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Hi Alexander & All,
There are probably in the order of four dozen galaxies -- if not more that are observable in 45cm from Halton Arp's list given a true dark sky. Only a few of them are truly inviting telescopic treats mind you, but deep sky observing is done as much with the mind's-eye as with the eye. If you have an appreciation of the nature of what you are looking at, it adds a great deal to those tiny little dots of mist.
Once you have finished those off, you could then try yourself out on Benjamin Markarian's catalogue of compact, optically bright galaxies that include starbursts and active galactic nuclei and many other galaxies with odd morphologies, many of which are also peculiar, interacting or ... weird in one way or another.
Best,
Les D
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