1. Martian Sands Scott Rowland TGIF Groundhog day, 2019
Mastcam image of Namib dune

2. Navcam image of robotic arm with the MAHLI camera over a target named
Barby, on sol 1184 (late 2015).
At 3 cm from the surface, the spatial resolution is 24 μm pixel-1
MAHLI (w/ lens cover closed)
MAHLI:
1600 x 1200 pixels
Focus from 1.6 cm to ∞
13.9 µm pixel-1 at
closest (24.15 µm
pixel-1 at 3 cm)
Red visible to UV
LEDs (vis. and UV)
for night work
34° field of view
On turret, on 2.2 m-
long arm
Edgett et al. (2012)
Space Science
Reviews 170:259-
317
MAHLI

3. MAHLI image from 3 cm (24.15 μm pixel-1)
96% of all grains are
0.2 – 0.55 mm across
(median = 0.33 mm;
medium sand)