I've shot this target before, but never at this focal length in H-alpha. What intrigues me about this image is the motion. You can almost see the swirling of the central star as it shoots out energy—something is certainly spinning out radiation.
This image is 9x720" through an Astronomik 6nm H-alpha filter and the CCF 290 Classical Cassegrain (at about f/8) with the SXVF-H9 camera.
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