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.