Editing CASSIOPE (section)

===e-POP===
The e-POP portion of CASSIOPE is a suite of eight scientific instruments. The [[University of Calgary]]'s Institute for Space Research leads the science project, while MDA is the prime contractor for the mission including launch and operation of the spacecraft. The orbital science mission is scheduled for a 21-month duration.<ref name=ucalgary2013/>

e-POP will gather data on [[Geomagnetic storm|Solar storms]] in the upper atmosphere.  These storms give rise to the [[polar aurora]] or northern lights seen in the skies in northern latitudes.  While these atmospheric glows may offer a thrilling night time spectacle, the inducing radiation can interfere with radio communications, [[GPS]] navigation, and other space-based systems.{{Citation needed|date=February 2013}} The eight scientific instruments aboard CASSIOPE will help scientists understand solar weather and eventually plan for measures to mitigate its deleterious effects.<ref name=srcf20120626/>

The e-POP payload contains eight scientific instruments:<ref name=epopUcalgary>{{cite web |url=http://epop.phys.ucalgary.ca/payload.html |title=e-POP Payload on CASSIOPE |publisher=University of Calgary |year=2013 |access-date=February 20, 2014 |archive-url=https://web.archive.org/web/20131031015603/http://epop.phys.ucalgary.ca/payload.html |archive-date=October 31, 2013 |url-status=dead }}</ref>
*[[Coherent electromagnetic radio tomography|Coherent EM Radio Tomography]] (CER), measuring radio propagation and ionospheric scintillation
*Fast Auroral Imager (FAI), measuring large-scale auroral emissions
*GPS Altitude and Profiling Experiment (GAP), high-precision position and attitude determination
*Imaging and Rapid Scanning Ion Mass Spectrometer (IRM), measuring the three-dimensional distribution of ions
*Fluxgate Magnetometer (MGF), high-precision magnetic field perturbation measurement
*Neutral Mass Spectrometer (NMS), measuring the mass, composition and velocity of neutral particles
*Radio Receiver Instrument (RRI), measuring radio wave propagation
*Suprathermal Electron Imager (SEI), measuring low-energy electron distribution