[madbadgalaxyman (Robert)]

Mr Sidonio, hello there,
madbadgalaxyman here, calling in briefly, for "just one brief landing in astro-land only"......as I am reading nothing but geology and microbiology and soil science.
(madbadgalaxyman mainly studies the dirt, these days!!)

The arms of this galaxy are very LSB, so very very good work by you with your excellent image of a very tough target.

This system is "two galaxies in one", due to its dual spiral structure:

(1) a long and very-symmetric spiral arm pattern , very smooth textured, made up of mainly old stars.

(2) onto the "very old and well-behaved spiral pattern" is superposed a very chaotic, and nearly random, spiral structure of OB stars and HII regions

This galaxy is a brilliant illustration of that dichotomy of spiral structure which exists to some extent in all spiral galaxies;

.......the "old stellar backbone" of a spiral galaxy is subject to a coordinated & long wave of increased density, leading to long and symmetric spiral arms in the mass-dominant distribution of the galaxy's old stars.....

.........while - in contrast - the young material in a spiral galaxy, that is, the dense gas and the recent star formation and the OB stars and HII regions, may (though does not have to) display a completely different and much much more Chaotic spiral pattern, due to the effects of what is known as propagating "stochastic" star formation.

Best regards,
Robert