[madbadgalaxyman (Robert)]

Very nice work, Leonardo,

The image looks good and deep.

Is there any sign of unusual or asymmetric optically luminous material outside of the main body of NGC 7331 when you display your imaging data at the highest contrast and brightness?

Another question is, what does the bulge (inner spheroidal) component of this galaxy look like,when the image is reproduced at a more lifelike scaling?
(The characteristic stretch adopted by both professional and amateur astronomers wipes out the bulge component of a galaxy, so we actually lose information when we try to display the outermost portions of a galaxy)

You may be aware that the most recent galaxy atlas, "The De Vaucouleurs Atlas of Galaxies", adopts a similar image scaling (that is, a logarithmic scale), so the displayed images in this atlas tell us only about the planar disk component of spiral and S0 galaxies.....and tell us nothing about the prominence or shape of the spheroidal component in these galaxies.

A good corrective to these stretched "disk component only" images are the old-fashioned chemical process images in the Carnegie Atlas of Galaxies, which have no fancy processing whatsoever. These images preserve information about the bulge component of galaxies.