{"id":854,"date":"2025-10-18T19:21:22","date_gmt":"2025-10-18T19:21:22","guid":{"rendered":"https:\/\/www.lonepeak.space\/?p=854"},"modified":"2025-10-18T19:21:22","modified_gmt":"2025-10-18T19:21:22","slug":"m45-and-ngc-1432","status":"publish","type":"post","link":"https:\/\/www.lonepeak.space\/index.php\/2025\/10\/18\/m45-and-ngc-1432\/","title":{"rendered":"M45 and NGC 1432"},"content":{"rendered":"\n
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Wikipedia Description: The Pleiades<\/strong>, also known as Seven Sisters<\/strong> and Messier 45<\/strong> (M45), is an asterism<\/a> of an open star cluster<\/a> containing young B-type stars<\/a> in the northwest of the constellation Taurus<\/a>. At a distance of about 444 light-years<\/a>, it is among the nearest star clusters<\/a> to Earth<\/a> and the nearest Messier object<\/a> to Earth, being the most obvious star cluster to the naked eye<\/a> in the night sky<\/a>. It contains the reflection nebulae NGC 1432<\/a>, an HII region<\/a>,[10]<\/a><\/sup> and NGC 1435<\/a>, known as the Merope Nebula. Around 2330 BC the Pleiades marked the vernal point<\/a>. Due to the brightness of its stars, the Pleiades is viewable from most areas on Earth, even in locations with significant light pollution<\/a>.[11]<\/a><\/sup><\/p>\n\n\n\n

The cluster is dominated by hot blue luminous stars<\/a> that have formed within the last 100 million years. Reflection nebulae<\/a> around the brightest stars were once thought to be leftover material from their formation, but are now considered likely to be an unrelated dust cloud in the interstellar medium<\/a> through which the stars are currently passing.[12]<\/a><\/sup> This dust cloud is estimated to be moving at a speed of approximately 18 km\/s relative to the stars in the cluster.[13]<\/a><\/sup><\/p>\n\n\n\n

Computer simulations have shown that the Pleiades were probably formed from a compact configuration that once resembled the Orion Nebula<\/a>.[14]<\/a><\/sup> Astronomers estimate that the cluster will survive for approximately another 250 million years, after which the clustering will be lost due to gravitational interactions with the galactic neighborhood.[15]<\/a><\/sup><\/p>\n\n\n\n

Together with the open star cluster of the Hyades<\/a>, the Pleiades form the Golden Gate of the Ecliptic<\/a>. The Pleiades have been said to “resemble a tiny dipper,” and should not be confused with the “Little Dipper<\/a>,” or Ursa Minor.[16]<\/a><\/sup><\/p>\n\n\n\n

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Wikipedia Link<\/a><\/p>\n\n\n\n

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Acquisition Details:<\/p>\n\n\n\n

Telescope<\/td>Takahashi TOA-130<\/td><\/tr>
Optics<\/td>Takahashi TOA-645 Flattener<\/td><\/tr>
Filter<\/td>None<\/td><\/tr>
Camera<\/td>ASI2600MC Pro OSC<\/td><\/tr>
Integration Time<\/td>6.3 hours<\/td><\/tr>
Subframes<\/td>190 x 120 seconds<\/td><\/tr>
Date<\/td>October 17, 2025<\/td><\/tr>
Location<\/td>Carlsbad, California<\/td><\/tr><\/tbody><\/table><\/figure>\n","protected":false},"excerpt":{"rendered":"

Wikipedia Description: The Pleiades, also known as Seven Sisters and Messier 45 (M45), is an asterism of an open star cluster containing young B-type stars in the northwest of the constellation Taurus. At a distance of about 444 light-years, it is among the nearest star clusters to Earth and the nearest Messier object to Earth, […]<\/p>\n","protected":false},"author":2,"featured_media":853,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16,11,12],"tags":[],"class_list":["post-854","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-everything","category-galaxies","category-nebulas"],"_links":{"self":[{"href":"https:\/\/www.lonepeak.space\/index.php\/wp-json\/wp\/v2\/posts\/854","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lonepeak.space\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lonepeak.space\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lonepeak.space\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lonepeak.space\/index.php\/wp-json\/wp\/v2\/comments?post=854"}],"version-history":[{"count":1,"href":"https:\/\/www.lonepeak.space\/index.php\/wp-json\/wp\/v2\/posts\/854\/revisions"}],"predecessor-version":[{"id":855,"href":"https:\/\/www.lonepeak.space\/index.php\/wp-json\/wp\/v2\/posts\/854\/revisions\/855"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.lonepeak.space\/index.php\/wp-json\/wp\/v2\/media\/853"}],"wp:attachment":[{"href":"https:\/\/www.lonepeak.space\/index.php\/wp-json\/wp\/v2\/media?parent=854"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lonepeak.space\/index.php\/wp-json\/wp\/v2\/categories?post=854"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lonepeak.space\/index.php\/wp-json\/wp\/v2\/tags?post=854"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}