{"id":2159,"date":"2024-01-30T21:48:10","date_gmt":"2024-01-31T02:48:10","guid":{"rendered":"https:\/\/mvas.org\/mvas_wp\/?p=2159"},"modified":"2024-01-30T21:48:10","modified_gmt":"2024-01-31T02:48:10","slug":"ngc-2903-spiral-galaxy-in-leo-4","status":"publish","type":"post","link":"https:\/\/mvas.org\/?p=2159","title":{"rendered":"NGC 2903 \u2013 Spiral Galaxy in Leo"},"content":{"rendered":"\n<figure class=\"wp-block-image size-medium\"><a href=\"https:\/\/i0.wp.com\/mvas.org\/mvas_wp\/wp-content\/uploads\/2024\/01\/NGC-2903-1-4-2024-1j.jpg?ssl=1\" target=\"_blank\" rel=\"noreferrer noopener\"><img data-recalc-dims=\"1\" decoding=\"async\" width=\"512\" height=\"384\" loading=\"lazy\" src=\"https:\/\/i0.wp.com\/mvas.org\/mvas_wp\/wp-content\/uploads\/2024\/01\/NGC-2903-1-4-2024-1j-512x384.jpg?resize=512%2C384&#038;ssl=1\" alt=\"\" class=\"wp-image-2160\" srcset=\"https:\/\/i0.wp.com\/mvas.org\/wp-content\/uploads\/2024\/01\/NGC-2903-1-4-2024-1j.jpg?resize=512%2C384&amp;ssl=1 512w, https:\/\/i0.wp.com\/mvas.org\/wp-content\/uploads\/2024\/01\/NGC-2903-1-4-2024-1j.jpg?resize=1024%2C768&amp;ssl=1 1024w, https:\/\/i0.wp.com\/mvas.org\/wp-content\/uploads\/2024\/01\/NGC-2903-1-4-2024-1j.jpg?resize=150%2C113&amp;ssl=1 150w, https:\/\/i0.wp.com\/mvas.org\/wp-content\/uploads\/2024\/01\/NGC-2903-1-4-2024-1j.jpg?resize=768%2C576&amp;ssl=1 768w, https:\/\/i0.wp.com\/mvas.org\/wp-content\/uploads\/2024\/01\/NGC-2903-1-4-2024-1j.jpg?w=1200&amp;ssl=1 1200w\" sizes=\"auto, (max-width: 512px) 100vw, 512px\" \/><\/a><\/figure>\n\n\n<p class=\"western\">Telescope: Astro-Tech 8\u201d f\/8 Ritchey-Chretien, Orion Atlas EQ-G<\/p>\n<p class=\"western\">Camera: <span style=\"color: #000000;\"><span style=\"font-family: Cambria, serif;\"><span style=\"font-size: medium;\"><span lang=\"en-US\">Canon EOS Ra<\/span><\/span><\/span><\/span>, Baader Mk III MPCC, <span style=\"color: #000000;\"><span style=\"font-family: Cambria, serif;\"><span style=\"font-size: medium;\"><span lang=\"en-US\">GSO IR Blocking<\/span><\/span><\/span><\/span> Filter<\/p>\n<p class=\"western\">Guide scope: Astro-Tech 60mm, <span style=\"color: #000000;\"><span style=\"font-family: Cambria, serif;\"><span style=\"font-size: medium;\"><span lang=\"en-US\">ZWO ASI120MM mini<\/span><\/span><\/span><\/span>, PHD2<\/p>\n<p class=\"western\">Exposure: 48x60sec, gain ISO 1600 saved as RAW, dithered every 2 images<\/p>\n<p class=\"western\">Darks: Internal<\/p>\n<p class=\"western\">Flats: 64&#215;1\/250sec, Tee shirt flats taken at dusk<\/p>\n<p class=\"western\">Average Light Pollution: Red zone, Bortle 8, fai<span style=\"color: #000000;\"><span style=\"font-family: Cambria, serif;\"><span style=\"font-size: medium;\"><span lang=\"en-US\">r<\/span><\/span><\/span><\/span> transparency<\/p>\n<p class=\"western\">Lensed Sky Quality Meter: 18.5<\/p>\n<p class=\"western\">Stacking: <span style=\"color: #000000;\"><span style=\"font-family: Cambria, serif;\"><span style=\"font-size: medium;\"><span lang=\"en-US\">Average, 1 sigma clip<\/span><\/span><\/span><\/span><\/p>\n<p class=\"western\">White Balance: Nebulosity Automatic<\/p>\n<p class=\"western\">Software: Backyard EOS, Deep Sky Stacker, Nebulosity, Photoshop<\/p>\n<p class=\"western\"><span style=\"color: #222222;\"><span style=\"font-family: Cambria, serif;\">NGC 2903 is a fairly bright (Mv 9.0) galaxy located just south of the head of Leo (the Lion). <\/span><\/span><span style=\"color: #222222;\"><span style=\"font-family: Cambria, serif;\">The galaxy is 20.5 million light years away and is 80,000 light years across, making it a little slammer than the Milky Way. <\/span><\/span><span style=\"color: #222222;\"><span style=\"font-family: Cambria, serif;\">I first spotted this galaxy while star-hopping around Leo and Cancer. It is an easy target in an 8\u201d scope where I was able to clearly see the core and bar. The sweeping arms are gorgeous in the photograph, but they are not visible from my backyard.<\/span><\/span><\/p>\n<p class=\"western\"><span style=\"color: #222222;\"><span style=\"font-family: Cambria, serif;\"><span style=\"font-size: medium;\"><span lang=\"en-US\">NGC 2903<\/span><\/span><\/span><\/span><span style=\"color: #222222;\"><span style=\"font-family: Cambria, serif;\"><span style=\"font-size: medium;\"><span lang=\"en-US\"> is currently well-placed <\/span><\/span><\/span><\/span><span style=\"color: #222222;\"><span style=\"font-family: Cambria, serif;\"><span style=\"font-size: medium;\"><span lang=\"en-US\">rising <\/span><\/span><\/span><\/span><span style=\"color: #222222;\"><span style=\"font-family: Cambria, serif;\"><span style=\"font-size: medium;\"><span lang=\"en-US\">in the east during the early evening.<\/span><\/span><\/span><\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>Telescope: Astro-Tech 8\u201d f\/8 Ritchey-Chretien, Orion Atlas EQ-G Camera: Canon EOS Ra, Baader Mk III MPCC, GSO IR Blocking Filter Guide scope: Astro-Tech 60mm, ZWO ASI120MM mini, PHD2 Exposure: 48x60sec, gain ISO 1600 saved as RAW, dithered every 2 images Darks: Internal Flats: 64&#215;1\/250sec, Tee shirt flats taken at dusk Average Light Pollution: Red zone, [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","pgc_sgb_lightbox_settings":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[15],"tags":[],"class_list":["post-2159","post","type-post","status-publish","format-standard","hentry","category-forums-deepsky-imaging","entry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - 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