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. 2021 Feb 18;217(2):29. doi: 10.1007/s11214-021-00795-x

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© The Author(s) 2021

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 9 — Geometric targets used during stand-alone calibration taken with the right Mastcam-Z. Top Left: MTF Mapper “lensgrid” target used to calculate the MTF at a distance of 1.7 m. Top Right: JPL uniform grid dot target at a distance of 3.2 m. Bottom Left: JR random dot target at a distance of 1.5 m. Both dot targets were used for determining instrinsic camera parameters. Bottom Right: Siemens star target used as an additional target for calculating the MTF at a distance of 2.5 m