The UV/Optical Telescope (UVOT) is one of three instruments aboard the Swift Gamma-ray Observatory. It is designed to capture early UV and optical photons from gamma-ray burst (GRB) afterglows in the 170-600 nm range and to conduct long-term observations. The UVOT uses UV and optical broadband filters and grisms to achieve this. It has a modified Ritchey-Chrétien design with micro-channel plate intensified charged-coupled device (MIC) detectors that record photon arrival times and provide sub-arcsecond source positioning. The UVOT is used to study GRBs and their afterglows, including their origins, energy levels, and interactions with the environment. The UVOT is part of the Swift Medium-class Explorer (MIDEX) mission, which aims to observe GRBs and their afterglows across multiple wavelengths. The UVOT is mounted on the observatory's optical bench with the Burst Alert Telescope (BAT) and X-Ray Telescope (XRT). It has five functional units, including the telescope module (TM), two digital electronics modules (DEMs), and two interconnecting harness units. The TM includes a 30 cm primary mirror and an f-number of 12.7, with two redundant filter wheel mechanisms and photon counting detectors. The UVOT's detectors are MICs that image incoming photons and operate in a photon counting mode, providing high sensitivity and imaging capability. The UVOT's design includes a filter wheel mechanism with 11 optical elements, a beam steering mirror (BSM) mechanism, and a door module latch mechanism. The UVOT's optics include a modified Ritchey-Chrétien design with a 30 cm primary mirror and 7.2 cm secondary mirror, both made from Zerodur. The UVOT's detectors are MICs that provide high sensitivity and imaging capability, with a 17 x 17 arcmin² field-of-view. The UVOT's electronics include a digital electronics module (DEM) with an instrument control unit (ICU) and data processing unit (DPU), which process photon events and generate telemetry products. The UVOT's software includes ICU software that autonomously controls exposures and maintains instrument health and safety, with a design based on three types of tables stored in EEPROM. The UVOT's thermal design ensures that the telescope and electronics are thermally controlled to maintain optimal performance. The UVOT's software is designed to be flexible and reconfigurable to accommodate changes in observational procedures. The UVOT is a critical instrument for studying GRBs and their afterglows, providing valuable insights into the nature of these high-energy events.The UV/Optical Telescope (UVOT) is one of three instruments aboard the Swift Gamma-ray Observatory. It is designed to capture early UV and optical photons from gamma-ray burst (GRB) afterglows in the 170-600 nm range and to conduct long-term observations. The UVOT uses UV and optical broadband filters and grisms to achieve this. It has a modified Ritchey-Chrétien design with micro-channel plate intensified charged-coupled device (MIC) detectors that record photon arrival times and provide sub-arcsecond source positioning. The UVOT is used to study GRBs and their afterglows, including their origins, energy levels, and interactions with the environment. The UVOT is part of the Swift Medium-class Explorer (MIDEX) mission, which aims to observe GRBs and their afterglows across multiple wavelengths. The UVOT is mounted on the observatory's optical bench with the Burst Alert Telescope (BAT) and X-Ray Telescope (XRT). It has five functional units, including the telescope module (TM), two digital electronics modules (DEMs), and two interconnecting harness units. The TM includes a 30 cm primary mirror and an f-number of 12.7, with two redundant filter wheel mechanisms and photon counting detectors. The UVOT's detectors are MICs that image incoming photons and operate in a photon counting mode, providing high sensitivity and imaging capability. The UVOT's design includes a filter wheel mechanism with 11 optical elements, a beam steering mirror (BSM) mechanism, and a door module latch mechanism. The UVOT's optics include a modified Ritchey-Chrétien design with a 30 cm primary mirror and 7.2 cm secondary mirror, both made from Zerodur. The UVOT's detectors are MICs that provide high sensitivity and imaging capability, with a 17 x 17 arcmin² field-of-view. The UVOT's electronics include a digital electronics module (DEM) with an instrument control unit (ICU) and data processing unit (DPU), which process photon events and generate telemetry products. The UVOT's software includes ICU software that autonomously controls exposures and maintains instrument health and safety, with a design based on three types of tables stored in EEPROM. The UVOT's thermal design ensures that the telescope and electronics are thermally controlled to maintain optimal performance. The UVOT's software is designed to be flexible and reconfigurable to accommodate changes in observational procedures. The UVOT is a critical instrument for studying GRBs and their afterglows, providing valuable insights into the nature of these high-energy events.