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Fixing oval stars

December 2012: Follow these steps to improve any unshapely stars infiltrating your images.
tony_hallas
You’ve polar aligned carefully, collimated your telescope, and chosen an appropriate guide star. Yet, despite all these precautions, you’ve ended up with oval stars in one of your images. As long as the ovals are not too extreme, it’s possible to round them out in Photoshop if you follow these steps.

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