Abstract: The rescue hook can be remotely attached to a load and can self-center to position the load in an optimal place on the hook. One embodiment of the rescue hook has an opening for a placement tool such as an extended stick so a user can place the rescue hook onto an attachment point of a harness or object remotely. The body of the rescue hook can form an elongated throat to hold the attachment point and a gate pivotably attached to the body to enclose the throat.

Abstract: An atmospheric aberration sensor that uses two optically correlated images of a scene and the Fourier transform capabilities of a lens or other focusing element. The sensor receives light via an f-number matching element from a scene or from an external optical system and transmits it through a focusing optical element to an updateable display element such as a spatial light modulator or micro mirror array, which modulates the real time image from the focusing element with previous template image of the same extended scene. The modulated image is focused onto an autocorrelation detection sensor, which detects a change in centroid position corresponding to a change of the tip/tilt in the optical path. This peak shift is detected by centroid detection and corresponds to the magnitude of global wavefront tip/tilt. With a lenslet array and detector array, the system can also measure local tip/tilt and higher order aberrations.

Abstract: An atmospheric aberration sensor that uses two optically correlated images of a scene and the Fourier transform capabilities of a lens or other focusing element. The sensor receives light via an f-number matching element from a scene or from an external optical system and transmits it through a focusing optical element to an updateable display element such as a spatial light modulator or micro mirror array, which modulates the real time image from the focusing element with previous template image of the same extended scene. The modulated image is focused onto an autocorrelation detection sensor, which detects a change in centroid position corresponding to a change of the tip/tilt in the optical path. This peak shift is detected by centroid detection and corresponds to the magnitude of global wavefront tip/tilt. With a lenslet array and detector array, the system can also measure local tip/tilt and higher order aberrations.