Popular Post +Derbyshire Dave Posted November 11, 2023 Popular Post Share Posted November 11, 2023 The Wizard Nebula NGC7380 in bicolor. Taken last night, 36 x 300s in Ha, 29 x 300 in Oiii. Ha allocated to the green channel, Oiii to Blue and green channels. William Optics GT81 scope, ZWO 1833mm mono camera, zwo filters, losmandy GM8 mount. Stacked and processed in PixInsight, finished off in Photoshop. Click and click again in Flickr for better resolution. +RonC, +Streetbob, Bottletopburly and 9 others 12 Link to comment Share on other sites More sharing options...
Magellan Boy Posted November 11, 2023 Share Posted November 11, 2023 Really stands out against space there Dave. Looking at the shape, maybe it should be called the Slug Nebula? +Derbyshire Dave 1 Link to comment Share on other sites More sharing options...
+Glafnazur Posted November 11, 2023 Share Posted November 11, 2023 I like that Dave, really good. The wider field of view shows it very well. 👍 +Derbyshire Dave 1 Link to comment Share on other sites More sharing options...
+Graham Posted November 11, 2023 Share Posted November 11, 2023 That is a great image Dave. +Derbyshire Dave 1 Link to comment Share on other sites More sharing options...
Clive Posted November 11, 2023 Share Posted November 11, 2023 A great image and 'natural' colours but I'm a little confused (not difficult 😊). If Ha -> green and O3 -> green + blue where did the red come from? +Derbyshire Dave 1 Link to comment Share on other sites More sharing options...
+Derbyshire Dave Posted November 11, 2023 Author Share Posted November 11, 2023 1 hour ago, Clive said: A great image and 'natural' colours but I'm a little confused (not difficult 😊). If Ha -> green and O3 -> green + blue where did the red come from? Clive, I'm an idiot, sorry. Ha allocated to the red channel, Oiii to blue and green. Hydrogen is the most abundant element, which is why the image appears mainly red. I'm waiting to get some Sii. Once I get that, I will allocate according to the Hubble Palette. When you do that, the most abundant hydrogen gets allocated to green, Oiii to blue and Sii to red. This is the way that NASA tries to stretch out the relatively small difference in wavelengths to produce very colourful images. That is why it is known as false colour....mind you everyone should get similar results. Link to comment Share on other sites More sharing options...
newtyng5 Posted November 11, 2023 Share Posted November 11, 2023 Love how black the background is. Great image! +Derbyshire Dave 1 Link to comment Share on other sites More sharing options...
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