How Far Can Trigonometric Parallax Be Used Reliably To Determine The Distance To Stars?

How Far Can Trigonometric Parallax Be Used Reliably To Determine The Distance To Stars? This limits Earth based telescopes to measuring the distances to stars about 1/0.01 or 100 parsecs away. How can parallax be used to determine the distance to stars? Astronomers estimate the distance of nearby objects in space by using a method