HAO Colloquium - Phil Judge, HAO

SOLAR ECLIPSE OBSERVATIONS FROM THE GROUND AND AIR FROM 0.31 TO 5 MICRONS

We report on characteristics of solar spectra and polarization as revealed by a diverse suite of instruments deployed during the 21st August 2017 total solar eclipse.  Four students (three undergraduates and Jenna Samra, PhD candidate at Harvard) were deeply involved. 

The main goals of our coordinated ground-and-air campaign were to survey and sample complementary measurements at thermal infrared wavelengths, and to test new technology for measuring polarized light in the corona.  We describe the instruments and preliminary calibration inter-comparisons. The instruments comprised a newly developed coronal imaging spectrometer, AIR-SPEC, developed and flown by the CfA team at 14 km altitude on NCAR's GV aircraft above Kentucky, supported on the ground by observations from Camp Wyoba on Casper Mountain, Wyoming (2402 m altitude). There, we deployed a new infrared Fourier Transform Spectrometer (NAI), three low dispersion spectrometers loaned to us by AVANTES, and a novel visible-light camera POLCAM, sensitive to linear polarization. We present preliminary data, including spectra of the chromospheric flashes, prominences, and the strongest coronal lines from 310nm to near 5.5μm.

 

Building:

Room Number: 
2126

Type of event:

Will this event be webcast to the public by NCAR|UCAR?: 
Calendar Timing: 
Wednesday, January 17, 2018 - 2:00pm to 3:00pm