Figure 2. The Mastcam-Z Calibration Targets imaged by the left eye (L0) of Mastcam-Z on sol 180 at 48 mm zoom (Image ID: ZL0_0180_0682919878_394IOF_N0062666ZCAM03014_048085A02, sequence ZCAM03014). The main regions of the primary and secondary targets are indicated with the names used in this work.
From landing to sol 350, Mastcam-Z acquired 2578 images of the cal-targets. Among those images, and all the filters of Mastcam-Z, the L0/R0 Red/Green/Blue (RGB) Bayer broad-band filters installed within the sensors of the two eyes of the camera were the most used, not only for calibration as part of multispectral sequences but also to obtain color images for testing and verification of the camera and the calibration targets, photometric analysis, and public outreach. The amounts of images taken among the filters of Mastcam-Z are listed in Table 1. The RGB images in the two eyes are considered as “single shot” images, but they can be split into three frames corresponding to their three Bayer components (named L0R, L0G, L0B for the left eye and R0R, R0G, R0B for the right eye), each one covering a different spectral range. Of the 2578 images mentioned above, 344 were transmitted losslessly, without any lossy compression. The remaining 2234 were transmitted using an 85% quality level compression.