I have already seen this spectacular pair a couple of times berore I drew it in 2013 during the astronomical week at Ágasvár. Abell 70 is a ring shaped planetary nebula about 15.000 light years away. There is a tiny edge-on galaxy PGC 187663 shining through this ring from a much greater distance behind it.

Everything is very faint and very hard to see within the premises of my sketch. I had to fight even for the stars: it took at least an hour to draw the two faintest ones. Perhaps the background galaxy is the easiest object of this little field. It can be seen relatively easily. The galaxy is of course not visible as a separate object. It seems to be a bright segment of the ring. I didn't see any other details in the ring. The ~18.0^mg central star is spectacular as well (of course I didn't see it in the telescope). It is a white dwarf - Barium star binary system (see B. Miszalski et al.). I didn't use any filters during drawing.