\u2730 * Matthew Knight (Lowell Obs.) measured the comet<\/strong> with the STEREO A spacecraft's \u2730 \n \t* Karl Battams (NRL) provides further <\/strong>analysis of Knight's photometry: Med andra ord kan vi räkna med en spektakulär kometshow framöver, även om kometen – ifall den överlever!!! – naturligtvis kommer att avta i ljusstyrka ganska snabbt.<\/p>\n SOHO:s bildbevis från igår:<\/p>\n Plus:<\/p>\n STEREO-systemet dokumenterade också 27.11 denna upptagning:<\/p>\n Och för jämförelsens skull – här är den ryska upptäckarbilden från i september i fjor, då kometen låg drygt sex jorddistanser från solen:<\/p>\n Rekommenderar också vår svenska ISON-sajt, alltså Chalmers. <\/a><\/p>\n Det är här det bl a diskuteras i vilken mån kometen brutits itu.<\/p>\n","protected":false},"excerpt":{"rendered":" Dagen D för ISON-kometen I dag (28.11.2013) får det bära eller brista för ISON-kometen, som nu gör ett strykarvarv nära solen. Mitt under ISON-dramatiken fick vi tekniska problem med våra hemsidor – Murphys lag!?! – men det är inget mot den kris som ISON-kometen går igenom. Tecken (radioastronomiska) tyder på att den gått itu i… L\u00e4s mer »Nr 136 2013<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"rop_custom_images_group":[],"rop_custom_messages_group":[],"rop_publish_now":"initial","rop_publish_now_accounts":[],"rop_publish_now_history":[],"rop_publish_now_status":"pending","neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"categories":[3],"tags":[],"_links":{"self":[{"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/posts\/46690"}],"collection":[{"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/comments?post=46690"}],"version-history":[{"count":18,"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/posts\/46690\/revisions"}],"predecessor-version":[{"id":46711,"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/posts\/46690\/revisions\/46711"}],"wp:attachment":[{"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/media?parent=46690"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/categories?post=46690"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/tags?post=46690"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n\t<\/span><\/p>\n
\n\tHI-1 instrument:
\n\t”Comet ISON has brightened dramatically since it entered the SOHO C3 (note that
\n\tC3 is the name of the telescope, it is not referring to the molecule) field of
\n\tview yesterday. In the clear filter images it had an apparent V magnitude of
\n\t2.5 on Nov 27.05 when it entered the field of view and has increased steadily
\n\tin brightness to mag 0.5 on Nov 27.54. Note that it began saturating the
\n\tdetector soon after entering the C3 field of view and I am employing a
\n\tcorrection that I developed for C\/2011 W3 Lovejoy. This brightening behavior is
\n\tsimilar to typical brightening by Kreutz comets in the SOHO fields of view.”<\/p>\n
\n\t<\/span><\/p>\n
\n\t”Based on the photometry, and the visual appearance of the comet in the SOHO
\n\tLASCO data, we have updated the Current Status page to tell observers to plan
\n\tfor a negative magnitude object. A conservative estimate would be -1, but -3 or
\n\t-4 is certainly reasonable at this point.”<\/p>\n![\"\"](\"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2013\/11\/comet-ison-SOHO-11-27-2013-3.jpg\" "\\"Bildk\u00e4lla:")
<\/a><\/p>\n![\"\"](\"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2013\/11\/lasco_ison_saturation-300x244.jpg\" "\\"\\"")
<\/a><\/p>\n![\"\"](\"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2013\/11\/BaGo-aWCAAAnY69.jpg\" "\\"Bildk\u00e4lla:")
<\/a><\/p>\n![\"\"](\"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2013\/11\/ison_discovery.jpg\" "\\"\\"")
<\/a><\/p>\n