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30 September 1994 Optics for the high-resolution stereo camera in the Mars-94 project
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Abstract
The Objective lens 'Apo-Orthometar 5.6/175' and the Filter Plate are parts of the High Resolution Stereo Camera for metrical and spectral Mars surface mapping intended for application in the Russian Space Mission Mars 94. The Mars surface will be mapped using three CCD line sensor assemblies with three CCD lines each (attached behind the filter stripes). These line sensor assemblies are adjustable independently so that for stereo, photo-metrical, and nadir channels the image 'plane' can be adapted optimally also that residual focus differences remain inside the depth of the focus limit (also taking into account a field of view (FOV) of +/- 20 degree(s)). The Lens resolution is adapted to the sensor characteristics. Due to the wide spectral range (blue to near infrared) an apochromatic lens correction is required. Additional filter stripe thickness adaptation of blue and IR channel and optimum line sensor assemblies adjustment cause a very good resolution of the spectral channels. The following requirements for application in space had to be considered in the lens and filter design: Low mass, low thermal focal shift , adapted material, mechanic-dynamical stability, and applicability in space. The optical and mechanical design, manufacturing, mechanical-dynamical tests, thermal vacuum tests, optical parameters verification and consideration of tests results shall be described.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Bettina G. U. Moebius, Marion Magerl, Eberhard Dietzsch, and Hans Lauth "Optics for the high-resolution stereo camera in the Mars-94 project", Proc. SPIE 2210, Space Optics 1994: Space Instrumentation and Spacecraft Optics, (30 September 1994); https://doi.org/10.1117/12.188116
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