This is particularly useful if you\u2019re photographing deep-sky images with an altaz mount, which you can read about in our guide How to do deep-sky astrophotography with an altaz mount<\/em><\/a>.<\/p>\n Follow our guide below and learn how to use APP to iron out the imperfections in your Go-To altaz image captures.<\/span><\/p>\n For more help with processing, read our guides to astrophotography image processing<\/a> and deep-sky image processing<\/a>.<\/strong><\/em><\/p>\n Open Astro Pixel Processor<\/span><\/p>\n Select the tab marked 1) Load<\/span><\/p>\n Navigate to your working folder that contains all of your image files<\/span><\/p>\n Select the light frames of your target and click \u2018Open\u2019 to load them<\/span><\/p>\n If you have dark and flat frames, select and add those to the selection too<\/span><\/p>\n Give your image an appropriate name for when the processing run has finished (you can change it at the end if you wish)<\/span><\/p>\n Then check tab 2) Calibrate and tab 3) Analyse stars<\/span><\/p>\n These can usually be left at their default values unless you feel inquisitive and want to test out some adjustments.<\/span><\/p>\n Select tab 4) Register to bring up its window<\/span><\/p>\n \u2018Quadrilaterals\u2019 is the default setting for the pattern recognition descriptors, but if you have 250 stars or less choose \u2018Triangles\u2019<\/span><\/p>\n The software has a useful pop-up window with lots of information that appears and helps to guide you throughout<\/span><\/p>\n Open tab 5) Normalise and ensure \u2018Neutralise background\u2019 is unticked<\/span><\/p>\n Click on tab 6) Integrate<\/span><\/p>\n The default settings work well and there are plenty of options for experienced imagers to play with<\/span><\/p>\n Scroll to the bottom and click \u2018Integrate\u2019<\/span><\/p>\n This then runs through all the previous tabs and processes your image<\/span><\/p>\n A short beep announces that the integration is complete and the above screen will appear with a stacked, aligned and processed image displayed<\/span><\/p>\n On the right, select \u2018Neutralise background\u2019 and there are a range of options to adjust the image; the default settings often give good results<\/span><\/p>\n A final set of tools is provided to process the image further; those that remove light pollution, calibrate background and calibrate star colours are particularly useful, and experienced imagers have plenty of options to experiment with<\/span><\/p>\n Once done, save your image ready to import into your favourite photo-editing program.\u00a0<\/span><\/span><\/p>\n This guide originally appeared in the November 2022 issue of <\/strong><\/em>BBC Sky at Night Magazine<\/strong>.<\/strong><\/em><\/p> <\/body><\/html>\n By Paul Money Published: Thursday, 05 January 2023 at 12:00 am In this quick guide, we\u2019ll show you step-by-step how to stack and derotate your astro images with the Astro Pixel Processor app. This is particularly useful if you\u2019re photographing deep-sky images with an altaz mount, which you can read about in our guide How […]<\/p>\n","protected":false},"author":24,"featured_media":40026,"template":"","categories":[34],"acf":{"readingTimeMinutes":"3"},"uagb_featured_image_src":{"full":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2023\/01\/how-to-stack-and-derotate-images-with-astro-pixel-processor.jpg",1298,800,false],"thumbnail":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2023\/01\/how-to-stack-and-derotate-images-with-astro-pixel-processor-150x150.jpg",150,150,true],"medium":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2023\/01\/how-to-stack-and-derotate-images-with-astro-pixel-processor-300x185.jpg",300,185,true],"medium_large":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2023\/01\/how-to-stack-and-derotate-images-with-astro-pixel-processor-768x473.jpg",768,473,true],"large":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2023\/01\/how-to-stack-and-derotate-images-with-astro-pixel-processor-1024x631.jpg",800,493,true],"1536x1536":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2023\/01\/how-to-stack-and-derotate-images-with-astro-pixel-processor.jpg",1298,800,false],"2048x2048":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2023\/01\/how-to-stack-and-derotate-images-with-astro-pixel-processor.jpg",1298,800,false]},"uagb_author_info":{"display_name":"importmanagerhub@sprylab.com","author_link":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/author\/importmanagerhubsprylab-com\/"},"uagb_comment_info":0,"uagb_excerpt":"By Paul Money Published: Thursday, 05 January 2023 at 12:00 am In this quick guide, we\u2019ll show you step-by-step how to stack and derotate your astro images with the Astro Pixel Processor app. This is particularly useful if you\u2019re photographing deep-sky images with an altaz mount, which you can read about in our guide How…","_links":{"self":[{"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/rss_feed\/40025"}],"collection":[{"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/rss_feed"}],"about":[{"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/types\/rss_feed"}],"author":[{"embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/users\/24"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/media\/40026"}],"wp:attachment":[{"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/media?parent=40025"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/categories?post=40025"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Derotating with Astro Pixel Processor, step-by-step<\/strong><\/h2>\n
Step 1<\/strong><\/h3>\n
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<\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/picture><\/div>\nStep 2<\/strong><\/h3>\n
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<\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/picture><\/div>\nStep 3<\/strong><\/h3>\n
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<\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/picture><\/div>\nStep 4<\/strong><\/h3>\n
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<\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/picture><\/div>\nStep 5<\/strong><\/h3>\n
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<\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/picture><\/div>\nStep 6<\/strong><\/h3>\n
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