{"id":282,"date":"2026-03-25T20:28:28","date_gmt":"2026-03-25T20:28:28","guid":{"rendered":"https:\/\/cosmosimager.com\/staging\/3153\/?page_id=282"},"modified":"2026-03-25T20:28:42","modified_gmt":"2026-03-25T20:28:42","slug":"ngc-3184-the-little-pinwheel-galaxy","status":"publish","type":"page","link":"https:\/\/cosmosimager.com\/staging\/3153\/ngc-3184-the-little-pinwheel-galaxy\/","title":{"rendered":"NGC 3184 – The Little Pinwheel Galaxy"},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n

NGC 3184, often referred to as the Little Pinwheel Galaxy<\/em>, is a face-on spiral galaxy located in the constellation Ursa Major at an approximate distance of 40 million light-years. Its nearly symmetrical spiral structure is characterized by well-defined arms containing numerous H II regions, where active star formation produces localized H-alpha emission embedded within a broader continuum of starlight. The galaxy\u2019s low inclination provides an unobstructed view of its internal structure, allowing individual star-forming complexes to be resolved across the disk.<\/p>\n\n\n\n

This field also includes several prominent foreground stars within the Milky Way, most notably the bright orange star near the lower right of the frame and a compact grouping of blue stars in the lower left. These stars provide strong color contrast and serve as a reminder of the line-of-sight depth differences between local stellar populations and this distant extragalactic target. Numerous faint background galaxies are also visible throughout the field, adding additional context to the deep exposure.<\/p>\n\n\n\n

This image was created using a combination of broadband LRGB data and narrowband H-alpha acquired from Arnold, CA. The data were collected between January 5, 2025 and February 20, 2025, with a total integration time of 54.5 hours . Continuum subtraction was applied to the H-alpha channel to isolate true emission regions by removing the underlying stellar continuum, allowing enhanced mapping of discrete star-forming regions within the spiral arms. The final image integrates this emission data with broadband luminance and RGB color to preserve natural galaxy structure while highlighting areas of active star formation.<\/p>\n","protected":false},"excerpt":{"rendered":"

NGC 3184, often referred to as the Little Pinwheel Galaxy, is a face-on spiral galaxy located in the constellation Ursa Major at an approximate distance of 40 million light-years. Its nearly symmetrical spiral structure is characterized by well-defined arms containing numerous H II regions, where active star formation produces localized H-alpha emission embedded within a […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"nf_dc_page":"","om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-282","page","type-page","status-publish","hentry"],"yoast_head":"\nNGC 3184 - The Little Pinwheel Galaxy - William D Brown Astrophotography<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/cosmosimager.com\/staging\/3153\/ngc-3184-the-little-pinwheel-galaxy\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"NGC 3184 - The Little Pinwheel Galaxy - William D Brown Astrophotography\" \/>\n<meta property=\"og:description\" content=\"NGC 3184, often referred to as the Little Pinwheel Galaxy, is a face-on spiral galaxy located in the constellation Ursa Major at an approximate distance of 40 million light-years. 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