1. Science with NCAR’s G V aircraft during the 21 Aug 2017 total solar eclipse
Greatest eclipse 18:25:28 UT

3. Science experiment: 2-12 micron spectrum of the corona and prominences
Unexplored spectrum, unique magnetic diagnostic potential
CoMP/ uCoMP/ COSMO
ATST 2019, NIRSP instruments
Increasing magnetic
sensitivity
Predicted not observed

4. Red: 13,000 ft (Mauna Kea, 3.4mm H20)
Black: 41,000 ft (Sofia)
R=2000

5. Why use a high altitude aircraft?
access to IR 2-12 microns
atmosphere more transparent: H2O
totality increased x1.4 or so
relative motion of lunar and solar disks reduced
UV (310 nm)
improved seeing (TBD)
No “weather”

6. experiments?
Infrared (2-12 micron) eclipse spectrum (corona, prominences)
IR imaging in visible and IR coronal lines (Mg VIII, Fe XI,..)
polarization?
near UV? (Fe XIII nm, Fe X nm…)
Flash spectrum? (chromosphere)
Atmospheric chemistry?

7. collaborations? (red already contacted)
S. Habbal, J. Kuhn, H. Lin: U. Hawaii
S. Jaeggli, C. Kankelborg: Montana State
L. Kleint: Stanford
De Luca, Golub et al.:Harvard-Smithsonian CfA
M. Penn: NSO
J. Pasachoff: Williams …

8. The end

9. 2-12 micron spectrum of the corona and prominences
The need for moderate resolution spectroscopy
Require accurate
wavelengths relative
to telluric absorption