Really interesting results that make me think my next scope could be a fast Newtonian. Thank you Ray for taking time to do the hard work for us :-)
As for functions used in stretching, I would also need to read the info on HistogramTransformation; however, apart from being hopelessly dependent on PI, I also like experimenting with free FITS Liberator since it allows for a few different functions - please refer to the attached print screen.
Cheers,
Suavi
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