If you’re drooling over the latest, expensive camera body and lens offerings in hopes to improve your landscape astrophotography, consider using image stacking instead of spending a boatload of money on new equipment. In the video tutorial below, I walk through the techniques that I use to combine several exposures of the Milky Way using Adobe Photoshop. The resulting photograph from combining just 8 separate exposures offers a great improvement in the quality of the image by reducing noise and revealing more detail. Credit: Robert Williams and the Hubble Deep Field Team ( STScI) and NASA via HubbleSite This Hubble Deep Field Image was made from a stack of 276 frames. Most of the telescope photographs that you see from observatories like the Hubble Space Telescope were made by combining hundreds of separate photographs with hours and hours of data to yield such beautiful images of the night sky. Stacking is a technique that’s been used by astronomers and astrophotographers for decades. Combining a bunch of consecutive exposures of the night sky can greatly improve image quality and it has allowed me to use smaller, cheaper and more compact gear (like a point and shoot or even a smartphone) without making too many compromises in image quality. Lately, I’ve been on an exposure stacking kick. I also demonstrate what to do when auto-alignment tools, like Photoshop’s Auto-Align Layers function, fail to properly align your images. In this video tutorial I walk through a technique for reducing noise and improving image quality by combining multiple astrophotography exposures.
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