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Scattering And Absorption of Light in Planetary Regoliths
11:34

Scattering And Absorption of Light in Planetary Regoliths

Published on: July 1, 2019

Optical material problems of interplanetary space.

R A Becker1

  • 1California Institute of Technology,Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena,California 91103, USA.

Applied Optics
|January 9, 2010
PubMed
Summary
This summary is machine-generated.

Optical systems can survive deep space missions, as shown by Mariner flights. Material selection and thermal design are crucial for deep-space optical systems to prevent sublimation and maintain focus.

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Area of Science:

  • Spacecraft engineering
  • Optical system design
  • Materials science

Background:

  • Mariner II and IV missions confirmed the viability of optical systems in interplanetary space.
  • Deep space environments present unique challenges for spacecraft instrumentation.

Purpose of the Study:

  • To detail the material selection and thermal design considerations for the Mariner IV television camera optical system.
  • To address challenges in designing optical systems for long-duration deep space missions.

Main Methods:

  • Investigated material properties, focusing on sublimation and deterioration in vacuum.
  • Evaluated three distinct thermal design approaches for maintaining optical focus.
  • Assessed potential damage from micrometeoroids and radiation.

Main Results:

  • Identified sublimation and material deterioration as key factors in deep-space optical system design.
  • Confirmed that specific thermal design strategies can maintain focus across wide temperature ranges.
  • Determined that micrometeoroid and radiation damage are not primary concerns for these systems.

Conclusions:

  • Successful material selection and thermal design are critical for deep-space optical system functionality.
  • The Mariner IV television camera optical system incorporates specific solutions for deep-space environmental challenges.