Delta II 7925H - 10L Baseline workup Launch Vehicle TheirsOurs Delta II 7925H Launch Vehicle 10L Composite Fairing 10L Stretch Composite Payload Fairing

Delta II 7925H - 10L Baseline workup Launch Vehicle Configuration 10L Composite Fairing Launch Volume (TMA-55 or 56) 6019 PAF 2nd Stage Engine 7925H LV Ours Theirs

Delta II 7925H - 10L Baseline workup TMA-55 Launch configuration 10L fairing Sun side envelope (270 deg) TMA-55 OTA (Baffle removed) Radiator side envelope (90 deg) 2nd stage engine 7925 Launch Vehicle

Delta II 7925H - 10L Baseline workup 10L Composite Fairing 6019 PAF 2nd Stage Engine

Delta II 7925H - 10L Baseline workup TMA-55 Optics

Delta II 7925H - 10L Baseline workup TMA_56 Optics

Delta II 7925H - 10L Baseline workup TMA-55 and TMA-56 Comparisons TMA-55 Very thin Optical Bench Plate Cassegrain Focus is buried inside Primary Pickoffs not accessable Filter Wheel limits beam rotation Thick Optical Bench Plate (250mm) Room for detector mounts and shield Multiple Pickoffs TMA-56

Delta II 7925H - 10L Baseline workup TMA-55 Rotated Beam

Delta II 7925H - 10L Baseline workup TMA-56 Optics with Gigacam. Configured for DeltaIV 4 meter fairing Secondary Mirror Primary Mirror NIR Imager CCD Imager Tertiary Mirror Radiators Filter wheel Star Trackers Gyro TTL Tracker Optical and NIR spectrometers Pickoff Assembly Flat Folding Mirror