Wiktionary
heliographing
vb. (present participle of heliograph English)
Usage examples of "heliographing".
It was a dimensionless point of light, as if a star had been clawed from the sky by one of those cruel peaks, and I imagined that some smooth rock surface was catching the sunlight and heliographing it straight into my eyes.
The mirror was simply a heliographing gadget of a commercial type which had been on the market twenty or thirty years before, and sometimes used by the army for signaling purposes.