Professor Eswar Reddy provided a tour of the new facility and presented an update of the project development to the Vice President of India and several members of Parliament.
The three-story building of nearly 3,600 square meters is a world class optical facility dedicated to TMT primary mirror segments fabrication.
The Vice President of India with distinguished Professors of the India Institute of Astrophysics and India-TMT members participated in the opening ceremony and were guided in viewing the new building on 29 December 2020.
New integration facility for NFIRAOS, TMT first light Adaptive Optics (AO) at NRC-HAA research center in Victoria, British Columbia, Canada, where NRC-HAA and industrial subcontractors are developing NFIRAOS. The building will allow the integration and test of NFIRAOS with its first light instrument IRIS. This is illustrated in the top right figure, which shows a CAD rendering of NFIRAOS and IRIS installed in the building.
CAD drawing of three GMS fixed laser trackers (circled orange) mounted on the telescope elevation structure and 3-view drawing of Laser Tracker #1 .
TMT’s fully-automated CO2 snow cleaning in-situ process will use four robotic arms carrying spray nozzles that will produce CO2 snow to drive any dust particle off the primary mirror surface. The cleaning system will move the arms across the surface of the mirror at a uniform distance and controlled speed.
TMT’s Primary Mirror surface will be regularly cleaned by four robotic arms. The arm devices will sweep across the mirror and spray snow carbon dioxide through an arrangement of nozzles to remove dust and small particles. The CAD model of the arm supporting the CLN system is courtesy of MELCO.
TMT’s Cleaning system for the Primary Mirror (M1) optics is automated and uses CO2 to clean the 492 mirror segments mounted in the M1 cell. Four robotic cleaning arms will sweep nozzles spraying CO2 evenly across the primary mirror. This cleaning process will be performed with the telescope locked in horizon-pointing orientation.
The WFOS design now features a vertical orientation that enables the instrument to be gravity invariant as it de-rotates the field during observations.
The design is showing the Nasmyth platforms (in blue) and two of our early light instruments. The TMT Wide Field Optical Spectrometer (WFOS) is located on the right platform while the Adaptive Optics system (NFIRAOS) plus the InfraRed Imaging Spectrograph (IRIS) are located on the left platform.