The first thing you do with astrophotography image processing is to calibrate your images with flats, darks and dark flats. This process should remove dust donuts, vignetting and other issues you have might in the optical train.
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The Horsehead Nebula (1,375 light years away) is a located at the left-most star of Orion’s belt. Orion has a lot of interest for the astrophotographer, mostly because of M42 – The Orion Nebula (which can be seen with the naked eye).
The Horsehead Nebula is a dark nebula, in that the dust is so thick that it blocks visible light. The structure around the Horsehead Nebula is lit by the bright star located below and left of the horse’s head in the image.
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The PixInsight Mure Denoise Script does a great job of removing noise from your astrophotography images. However, opting for Mure Denoise means that you are unable to use Drizzle Integration. I believe that a 2X drizzle integration creates a smoother final image.
But instead of doing what I believed to be right, I decided to run a test. I was going to compare what my image would look like with my Mure Denoise Script process vs the combination of TGV Denoise and Multiscale Linear Transform combination.
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I recently completed a 15-panel mosaic using only the hydrogen alpha filter to capture IC 1805 – The Heart Nebula. The next step was to focus attention on the center of the heart, called Melotte 15. The heart of the heart nebula, shot with three narrowband filters to generate a color image.
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