Arp 233 is the first member of the class Appearance of Fission. The Atlas
note is "narrow faint absorption lane in SE direction". That can be seen,
barely, in the 3.5X detail image. I really can't make it out in the Atlas
image. Arp 233 is also cataloged as UGC 5720.
|10-inch Newtonian, StarlightXpress MX716, 20 minutes|