The HiRISE camera on the Mars Reconnaissance Orbiter (MRO) is a high-resolution imaging instrument designed to capture detailed images of the Martian surface. It features a 0.5 m diameter primary mirror, 12 m effective focal length, and a focal plane system capable of acquiring images with up to 28 Gb of data in 6 seconds. During the 2-year Primary Science Phase (PSP), HiRISE will provide images with resolutions of 0.25 to 1.3 m/pixel, covering approximately 1% of the Martian surface. The camera will acquire color data over 20% of its field of view and prioritize stereo imaging for topographic measurements with precision better than 25 cm. HiRISE is expected to return over 12 Tb of data, using pixel binning, 14-bit to 8-bit conversion, and lossless compression to increase coverage. The camera uses 14 CCD detectors with multiple binning options and TDI (Time Delay Integration) to enhance signal-to-noise ratio (SNR). HiRISE will support Mars exploration by characterizing landing sites, rover traverses, and various geological processes. The instrument includes a 3-color capability over 20% of the swath width to resolve ambiguities in image interpretation. HiRISE will also provide data for public and educational outreach through an Internet website (HiWeb). The HiRISE instrument includes a telescope, remote electronics, and focal plane subsystem (FPS), with a 50 cm aperture, f/24 system. The FPS contains 14 CCDs with TDI mode, and the instrument is designed to achieve a 100:1 SNR. The camera's performance includes excellent optical and spectral capabilities, with a high-resolution color capability for assessing compositional differences. HiRISE will also provide data for calibration and scientific studies, including radiometric and geometric calibration. The instrument's performance is monitored and calibrated during various phases, including cruise, transition, and primary science phases. The HiRISE science team is responsible for planning and executing observations, with a focus on potential landing sites and geological features. The HiRISE team collaborates with the Mars science community to maximize the instrument's capabilities and ensure scientific objectives are met. The instrument's data will be used for a wide range of scientific studies, including geology, hydrology, and climate change. HiRISE will also provide data for public and educational outreach, with an Internet website (HiWeb) for suggesting targets and accessing data. The HiRISE instrument is a key component of the MRO mission, providing high-resolution images of the Martian surface for scientific research and exploration.The HiRISE camera on the Mars Reconnaissance Orbiter (MRO) is a high-resolution imaging instrument designed to capture detailed images of the Martian surface. It features a 0.5 m diameter primary mirror, 12 m effective focal length, and a focal plane system capable of acquiring images with up to 28 Gb of data in 6 seconds. During the 2-year Primary Science Phase (PSP), HiRISE will provide images with resolutions of 0.25 to 1.3 m/pixel, covering approximately 1% of the Martian surface. The camera will acquire color data over 20% of its field of view and prioritize stereo imaging for topographic measurements with precision better than 25 cm. HiRISE is expected to return over 12 Tb of data, using pixel binning, 14-bit to 8-bit conversion, and lossless compression to increase coverage. The camera uses 14 CCD detectors with multiple binning options and TDI (Time Delay Integration) to enhance signal-to-noise ratio (SNR). HiRISE will support Mars exploration by characterizing landing sites, rover traverses, and various geological processes. The instrument includes a 3-color capability over 20% of the swath width to resolve ambiguities in image interpretation. HiRISE will also provide data for public and educational outreach through an Internet website (HiWeb). The HiRISE instrument includes a telescope, remote electronics, and focal plane subsystem (FPS), with a 50 cm aperture, f/24 system. The FPS contains 14 CCDs with TDI mode, and the instrument is designed to achieve a 100:1 SNR. The camera's performance includes excellent optical and spectral capabilities, with a high-resolution color capability for assessing compositional differences. HiRISE will also provide data for calibration and scientific studies, including radiometric and geometric calibration. The instrument's performance is monitored and calibrated during various phases, including cruise, transition, and primary science phases. The HiRISE science team is responsible for planning and executing observations, with a focus on potential landing sites and geological features. The HiRISE team collaborates with the Mars science community to maximize the instrument's capabilities and ensure scientific objectives are met. The instrument's data will be used for a wide range of scientific studies, including geology, hydrology, and climate change. HiRISE will also provide data for public and educational outreach, with an Internet website (HiWeb) for suggesting targets and accessing data. The HiRISE instrument is a key component of the MRO mission, providing high-resolution images of the Martian surface for scientific research and exploration.