Thomas Lee Elifritz wrote in
:

The point of the post was to indicate that mass spectrometers are not
necessarily 'huge machines', they are getting smaller and more
sophisticated every year, and will eventually be standard equipment on
planetary landers, flybys and penetrators.

I was actually wondering about this.

It can certainly get a lot
more sophisticated than the suite of spectroscopy instruments
available on MER.

That's how they kept costs under $800 million. We aren't getting much for
our money, are we?

For instance, 2 step laser mass spectroscopy was used on ALH80001.

What was that one?