The CAMECA-ims 1290 ion microprobe is the last addition to the UCLA SIMS lab. This instrument was delivered in August 2015 and then was commissioned in Dec 2015. The mass spectrometer part of the ims-1290 is identical to that of the CAMECA ims-1280HR, which has improved electronics and features much higher mass resolution (up to flat-top, M/?M = 40,000) compared to our 25-year old ims-1270. What distinguishes the 1290 from a regular 1280HR is the replacement of the duoplasmatron source with a Hyperion-2 RF oxygen plasma source manufactured by Oregon Physics. This RF source can produce a mass-filtered ion beam that can be focused to a spot as small as sub-micron.