SNAP telescope: an update

摘要: We present the baseline telescope design for SuperNova/Acceleration Probe (SNAP) space mission. SNAP’s purpose is to determine expansion history of Universe by measuring redshifts, magnitudes, and spectral classifications thousands supernovae with unprecedented accuracy. Discovering these demand both a wide optical field high sensitivity throughout visible near IR wavebands. have adopted annular-field three-mirror anastigmat (TMA) configuration, whose classical aberrations (including chromatic) are zero. show preliminary optmechanical that includes important features stray light control on-orbit adjustment alignment optics. briefly discuss tolerance issues, wavefront error budget SNAP Telescope. conclude describing some tasks being carried out during current research development phase.