Objectives

  • Transition basic research on coronal mass ejection imagery technology to operational space weather forecasting of Geomagnetic Storms
  • Develop a low-cost and -mass, small envelope coronagraph for operational satellite

Approach

  • NOAA/GOES-R (2005): SECCHI/COR2 copy solar coronagraph considered in formulation phase but cost, mass and envelope proved problematic
  • NOAA BAA (2005): Sought innovative concepts for Coronal Mass Ejection (CME) Imagery at low cost and mass. NRL responded with the Compact Coronagraph (CCOR) concept. CCOR reduces cost, mass, and envelope with new coronagraph solar light rejection (1013) technology in combination with moderate NOAA operational requirements. A less complex sensor results in lower cost, lower mass, and smaller envelope
  • NOAA Demonstration Sensor Project (2010): Successful CCOR concept study report included subsystem protoflight demonstration at TRL 5

Deliverable/Value/Accomplishment

  • Low cost and ultimately operational solar coronagraph suitable for DoD, NOAA, NASA, and FEMA space weather forecasting needs
  • Cost: ~1/2 to 2/3 of current Lyot coronagraphs
  • Compact: can be accommodated on small satellites.
  • History: Adaption of Lyot internally occulted (1939) coronagraph to space achieved with additive external occulter hardware
  • NRL: (a) discovered one Lyot stage is redundant and can be eliminated;
    (b) developed and demonstrated (TRL 5) a superior (~102X) external occulter using new boundary diffraction wave based mathematical treatment, and consequently eliminated a second Lyot stage