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Re the details: you actually have good details present, but what we are referring to is the slightly blurry image. 30 degree elevation doesn't help, because your shooting through a slightly thicker atmosphere if that makes sense. The presence of the jetstream will cause havoc with imaging too. If you shoot with bad seeing conditions, one will end up with blurry images. I judge seeing conditions on naked eye observations of bright stars at the zenith...if they are twinkling a lot, you can be pretty certain it's not going to be a good night for imaging.
If you found no nice clear frames then yeah, sounds like you had fairly poor seeing conditions at the time.
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