Credit JPL/NASA
Introduction
InSight landed in Elysium Planitia at 4.5N latitude and135.6 E. Longitude on November 26, 2018. The goal of the mission was to study the deep interior, but the mission was supported by a camera with multiple filters that could be used to quantify atmospheric opacity. The lander had two cameras (the Instrument Context Camera (ICC) and the Instrument Deployment Camera (IDC)). Images from both cameras were used to derive opacity measurements are reported as optical depth at 600 nm. Details of the cameras can be found in Wolfe and Lemmon (2023). The approach for derivation of tau can be found in documentation in the MSL Opacity bundle https://10.1789/fjh0-2978
References
Wolfe, C.A., and M.T. Lemmon (2023). Using Engineering Cameras on Mars Rovers and Landers to Retrieve Atmospheric Dust Loading. Planet. & Space Sci. in press. 
 https://doi.org/10.1016/j.pss.2023.105741Maki, J.N., Golombek, M., Deen, R. et al. The Color Cameras on the InSight Lander. Space Sci Rev 214, 105 (2018). https://doi.org/10.1007/s11214-018-0536-z
Spiga, A., D. Banfield, N.A. Teanby, F. Forget, A. Lucas, B. Kenda, J.A. Rodriguez Manfredi, R. Widmer-Schnidrig, N. Murdoch, M.T. Lemmon, R.F. Garcia, L. Martire, O. Karatekin, S. Le Maistre, B. van Hove, V. Dechant, P. Longonne, N. Mueller, R. Lorenz, D. Mimoun, S. Rodriguez, E. Beucler, I. Daubar, M.P. Golombek, T. Bertrand, Y. Nishikawa, E. Millour, L. Rolland, Q. Brissaud, T. Kawamura, A. Mocquet, R. Martin, J. Clinton, E. Stutzmann, T. Spohn, S. Smrekar, W.B. Banerdt, 2018. Atmospheric science with InSight. Space Sci. Rev. 214, 109. DOI: 10.1007/s11214-018-0543-0.
Documentation
User's GuideResults from the InSight atmospheric imaging campaign
Accessing the Data
Opacity BundleThe Data
To retrieve the data, access the Compressed Data FileCiting datasets for publication
PDS recommendations for citing data sets can be found hereThe citation: Sackett,S,E (2024). Opacity of the Martian Atmosphere Measured by the Cameras of the Mars InSight Lander SIS, NASA Planetary Data System, https://10.17189/dc8r-ag55