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Mark, as I said in my first post the image was flickering and was very unstable, so I had al lot of bad frames in the mix. By going as far as selecting 10% of the original stack, I kept the best frames, however, the stack was small, which meant that I risked having a noisy resulting image. Still compared to the 75% stack image (which included more frames but bad ones too), the quality was marginally better. I must say it's the first time I go down so low.
Good luck with the purchase of your dobs. Mine has been great. I reckon a 8" or a 10" is a good starting point, then you will be taking great pictures of the Moon in no time!
Eric
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