ROSIS

Reflective Optics System Imaging Spectrometer

ROSIS is a compact airborne imaging spectrometer, which had been developed jointly by MBB Ottobrunn (now EADS-ASTRIUM), GKSS Geesthacht (Institute of Hydrophysics) and DLR Oberpfaffenhofen (former Institute of Optoelectronics) based on an original design for a flight on ESA's EURECA platform.

First flights were performed in 1992, the current version ROSIS-03 is operated since 1999. The design driver for ROSIS was its application for the detection of spectral fine structures especially in coastal waters. This task determined the selection of the spectral range, bandwidth, number of channels, radiometric resolution and its tilt capability for sun glint avoidance. However, ROSIS can be used just as well for monitoring of spectral features above land or within the atmosphere.

Key parameters of ROSIS are:

Principle	Grating Spectrometer Pushbroom
Spectral range	430 - 860 nm
Bandwidth	4.0 nm
Bands	115
Total field of view	±8º
Instantaneous field of view	0.56 mrad
Pixels per line	512
Max. scan frequency	62 Hz
Digitization	14 bit
Onboard calibration	Internal Hg lamp

ROSIS can be operated on board of DLR's research aircraft Dornier228 and Cessna Grand Caravan. More details on technical specifications, system performance, and applications can be found in the document linked in the right navigation bar.