In the beginning was the plate.I have been using a saline sulphate mix as an etchant. The first plate was produced using hard ground softened and rag wiped with methylated spirit, etched, wiped and so for about four cycles.
The pattern on the bottom came from burning parcel tape on the plate. before etching.
The planet is an aluminium litho plate which was etched very deeply. Both plates were inked up intaglio.
The final image was brought together in PhotoShop with the addition of a sunset sky photograph.