A preliminary design review (PDR) will be held to present the conceptual design of the instrument, including the optical design, CCD detector systems, image quality and image motion error budgets, and concepts for all of the major mechanical components including the structure, automated mechanisms, and opto-mechanics.
Following a successful preliminary review, detailed design of the mechanical and opto-mechanical systems will begin with the intent of carrying the critical component design work to the pre-fabrication stage. During this period, the electrical and software design tasks can be started, based on conceptual designs from the PDR. Long lead-time tasks, including the optical and CCD systems, will begin fabrication during this period. Well defined, non-critical mechanical and electronic tasks can also begin fabrication. Following the detail design phase, a critical design review (CDR), focused on all phases of the detailed design work, will be held. The purpose of the CDR will be to establish that the completed design work, supported by appropriate analysis (thermal, optical, finite element, etc.), conforms to the requirements approved at the PDR.
A final, pre-shipment review (PSR) will be the last review held. The purpose of the PSR will be to demonstrate the assembled instrument meets the performance requirements, based on testing of the finished components and the instrument as a whole. Following the PSR, the instrument will be disassembled and shipped to Chile.