{"id":2266,"date":"2025-06-17T11:47:36","date_gmt":"2025-06-17T17:47:36","guid":{"rendered":"https:\/\/albersheim.com\/wordpress\/?post_type=blog_post&p=2266"},"modified":"2025-06-17T11:47:38","modified_gmt":"2025-06-17T17:47:38","slug":"bubble-and-lobster-claw-nebulae","status":"publish","type":"blog_post","link":"https:\/\/albersheim.com\/wordpress\/blog-post\/bubble-and-lobster-claw-nebulae\/","title":{"rendered":"Bubble and Lobster Claw nebulae"},"content":{"rendered":"\n

The Bubble Nebula<\/strong>, aka SH2-162<\/strong> or NGC 7635<\/strong>, is an emission nebula in the constellation Cassiopeia, located on the left side of this image. The “bubble” is created by the stellar wind, a massive hot, 8.7 magnitude central star. The nebula is near a giant molecular cloud which contains the expansion of the bubble nebula while itself being excited by the hot central star, causing it to glow.<\/p>\n\n\n\n

The <\/em>Lobster Claw Nebula, SH2-157<\/em><\/strong>, is an emission nebula located about 11,000 light-years away in the constellation of Cassiopeia.  The red\/orange portions of the nebula are made up of strong HII regions. The predominantly yellow part of the nebula is a very large H II region. <\/em><\/p>\n\n\n\n

Also visible is the star cluster <\/em>NGC 7510<\/em><\/strong>, seen at the lower left of the image, below and left of the Bubble.<\/em><\/p>\n\n\n\n

Distance:<\/p>\n\n\n\n

The Bubble Nebula is between 7100 and 11,000 light-years (41750 billion to 64700 billion miles) from Earth. The Lobster Claw Nebula is about 11,000 light-years (64700 billion miles) from the Earth.<\/p>\n\n\n\n

Imaging:<\/p>\n\n\n\n

This image is one panel of a four-panel mosaic with each panel consisting of 20 sub-images at 5 minutes each (over 6.5 hours of imaging), calibrating the stack using 60 dark frames @ 300s, 60 bias frames, and 60 flat images. I stacked each panel using Siril, and post-processed with Siril until the stars became visible, then aligned and combined the panels into a single panorama image in Photoshop, then finished post-processing back in Siril, with final touches in PhotoShop. I\u2019m still working on the mosaic in Astro Pixel Processor, so selected this panel for a primer. Zoom in on the left side nebula to see the bubble, or what my wife calls a contact lens in space!<\/p>\n\n\n\n

Equipment:<\/p>\n\n\n\n

\u2022 Telescope: SVBony SV503 80ED 560mm, F\/7 Refractor with a 0.8 Reducer\/Flattener<\/p>\n\n\n\n

\u2022 Mount: SkyWatcher HEQ5 Pro<\/p>\n\n\n\n

\u2022 Camera: ZWO ASI2600 MC Pro<\/p>\n\n\n\n

\u2022 Filter: Optolong L-eXtreme(Bortle 6 dark sky area)<\/p>\n\n\n\n

\u2022 Guiding: ZWO ASI120mm Mini Monochrome Guide Camera with the ZWO 30mm f\/4 Guide Scope<\/p>\n\n\n\n

\u2022 Automation: ZWO ASIAir Mini<\/p>\n\n\n\n

\"Bubble
Bubble and Lobster Claw nebulae<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"

The Bubble Nebula, aka SH2-162 or NGC 7635, is an emission nebula in the constellation Cassiopeia, located on the left side of<\/p>\n

Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"tags":[],"blog-category":[],"class_list":["post-2266","blog_post","type-blog_post","status-publish","hentry"],"aioseo_notices":[],"jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/albersheim.com\/wordpress\/wp-json\/wp\/v2\/blog_post\/2266","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/albersheim.com\/wordpress\/wp-json\/wp\/v2\/blog_post"}],"about":[{"href":"https:\/\/albersheim.com\/wordpress\/wp-json\/wp\/v2\/types\/blog_post"}],"author":[{"embeddable":true,"href":"https:\/\/albersheim.com\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/albersheim.com\/wordpress\/wp-json\/wp\/v2\/comments?post=2266"}],"wp:attachment":[{"href":"https:\/\/albersheim.com\/wordpress\/wp-json\/wp\/v2\/media?parent=2266"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/albersheim.com\/wordpress\/wp-json\/wp\/v2\/tags?post=2266"},{"taxonomy":"blog-category","embeddable":true,"href":"https:\/\/albersheim.com\/wordpress\/wp-json\/wp\/v2\/blog-category?post=2266"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}