{"id":8331,"date":"2007-01-10T23:47:00","date_gmt":"2007-01-10T23:47:00","guid":{"rendered":"https:\/\/groupeastronomiespa.be\/astrogas\/bis-repetita-placent\/"},"modified":"2025-07-14T16:12:40","modified_gmt":"2025-07-14T14:12:40","slug":"bis-repetita-placent","status":"publish","type":"post","link":"https:\/\/groupeastronomiespa.be\/astrogas\/bis-repetita-placent\/","title":{"rendered":"Bis repetita placent"},"content":{"rendered":"

After my announcement yesterday afternoon, many comet hunters gathered outside the Skybar. The sky was almost cloud-free at the right place, so the view of the comet was splendid. The comet was definitely brighter, at least -2.5 mag, and its tail much longer than the day before.
\nA visual observers’ group was set up by G. Tomezzoli, using 10×42 and 20×60 binoculars. Another group formed around J. Marot-Lassauzaie and me, with a Nikon D100, a 550\/6.3 Maksutov (see left-hand image) and a Meade ETX90 (1260\/14, see right-hand image), also used visually at x48.
\nAn Iridium flare in a tiny clearing and a brief tour of winter constellations completed this very successful comet & star party.<\/p>\n

Forecast:
\n– comet brightness:
\nJan. 10.92, -2.5*, & 1′ (J. Bortle, Stormville, NY, U.S.A., naked eye, 1-degree tail);
\n 10.68, -2.3*, — (W. Hasubick, Buchloe, Germany, naked eye; comp. w\/ Venus);
\n 10.68, -3.2*, 2′ (T. Scarmato, Calabria, Italy, 7×50 binoculars; alt. 5 deg; 2-deg tail);
\n 10.66, -2.7:*, 5′ (K. Hornoch, Krasensko, Czech Republic, 10×50 binoculars; 2-deg tail in p.a. 25 deg; very low, dusk);
\nNobody knows about the possible evolution. I guess -4 mag and a 4-deg tail by the end of the week: look for the comet whenever a clearing comes at sunset.
\n– weather tonight: 95% cloud cover, stormy with 70 km\/h wind gusts; please come to the Skybar on your own. Tomorrow: 100% cloud cover, rainy. Saturday: 50% cloud cover – maybe the comet’s tail could still be visible.<\/p>\n

Other information sources:
\nSpaceWeather, see below.
\nhttp:\/\/www.aerith.net\/comet\/weekly\/current.html<\/a> (now almost daily; the Jan 11 issue came out yesterday for us Europeans)
\nhttp:\/\/www.cidehom.com\/astronomie.php?_a_id=363<\/a> (note hesitating spelling for the comet, and the repeated efforts of the photographer to sell his book)<\/p>\n

Jean-Luc Dighaye<\/p>\n

\"\"<\/a><\/p>\n\n\n

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\n Veuillez voter<\/span>\n <\/div>\n <\/div>\n","protected":false},"excerpt":{"rendered":"

After my announcement yesterday afternoon, many comet hunters gathered outside the Skybar. The sky was almost cloud-free at the right place, so the view of the comet was splendid. The comet was definitely brighter, at least -2.5 mag, and its tail much longer than the day before. A visual observers’ group was set up by […]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[2],"tags":[],"class_list":["post-8331","post","type-post","status-publish","format-standard","hentry","category-astrophotos"],"_links":{"self":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/8331","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/users\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/comments?post=8331"}],"version-history":[{"count":2,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/8331\/revisions"}],"predecessor-version":[{"id":16191,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/posts\/8331\/revisions\/16191"}],"wp:attachment":[{"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/media?parent=8331"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/categories?post=8331"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/groupeastronomiespa.be\/astrogas\/wp-json\/wp\/v2\/tags?post=8331"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}