![]() Versatile and Powerful Photo Editor / Image Manipulation Software.Generic Photo Editor | Commercial From $9.99 Subscription Plan | Windows, Mac OS X, IOS Adobe Photoshop CC Pros To get the best from the two worlds, load your stacked images in Lightroom, organize them in collections, and call Photoshop from within Lightroom for the astro-specific editing (histogram stretching, etc.). And here is where things get interesting. If you are subscribing to the Adobe Photography Plan, you also have Photoshop CC included for free. Lightroom is also great for color proofing your images before printing them. On the other hand, it is a terrific editor for the final cosmetic tweaks to your image and to organize them in collections, per tag, and location. Its usefulness in astrophotography is somewhat limited, as you cannot perform complex tasks such as histogram stretching, advanced light pollution, and gradient removal, star reduction, etc. Can’t do the complex editing needed for astrophotography (histogram stretching, Stars Reduction, etc)Īdobe Lightroom is a popular, easy to use and fairly powerful RAW developer and image organizer.Powerful image development and image organizer.Generic Photo Editor | Commercial From $9.99 Subscription Plan | Windows, Mac OS X, IOS Adobe Lightroom CC Pros Here is a list of software that are most commonly used to post-process astrophotography images. Not many astrophotography editors are this flexible. In this article, for example, we discussed how to stack starry landscape images in Photoshop. With a generic photo editor, it is easy to post-process all kinds of astrophotography, from deep-sky imaging to lunar and planetary shots, passing for star trails and starry landscapes. The main advantage of generic photo editors over specific astrophotography editors is versatility. Astrophotography editors, such as StarTools, Nebulosity, Astro Pixel Processor, Pixinsight, etc.generic photo editors, such as Photoshop, Gimp, Affinity Photo, etc.We can group the software for astrophotography post-processing in two categories: Software For Astrophotography Post-Processing The procedure is particularly useful when shooting deep-sky objects, such as nebulae, that are in the Milky Way Band. The effect of doing the Star Reduction on the star field around the California Nebula. While it seems odd that you want to shrink or remove stars from a photo about stars, this process aims to make the multitude of visible stars in the image less imposing and distracting.īy reducing enlarged stars due to the histogram stretching and by removing the smallest stars, you make the deep sky objects in the image more visible, as shown in the image below. ![]() Star reduction is another process that is standard when editing deep-sky astrophotography. The process allows us to take full advantage of the image stacking process, and it results in a cleaner, brighter image with a lot of details that were not visible (or barely visible) in the single exposures. The effect of the Histogram Stretching process is illustrated in this image, moving from the top left to the bottom left image in a clockwise direction. Thus pushing details that were crammed in the blacks towards the middle tones.Īnd you do that slowly, in small steps, to ensure retaining the best possible image quality. To keep it simple, let’s say that when you perform the stretching of the histogram, you are broadening the histogram. Histogram stretching can be done manually using Adobe Photoshop or in automatic/semi-automatic way using astrophotography software such as Astro Pixel Processor, Star Tools, or His Majesty PixInsight.Ī rigorous explanation on how digital data are recorded and how the histogram works can become fairly technical and is beyond the scope of this article. The same image right after the background extraction, gradient and light pollution removal, and star color calibration performed in Astro Pixel Processor. And this is why this process also goes under the name of background extraction. There is nothing wrong with it, as all the details and information are there, but hidden in the dark background. A typical result from stacking 28 exposures, each 3 minutes long, with Deep Sky Stacker (DSS). With deep sky astrophotography, this stacked image can be surprisingly dark, with only a few bright stars visible. ![]() This scheme illustrates the essence of image stacking. With image stacking, you have combined all your light frames (the actual images of the sky) into a single image with an enhanced signal-to-noise ratio. What Histogram Stretching Is And Why You Need It Of the steps mentioned above, it is worth to spend a few words on the Histogram Stretching, as it is of utmost importance in deep-sky astrophotography. In astrophotography, the post-processing includes steps that are crucial to the quality of the final image. 4) Conclusions What Does Post-Processing Mean In Astrophotography?
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