The Jet Propulsion Laboratory (JPL) Solar Polar Sail Mission concept potential instruments include:

White-Light Coronagraph
All-Sky Imager
Plasma Analyzer, Magnetometer, Energetic Particle Spectrometer

Possible Additions:

Doppler Imager
X-ray/EUV Imager(s)

The image shows a possible orbit and heliospheric density structures that might be observed by an All-sky Imager on board the Solar Polar Sail mission.