Image

Fe XIV (530.3 nm) and Fe XI (789.2 nm)

This color image is a composition of this Fe XI image (red) and this Fe XIV image (green).
Click on the image or on the following reference to display the higher resolution image version (1.6 MB, PNG format).

ImageFe_XI_Fe_XIV_NoCont_Mitchell_ACHF.png
Date21. 08. 2017
Time2nd contact 17:21:11 UT, 3rd contact 17:23:14 UT
Placenear Mitchell, Oregon, USA
CoordinateN 44° 31.539',   W 119° 54.459',  Alt. 1100 m
ConditionsClear sky but some smoke from forest fires, solar altitude 43° above horizon
Optics4× Achromat 4/300 mm equipped with following narrow band filters:
  On-band filter: Andover, center wavelength: 530.3 nm, bandwidth 0.5 nm
  Off-band filter: Andover, center wavelength: 527.3 nm, bandwidth 0.5 nm
  On-band filter: Andover, center wavelength: 789.2 nm, bandwidth 0.5 nm
  Off-band filter: Andover, center wavelength: 786.1 nm, bandwidth 0.5 nm
Camera2×Atik 314L (Fe XIV) and 2×Atik 414EX (Fe XI)
Exposure0.05 - 6.4 s
ProcessingComposition of 126 eclipse images (Fe XIV: 32 On-band and 32 Off-band, Fe XI: 31 On-band and 31 Off-band,) taken with 4 cameras. Images were calibrated by means of dark frames and flat-fields, aligned by means of phase correlation, composed by means of LDIC 6.0 software, continuum was removed from emission by subtracting the Off-band images, than resulting image was processed using Corona 5.0 software in order to visualize coronal structures. Final processing was done using ACC 6.1 software.
Image processing by Miloslav Druckmüller
SoftwareAstro D3F 2.0, PhaseCorr 7.0, LDIC 6.0, Corona 5.0, Sofo ACC 6.1
Copyright© 2017 Miloslav Druckmüller, Shadia Habbal, Pavel Štarha, Judd Johnson,
    Jana Hoderová
 


Miloslav Druckmüller
Institute of Mathematics, Faculty of Mechanical Engineering
Brno University of Technology, Czech Republic
druckmuller@fme.vutbr.cz
Page last update: 26.11.2019