wimvb Posted April 14, 2017 Share Posted April 14, 2017 NGC 7479 is a barred spiral galaxy in the constellation of Pegasus. The data for this image is from the 2 m f/10 Liverpool Telescope in La Palma, Canary Islands 20 x 90 seconds RGB (sdss-r, Bessel-V, Bessel-B), total integration time: 30 minutes / channel Processed in PixInsight. The data was extremely strong in red, and weak in blue. I started with integrating all colour information I could find in the archive, but the blue showed some anomalies. I kept only the 90 s data files. This is basically the full frame from the camera (2000 x 2000 px, 15 micrometer pixelsize). Link to comment Share on other sites More sharing options...
andyo Posted April 14, 2017 Share Posted April 14, 2017 Very nice shot loads of fuzzies in there also . What is the bue figure eight on the right star is that a reflection anomalie? Link to comment Share on other sites More sharing options...
wimvb Posted April 14, 2017 Author Share Posted April 14, 2017 That's a reflection. I didn't find it an intrusion, so left it in. Link to comment Share on other sites More sharing options...
andyo Posted April 14, 2017 Share Posted April 14, 2017 Certainly not an intrusion I didn't realise these big professional rigs got reflections like this Link to comment Share on other sites More sharing options...
astro mick Posted April 14, 2017 Share Posted April 14, 2017 Very nice indeed. Mick. Link to comment Share on other sites More sharing options...
Atreta Posted April 15, 2017 Share Posted April 15, 2017 Very nice, wim. Link to comment Share on other sites More sharing options...
PatrickGilliland Posted April 15, 2017 Share Posted April 15, 2017 Nice Wim - so great data available at LT - though as you say some channels vary significantly. Link to comment Share on other sites More sharing options...
wimvb Posted April 15, 2017 Author Share Posted April 15, 2017 12 hours ago, andyo said: Certainly not an intrusion I didn't realise these big professional rigs got reflections like this 3 minutes ago, PatrickGilliland said: Nice Wim - so great data available at LT - though as you say some channels vary significantly. Thanks, all. Even with professional data, there's no free ride. But otoh, where's the fun in just combining channels? In every new image, there should be something new to learn. Link to comment Share on other sites More sharing options...
PatrickGilliland Posted April 15, 2017 Share Posted April 15, 2017 5 minutes ago, wimvb said: Thanks, all. Even with professional data, there's no free ride. But otoh, where's the fun in just combining channels? In every new image, there should be something new to learn. That is the challenge - the same does not really exist! We are constantly improvising Link to comment Share on other sites More sharing options...
toxic Posted April 16, 2017 Share Posted April 16, 2017 lovely image Wim Link to comment Share on other sites More sharing options...
wimvb Posted April 16, 2017 Author Share Posted April 16, 2017 Thanks Link to comment Share on other sites More sharing options...
gorann Posted April 17, 2017 Share Posted April 17, 2017 Great result Wim! Just out of curiosity: did you run any sharpening / deconvolotion on the image or is this the way it came out? Link to comment Share on other sites More sharing options...
wimvb Posted April 17, 2017 Author Share Posted April 17, 2017 2 hours ago, gorann said: Great result Wim! Just out of curiosity: did you run any sharpening / deconvolotion on the image or is this the way it came out? Thanks. I did use deconvolution on this image. I usually do deconvolution to tighten the stars somewhat. With this data it is also possible to sharpen the galaxy details a bit, and squeeze a little more resolution out of the data. But I try not to overdo it too much. Link to comment Share on other sites More sharing options...
gorann Posted April 17, 2017 Share Posted April 17, 2017 4 hours ago, wimvb said: Thanks. I did use deconvolution on this image. I usually do deconvolution to tighten the stars somewhat. With this data it is also possible to sharpen the galaxy details a bit, and squeeze a little more resolution out of the data. But I try not to overdo it too much. Have a go at sharpen the galaxy a bit just to see how it looks Link to comment Share on other sites More sharing options...
wimvb Posted April 17, 2017 Author Share Posted April 17, 2017 2 hours ago, gorann said: Have a go at sharpen the galaxy a bit just to see how it looks Your wish is my command. More aggressive deconvolution, a bit beyond what I would normally do. (Or I would have to spend much more time on creating a better star mask.) Slight sharpening of wavelet layers 3 and 4 at the end. Link to comment Share on other sites More sharing options...
gorann Posted April 18, 2017 Share Posted April 18, 2017 I like it Wim! I would go even a bit further with some high pass filter and a slight increase in saturation of red/magenta and yellow - but that is me. In any case, playing with curves on your image I noticed that there are more faint stuff in there that you can bring out (longer galaxy arms and numerous small faint fuzzies). Link to comment Share on other sites More sharing options...
Yoddha Posted April 19, 2017 Share Posted April 19, 2017 Top class image! Link to comment Share on other sites More sharing options...
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