We present a far-field imaging system with a one-dimensional form factor based on coupling light into the side of an optical fiber. The point spread function of this thread-like camera is determined analytically and confirmed experimentally. Because the system is one-dimensional, high resolution is available in one spatial dimension. An imaging device is demonstrated with an angular resolution of 100 micro-radians. Diffraction-limited imaging is achieved for aperture lengths as large as 1 cm. An image is formed from a light field produced by a Dammann grating illuminated by a laser.