Comet C/2020 X3 SOHO
A small Kreutz sungrazer comet is visible in the image of the solar corona obtained during the total
solar eclipse. This comet was discovered in SOHO LASCO images by amateur astronomer Worachate
Boonplod on December 13, 2020, the day before the total solar eclipse. The size of the comet nucleus
was approximately 15 m. During the eclipse observing it was about 4.4 millions km far from the
solar surface and it disintegrated few hours before perihelion (0.005 AU). The image of the comet
itself is very interesting as the comet's head had unusual orange-red color and the comet had
two tails. The white one is the dust tail. The orange-red color of the second one and the comet's head
is very likely caused by neutral sodium emission. Strong neutral sodium emission was observed in
comets spectra very often and some comets had rather prominent sodium tail.
Comet C/2020 F3 NEOWISE is a
very nice example.
This image is oriented so that the solar North is roughly on
the top. If you prefer the orientation as it was visible in the sky see
this image version.
Click on the image or on the following reference to display the
higher resolution image version (3.4 MB, PNG format).
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Image | Tse_2020_C_2020_X3-rot.jpg |
Date | 14. 12. 2020 |
Time | 2nd contact 16:07:59 UT, 3rd contact 16:10:04 UT |
Place | Fortin Nogueira, Neuquen, Argentina |
Coordinate | S 39° 57.680', W 69° 59.576', Alt. 485 m |
Conditions | Clear sky for 85 s of totality otherwise thin clouds Solar altitude at mid-eclipse 72.4° above horizon |
Optics | Nikkor 80-400mm 1:4.5-5.6G ED VR (set to FL 400 mm, F5.6) |
Camera | Nikon Z6 |
Exposure | 1/640 s - 3 s, ISO 100 |
Processing | Composition of 55 eclipse images. Eclipse 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, processed using Corona 6.0 in order to visualize coronal structures. Final processing was done using ACC 6.1 software. Image processing by Miloslav Druckmüller Images acquired by Andreas Möller |
Software | Astro D3F 2.0, PhaseCorr 7.0, LDIC 6.0, Corona 6.0, Sofo ACC 6.1 |
Note | The comet image was processed separately. The sky background was subtracted and the steep brightness gradient was removed. |
Orientation | Image must be rotated 5.29° clockwise to achieve standard orientation i.e. solar North up. |
Copyright | © 2020 Miloslav Druckmüller, Andreas Möller |
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Miloslav Druckmüller
Institute of Mathematics, Faculty of Mechanical Engineering
Brno University of Technology, Czech Republic
druckmuller@fme.vutbr.cz
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Page last update: 30.1.2021
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