As an astrophotographer looking to build a small observatory, Jim Duke chose to move to the Henly area to avoid the rapidly creeping light trespass from Austin.

But light trespass from a recently built concrete batch plant in Blanco County has made Duke’s pursuit more challenging. Now Duke is trying to raise awareness of the trespass of light near Henly.

Duke said the issue began several months ago when he noticed bright lights in the sky while looking up at the stars.

A large professional t...