He then placed both images of each section in a machine called a blink comparator, which by exchanging images quickly created a time lapse illusion of the movement of any planetary body.
12.
Using a blink comparator, he rapidly shifted back and forth between views of each of the plates to create the illusion of movement of any objects that had changed position or appearance between photographs.
13.
For $ 90 a month, Tombaugh, then 24, used a device called a blink comparator to see whether photographs taken days apart showed any movement that would indicate the presence of something other than stars.
14.
"In 1977, Charles Kowal, using a blink comparator, the same device that had allowed Clyde Tombaugh to discover Pluto nearly 50 years before, discovered 2060 Chiron, an icy planetoid with an orbit between Saturn and Uranus . "-5 commas, ouch!
15.
Try " In 1977 Charles Kowal discovered an icy planetoid in an orbit between Saturn and Uranus which he named 2060 Chiron; he used a blink comparator, the same device that had allowed Clyde Tombaugh to discover Pluto nearly 50 years before . "-or something like it.
