Friday, October 4, 2019



It turns out that there is a catalog of peculiar galaxies!  This is my type of catalog!

The Atlas of Peculiar Galaxies is a catalog of peculiar galaxies.  It was produced by Halton Arp in 1966 and was originally published by the California Institute of Technology in the same year

The primary purpose of the catalog was to present photographs of examples of the different kinds of peculiar structures found among galaxies.

There are a total of 338 galaxies presented in the atlas.

This is one of them.  I captured it last night shortly after moonset.

Arp 28

Arp 28.  It's a peculiar galaxy. Click for the bigger version.

The Arp 28, magnified, is below.

This galaxy was fun to find and tease out details because it is so small and dim,

Arp 28, Magnified

Arp 28, bigger.
This image says a lot about the capabilities of the ZWO ASI294MC imager.  It is basically a crop of the full image captured last night.  Even after being cropped this much, there is still useful detail in the image.

So, what is peculiar about Arp 28?   It is in the class of “Spiral Galaxy with One Heavy Arm.”

I can see that.

Arp 28 was one of the observing challenges for October 2019 in the EAA forum on Cloudy Nights.  These challenges are alway fun and rewarding.


  1. Oh, NOW I get what the observing challenges are. Makes things more fun, eh?

    1. It also gives a little advance insight into what you can expect to see with backyard equipment rather than Hubble class instruments.


Featured Post

More HyperStar Fun

Yes, more HyperStar fun! Thursday night, we finally had clear dark night. It was worthy of putting the HyperStar on the Cat. It was worthy o...

Popular Posts