English: The mosaic is a composite of an LROC NAC 2 m polar mosaic and 24 ShadowCam images (acquired between 18th February (sub-solar latitude 1.39°S, sub-solar longitude 201.53°E) and February 23rd (sub-solar latitude 1.34°S, sub-solar longitude 137.63°E).

Knowledge of the magnitude and direction of the secondary illumination is crucial for reliable interpretation of contrasts observed in ShadowCam images. More about this ongoing study of Shackleton crater using ShadowCam images can be found in the recently published JASS paper online: Mahanti, P., Robinson, M. S., Humm, D. C., Wagner, R. V., Estes, N. M., & Williams, J. P. (2023). Preliminary Characterization of Secondary Illumination at Shackleton Crater Permanently Shadowed Region from ShadowCam Observations and Modeling. Journal of Astronomy and Space Sciences, 40(4), 131-148, https://doi.org/10.5140/JASS.2023.40.4.131.