We have another Space Science Reviews meta-mega-paper. In vol. 221, posted 17 Sep 2025:
Näsilä, A. Kohout, T. Boselli, M. et al. The Asteroid Spectral Imager (ASPECT) on the Milani CubeSat Art 86 s11214-025-01193-3
The Hera mission to Didymos/Dimorphos is now flying. It carries with it the Juventus and Milani CubeSats, to be deployed when in Didymos orbit. The Milani subprobe carries with it the ASPECT instrument, to study asteroid morphology and mineralogy. ASPECT is a multi-headed camera, with each (rather small) parallel camera designed around a somewhat different color band. The result will be images of reasonable spatial resolution, plus spectral information beyond that of the naked eye (and I don’t mean just silicon infrared). ASPECT will map an asteroid including beyond 1000 nanometers, which means distinguishing the olivine content from other minerals. The Space Science Reviews paper now includes in-flight checkout- can’t wait til Nov. 2026.