Imaging the E-Corona (Emission corona) through the Fe XIV line which millions time fainter then the photosphere.
JSolex 3.3.2 ImageMath E Corona Script
Improved setting by Olivier Aguerre# Reference (darkest line) of the scan (in Å)
refWl=5302.29
# Corona-E line (in Å)
targetWl=5302.90
# Continuum shift 1 (in Å)
c1=5301.5
# Continuum shift 2 (in Å)
c2=5303.6
# Fe XIV FWHM (in Å)
targetWl_fwhm=0.2
Original setting by Cedric Champeau
# Reference (darkest line) of the scan (in Å)
feI=5302.29
# Corona-E line (in Å)
feXIV=5302.86
# Continuum shift 1 (in Å)
c1=5301.84
# Continuum shift 2 (in Å)
c2=5303.44
# Fe XIV FWHM (in Å)
feXIV_fwhm=0.2
I made also 66 scans using my Sol'eX Pro 2nd Gen slit. JSolex 3.3.2 is used to stack the images. Editing was done using CS4, AstroSurface and DeNoise AI.