arp 18

 I remember this catalogue from a bit back but this wasn't inspired by it, rather a memory jog.

Arp's catalogue page using a 200" reflector

our attempt at a 1960's negative from our attempt with an 8" reflector

ngc4088 arp18 in ursa major
700d on gso203    best of 60x4min @ ISO800

... and the inevitable rethink...