Another deep-sky image from the NFO archives, and another original Hyperstar/H9C composition.  This time the Cave nebula in Cepheus.  I recall the tracking was so good on this one that I actually got some vertical banding where the tracking error was well within 1-pixel for the whole imaging session.  Not sure why it was quite so good that time, something to do with where I was imaging in the sky as well as several other things all working together with me for a change, but I never managed to repeat the precision tracking with this system afterwards 🙁

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