Well, one's been "sent to (an)other planet(s)." It just didn't arrive safely.
I'm talking about the Mars Climate Observer.
The primary instruments were a radiometer:
a nine-channel limb and nadir scanning atmospheric sounder designed to
vertically profile atmospheric temperature, dust, water vapor and
condensate clouds and to quantify surface radiative balance
and a color imager with two cameras -
one of which takes limb observations to detail the atmospheric
structure of clouds and hazes at Å 4 km resolution, the other of which
has ten spectral channels from 425 to 1000 nm which provide the
ability to discriminate both atmospheric and surface features on the
basis of composition.
It was destroyed by a units problem. Faster, maybe, cheaper, maybe, better? No.