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Galaxy rising, part two

April 2013: Here's a second way to put the Andromeda Galaxy or any other celestial image right where you want it.
RELATED TOPICS: ASTROIMAGING
tony_hallas
In last month’s column, I showed you how to bring in the image of the arch on top of the Andromeda Galaxy (M31) as a layer, select the blue sky, and delete it from the stack. This process allowed us to see M31 underneath.

Now let’s go about this in a different way.

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