{"id":24339,"date":"2021-02-25T13:35:51","date_gmt":"2021-02-25T11:35:51","guid":{"rendered":"https:\/\/www.parcastronomicprades.cat\/?post_type=product&p=24339"},"modified":"2022-10-21T11:39:29","modified_gmt":"2022-10-21T10:39:29","slug":"galactic-cirri-across-the-double-star-cluster-in-perseus","status":"publish","type":"product","link":"https:\/\/www.parcastronomicprades.cat\/en\/espectacle\/galactic-cirri-across-the-double-star-cluster-in-perseus\/","title":{"rendered":"Galactic Cirri across the Double Star Cluster in Perseus"},"content":{"rendered":"
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Image Details<\/h4>\n<\/div>\n<\/div>\n<\/div>\n
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Two pane mosaic with a total exposure of 77h07\u2019<\/p>\n

Ha: (188+215) x 600\u2033 67h10\u2019<\/p>\n

L: (27+21) x 300\u2033 4h<\/p>\n

RGB: ((20\u00d73 + 20\u00d73)-1) x 180\u2033 5h57\u2019<\/p>\n

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Calibrated with 30 flats, 30 darks, 30 bias<\/p>\n

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Total exposure:\u00a0 77h07\u2019<\/p>\n

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Average darkness: 20.80 mag\/arcsec2<\/sup><\/p>\n

Image resolution: 1.74\u201d\/pixel<\/p><\/blockquote>\n<\/div>\n<\/div>\n<\/div>\n

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Equipment<\/h4>\n<\/div>\n<\/div>\n<\/div>\n
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FSQ85ED telescope<\/p>\n

Mesu200 mount<\/p>\n

ASI1600MM Pro camera with ZWO EFW 8 pos<\/p>\n

Guiding with ASI174MC and ZWO OAG<\/p>\n

Baader filters<\/p><\/blockquote>\n<\/div>\n<\/div>\n<\/div>\n

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Software<\/h4>\n<\/div>\n<\/div>\n<\/div>\n
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SGP, PHD2, APP, PIX.<\/p><\/blockquote>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Aleix Roig \u2013 Prades, Catalonia, Spain. February 2021.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

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In the line of sight of this magnificent concentration of stars, in the constellation of Perseus, we can see the complex structure of the interstellar dust from our own galaxy. Known as Galactic cirri, this faint reddish background is mainly composed of ionized hydrogen gas. The use of really deep sky images reveals a complex cloud of gas that has been rarely spotted by other telescopic images. While a very popular astronomical target, this pair of open star clusters, NGC 869 and NGC 884, can be easily detected, to the unaided eyes, from dark skies, showing a bluish glare due to the concentration of blue-white super-giant stars. The total mass of the complex reaches the 20,000 solar masses, including a very extensive halo of stars that surrounds both clusters. Based on the individual star ages of each cluster, both were born some 12.8 million years ago, which makes us consider them a young star formation region. On the right side of the image can be seen another open cluster, NGC 957, that is thought to have a common origin with the Double Cluster in Perseus. The triad lays some 7,000 light-years away from Earth.<\/p>\n

[icon name=\"hourglass-half\" prefix=\"fas\"] Once purchased, you have 24 hours to download the photo. You will receive an email with the download link.<\/p>\n

[icon name=\"image\" prefix=\"fas\"]\u200b HD image.<\/p>\n

[icon name=\"thumbs-up\" prefix=\"fas\"] Support my work. If you want to help me continue with my work, please feel free to buy, just for a few pennies, one or several of my images. The price does not reflect the amount of effort involved in each one of the images. Some of them implied weeks, months and even years of hard work. With your purchase I will be able to continue capturing photons of our amazing universe.<\/p>\n

[icon name=\"signature\" prefix=\"fas\"] The watermark, with the author’s original credit, cannot be removed in any of the uses. For a commercial use without this watermark please contact me for a detailed budget.<\/p>\n

[icon name=\"copyright\" prefix=\"fas\"] All images, videos and content of this website are copyrighted \u00a9 Aleix Roig Mateu. www.astrocat.info<\/a><\/p>\n","protected":false},"featured_media":24342,"template":"","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"product_brand":[],"product_cat":[98],"product_tag":[101],"giftcard-category":[],"class_list":{"0":"post-24339","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-astrocat-info","7":"product_tag-star-clusters","8":"desktop-align-left","9":"tablet-align-left","10":"mobile-align-left","12":"first","13":"instock","14":"taxable","15":"shipping-taxable","16":"purchasable","17":"product-type-variable"},"acf":[],"_links":{"self":[{"href":"https:\/\/www.parcastronomicprades.cat\/en\/wp-json\/wp\/v2\/product\/24339","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.parcastronomicprades.cat\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.parcastronomicprades.cat\/en\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.parcastronomicprades.cat\/en\/wp-json\/wp\/v2\/media\/24342"}],"wp:attachment":[{"href":"https:\/\/www.parcastronomicprades.cat\/en\/wp-json\/wp\/v2\/media?parent=24339"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.parcastronomicprades.cat\/en\/wp-json\/wp\/v2\/product_brand?post=24339"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.parcastronomicprades.cat\/en\/wp-json\/wp\/v2\/product_cat?post=24339"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.parcastronomicprades.cat\/en\/wp-json\/wp\/v2\/product_tag?post=24339"},{"taxonomy":"giftcard-category","embeddable":true,"href":"https:\/\/www.parcastronomicprades.cat\/en\/wp-json\/wp\/v2\/giftcard-category?post=24339"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}