Arp 324, or UGC 10143 chain, first cataloged as VV 159. Hercules, in galaxy cluster Abell 2147. June 2019. Telescope: D=508 mm, F/4. Ocular: 5.5 mm. Site: sky brightness 21.5 mag/arcsec, elevation 700 m. Sketch: white paper, pencil, blending stump, finished at the scope. Digitization: camera, daylight. Presented here with the north up, approx. 30 arcmin tall.