Imaging recource: To capture sharp stars, try the new SharpStar focusing tool from Lonely Speck

    Have you ever struggled to achieve sharp stars in your astro images, have you fumbled around in the dark trying to fine-tune your lens? Lonely Speck has a new tool to help astrophotographers achieve perfectly focused stars: the SharpStar.  The SharpStar is a mask that mounts in front of your camera lens and it acts as a Bahtinov Mask. Basically, as you also can see in the tutorial video below, the SharpStar creates diffraction spikes that provides feedback on your focus. There are actually three separate grids on the mask and...
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