1. Life in the Atacama, Design Review, December 19, 2003 Carnegie Mellon Fluorescence Imager Life in the Atacama Design Review December 19, 2003 David Pane Trey Smith Alan Waggoner Shmuel Weinstein And others Carnegie Mellon University

2. Life in the Atacama, Design Review, December 19, 2003 Carnegie Mellon Key Requirements Purpose: To be the Direct Indicator of Life Detect weak fluorescent signal against background View 10 cm x 10 cm area of target Be sensitive to both reagent dye markers and chlorophyll

3. Life in the Atacama, Design Review, December 19, 2003 Carnegie Mellon Fluorescence Imager Placement Chose under the belly for added protection and shading

4. Life in the Atacama, Design Review, December 19, 2003 Carnegie Mellon Fluorescence Imager Ops

5. Life in the Atacama, Design Review, December 19, 2003 Carnegie Mellon Design Considerations Can we perform fluorescence imaging in the day, or are we limited to night? Daytime Imaging Pulsed light source with gated intensifier Shroud/no shroud Sufficiently bright light source Possibly use non-cooled CCD

6. Life in the Atacama, Design Review, December 19, 2003 Carnegie Mellon Recommended System- Side View Lens Filter Wheel Intensifier Camera 5.2cm 40.0 cm 18.1 cm 13.86 cm Object distance 13 cm from front of the lens Optics

7. Life in the Atacama, Design Review, December 19, 2003 Carnegie Mellon Recommended System-Front View 18.1 cm 40.0 cm 5.2cm 13.86 cm 9.05 cm lens LED or Fiber optic from flash 11 cm Protective shield 5.5 cm 8 cm 7 cm 9.5 cm 7 cm 4.5 cm Double Shroud 14 cm hanging down Same on other side

8. Life in the Atacama, Design Review, December 19, 2003 Carnegie Mellon Recommended System-Outside of Unit 9.8552cm 1.752cm 20.32 cm 18.288 cm 15.24cm 21.26 cm Intensifier Control Unit Filter Wheel Control 2.7216 kg? kg 12 VDC 1 motor ~20Watts 110 or 220VAC 10 Watts

9. Life in the Atacama, Design Review, December 19, 2003 Carnegie Mellon System Specs Vertical Length 40 + 14 = 56 cm Z movement from stowed position to ground X movement across underside of rover Instrument clearance 32 cm in Y Both cameras Linux compatible Need contact sensor on the end of unit to avoid using laser rangefinder Through-focus image set to determine best focus Need to determine best method of supplying TTL pulses for intensifier and light sources Optional fiber optic bundle to deliver light from source to distal end of unit Filter wheel filters for imager consist of R, G, B, cholorphyll, and 4 dye filters Filter wheel filters for lamp consist of chlorophyll, 4 dye filters, and an open position