Object near M57 in 1951 not in recent images

Hi Mark,You could pass this on to the AAVSO www.aavso.org or the guys at the CBA (center for backyard astrphysics) cbastro.org/

Ot indeed the baavss (british variable star section) britastro.org/baa/content/view/44/82/

These organisations specialise in this.

Keith..