Judith Lynn Pipher (née Bancroft, June 18, 1940 – February 21, 2022) was a Canadian-born American astrophysicist and observational astronomer.

[2] Following her graduation, she moved to the Finger Lakes region of upstate New York where she taught science and attended Cornell University.

In the late 1960s, she worked as a graduate student of Martin Harwit on a cryogenic rocket telescope experiment.

Pipher and William J. Forrest achieved promising results with a 32×32-pixel array of indium antimonide (InSb) detectors at a NASA Ames workshop.

[5] For the next two decades, Pipher developed ultra-sensitive infrared InSb arrays with the help of colleague William J. Forrest.

[8] She has also worked with Dan Watson and on the development of mercury cadmium telluride (HgCdTe) arrays.

[11] On the occasion of her 80th birthday, June 18, 2020, was proclaimed to be "Dr. Judy Pipher Day" in the Town of Seneca Falls.