NGAO Performance Budget Summary Keck Adaptive Optics Note 491

This document presents a summary of the performance budget studies conducted as part of the NGAO design study, and compares these predictions to the NGAO science and system requirements. The eight performance budget studies and the personnel originally assigned to perform these studies are listed in Table 1. Five of these studies have produced KAONs, while studies on polarimetric performance and on transmission and background have produced power point slides presented at NGAO team meetings. The studies on observing efficiency and system uptime have been postponed, though KAON 463 contains material pertinent to both topics. The science requirements presented in this report have been extracted from Table 4 of the NGAO Science Case Requirements Document (Revision 1), which has been released as KAON 455. This document will be referred to as the SciRD. The NGAO System Requirements Document is also utilized in this performance budget summary. This document has been released as KAON 456, and will be referred to as the SysRD. The SysRD lists performance requirements derived from the SciRD in Table 7 of the document. Both sets of requirements are included in this study for completeness.