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Martin,
I must say that I am really pleased to find that you have done a really high quality image of this galaxy, as previous amateur images of this galaxy have been of modest quality.
This is actually one of the most unusual members of the population of bright galaxies.
If one assumes that the outer portions of this galaxy are essentially circular (in real three-dimensional space), then one is forced to conclude that the bright body of this galaxy is not intrinsically round;
this is therefore an example of a galaxy with an intrinsically oval inner disk (yes, not all spiral galaxies are round!)
(another example of an oval galaxy is NGC 1566)
In my view (and I have pondered the morphology of this galaxy over many years....), the inner oval disk of this galaxy actually forms a bar within the faint outer spiral arms, and there is another bar within the bright inner oval disk!
cheers,
madbadgalaxyman
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