\/p>\n

\"multiple
I’m thinking I’ll do this in chronological order, so we’re going way back to the early days with the second post<\/a>, since the first had no images. What you see here is a slide (well, the digital scan of one,) and this was done in-camera, a multiple exposure because film cameras can do that, of the starfield overhead one night. I’m not absolutely sure of the intervals but I think they’re 45 seconds apart. Worse, I’m not sure exactly where I was aiming or even what lens was used, so I can’t tell you which stars these are. Which is unfortunate, because right there in the center is something else, a singular point that was either captured in just one of the exposures, or wasn’t moving with the stars.<\/p>\n

The possibility exists that this was a geostationary satellite, always over one point on the Earth so it was keeping pace and rotating with the planet (while the stars weren’t.) Or it might have been only a momentary light without moving much – or simply a schmutz<\/em> on the film. I don’t know – I’ve reviewed the starfields in Stellarium<\/a> countless times since then, trying to pin down where I was aimed, and never yet plotted it. However, you can get a rough estimate of the distance to the plane of the ecliptic because of the flattening curves:<\/strong> they become straight on the plane, essentially straight out from the ‘waist’ of the Earth. But I would think a geosat would have to be there too, and this is not – it’s some degree North of that.<\/p>\n

So the mystery lives on. But the image is still pretty slick, and surprisingly colorful, so we’ll concentrate on that.<\/p>\n","protected":false},"excerpt":{"rendered":"

I noticed in passing that the post count was at 2,470 at the end of last month, which meant that I could reach 2,500 posts at the end of the year – if I did better than I have been. I wasn’t worried about it – I’d prefer to post regarding content rather than arbitrary […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14,3],"tags":[674,2094,189,6597],"class_list":["post-33332","post","type-post","status-publish","format-standard","hentry","category-astronomy","category-photo","tag-multiple-exposures","tag-night-exposures","tag-night-sky-photography","tag-time-exposure"],"_links":{"self":[{"href":"https:\/\/wading-in.net\/walkabout\/wp-json\/wp\/v2\/posts\/33332","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wading-in.net\/walkabout\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wading-in.net\/walkabout\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wading-in.net\/walkabout\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wading-in.net\/walkabout\/wp-json\/wp\/v2\/comments?post=33332"}],"version-history":[{"count":0,"href":"https:\/\/wading-in.net\/walkabout\/wp-json\/wp\/v2\/posts\/33332\/revisions"}],"wp:attachment":[{"href":"https:\/\/wading-in.net\/walkabout\/wp-json\/wp\/v2\/media?parent=33332"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wading-in.net\/walkabout\/wp-json\/wp\/v2\/categories?post=33332"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wading-in.net\/walkabout\/wp-json\/wp\/v2\/tags?post=33332"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}