A cornerstone of Arp’s “Intrinsic Redshift” debate. The companion galaxy has a very different redshift, and in 2001 two Spanish astronomers discovered 2 quasars perfectly aligned in the filament (not visible in my or Arp’s original capture)

Sixth captured of 21 galaxies in Vera Rubin’s famous research paper from 1980 analyzing galaxy rotation postulating Dark Matter

Fifth captured of 21 galaxies in Vera Rubin’s famous research paper from 1980 analyzing galaxy rotation postulating Dark Matter

Fourth captured of 21 galaxies in Vera Rubin’s famous research paper from 1980 analyzing galaxy rotation postulating Dark Matter

Third captured of 21 galaxies in Vera Rubin’s famous research paper from 1980 analyzing galaxy rotation postulating Dark Matter

Second captured of 21 galaxies in Vera Rubin’s famous research paper from 1980 analyzing galaxy rotation postulating Dark Matter.

First captured of 21 galaxies in Vera Rubin’s famous research paper from 1980 analyzing galaxy rotation postulating Dark Matter.

A beautiful emission nebula in Cygnus.

Polar ringed lenticular galaxy, tough EAA target for an OSC camera.

Challenging observation given hugely bright Seyfert nucleus and Arp’s ambiguous description of a low surface brightness companion.

One of six “integral sign” galaxies in the Atlas

A mono camera, with no IR cut filter, makes handy work of Caldwell 5!