{"id":7518,"date":"2026-04-11T12:20:39","date_gmt":"2026-04-11T10:20:39","guid":{"rendered":"https:\/\/kosmos-os.de\/?p=7518"},"modified":"2026-04-11T12:46:10","modified_gmt":"2026-04-11T10:46:10","slug":"expedition-ins-kometenreich","status":"publish","type":"post","link":"https:\/\/kosmos-os.de\/en\/expedition-ins-kometenreich\/","title":{"rendered":"Expedition into the Comet Kingdom"},"content":{"rendered":"

A short report on the comet hunt by Anja Drews and Carsten Debbe<\/p>\n\n\n\n


<\/p>\n\n\n\n

At 03:15 a.m., the silence of the night is torn by a sound... the alarm clock rings.
The weather forecast was not really good, but: If you don't dare, you don't win!
Only in the east, about two handbreadths above the horizon, is a strip of clear sky visible. So put on your clothes, put your equipment in the car, and off you go. You don't have to drive far, as a place with a suitable view and cardinal direction was scouted out days in advance. This time it is about 5 kilometers to Osterberg (near Hasbergen). A Seestar S30 and an S50 will be set up.<\/p>\n\n\n\n


At 04:30 a.m., the currently visible comet C\/2025 R3 (PanSTARRS) has crawled over the horizon, but is still invisible to us and the telescopes. <\/p>\n\n\n\n

The brightened sky over Osnabr\u00fcck is an obstacle. Anja's Seestar has problems with plate solving at the beginning. Due to the higher magnification, fewer stars can be seen on the sensor. My S30 has an easier time, because the larger chip and the shorter focal length mean that there are considerably more stars available for platesolving.<\/p>\n\n\n\n


<\/p>\n\n\n\n

\"\"
Anja in the \"redlight zone\"; Photo: Carsten Debbe<\/em><\/figcaption><\/figure>\n\n\n\n

But after a short time, Anja's S50 is also in the game.<\/p>\n\n\n\n


<\/p>\n\n\n\n

\"\"
The comet in the S50 after 4 min exposure; Photo: Anja Drews<\/em><\/figcaption><\/figure>\n\n\n\n
\"\"
Close -up of a S30 photo by Carsten Debbe<\/em><\/figcaption><\/figure>\n\n\n\n


After observing the comet, Carsten held on to the just rising globular cluster M4 in Scorpio and Anja finally captured the rising moon.<\/p>\n\n\n\n


On the way back we saw that the whole thing took place at about +1.5\u00b0 Celsius. We didn't even notice...<\/p>\n\n\n\n

<\/p>\n\n\n\n


<\/p>\n\n\n\n

<\/p>\n\n\n\n

Additional infos<\/p>\n\n\n\n

Comet classification: https:\/\/kosmos-os.de\/der-komet-c2023-a3-tsuchinshan-atlas\/<\/a><\/p>\n\n\n\n

Comet C\/2025 R3 (PanSTARRS): https:\/\/en.wikipedia.org\/wiki\/C\/2025_R3_(PanSTARRS)<\/a><\/p>\n\n\n\n

<\/p>","protected":false},"excerpt":{"rendered":"

At 03:15 a.m., the silence of the night is torn by a sound... the alarm clock rings.
\nThe weather forecast was not really good, but: If you don't dare, you don't win!
\nNur im Osten, etwa zwei Handbreit \u00fcber dem Horizont, ist ein Streifen klarer Himmel zu erkennen. Also in die Klamotten, Ausr\u00fcstung ins Auto, und los geht\u2019s. <\/p>","protected":false},"author":1,"featured_media":7523,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_eb_attr":"","footnotes":""},"categories":[242,70],"tags":[],"class_list":["post-7518","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-kometen","category-sonnensystem"],"_links":{"self":[{"href":"https:\/\/kosmos-os.de\/en\/wp-json\/wp\/v2\/posts\/7518","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kosmos-os.de\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kosmos-os.de\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kosmos-os.de\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kosmos-os.de\/en\/wp-json\/wp\/v2\/comments?post=7518"}],"version-history":[{"count":10,"href":"https:\/\/kosmos-os.de\/en\/wp-json\/wp\/v2\/posts\/7518\/revisions"}],"predecessor-version":[{"id":7538,"href":"https:\/\/kosmos-os.de\/en\/wp-json\/wp\/v2\/posts\/7518\/revisions\/7538"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/kosmos-os.de\/en\/wp-json\/wp\/v2\/media\/7523"}],"wp:attachment":[{"href":"https:\/\/kosmos-os.de\/en\/wp-json\/wp\/v2\/media?parent=7518"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kosmos-os.de\/en\/wp-json\/wp\/v2\/categories?post=7518"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kosmos-os.de\/en\/wp-json\/wp\/v2\/tags?post=7518"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}