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XACT Sounding Rocket
X-ray Concentrators & Star Tracker
Optical Bench
X-ray Polarimeters, Electronics, & MXS
A 1st approximation of complete XACT rocket
Black Brant VC
Terrier Mk70
Telemetry and ACSSystems
Requirements
Bench separation of 3 meters
Displacement readings of .1 mm accuracy
Angle measurements of .2 arcminutes
Electronic System
Position Sensitive
Photodiodes (PSD)
Rectifier Circuit
Differential ADC
±15V analog +5V
PIC
XY
XY
SPI
GUI
Mac/PC
USB
Lase
r
Calibration
Mill with 2-axis CNC Accurite Controller High accuracy
(.0002”) measurements in two dimensions
Characterize PSD response over entire sensor
Test circuit
Deliverables
Optical Bench Setup
The “smarts” made up of software to calculate displacements and a manual
All pieces built and coded to required tolerances