That's wonderful, Peter.
If one draws a line from Swan to Eagle and continues about the same distance in the same direction (generally 7 o'clock) one comes to a big bright lump of nebulosity that I'm entirely unfamiliar with, perhaps because it's well to the North, but looks like it should be famous. On your image the brightest patch is at pixel coordinates (637, 4932) referenced to top left. Any idea what it is?
Best,
Mike
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