Image | TSE_2020_djm_comets-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 | (1) Canon EF F2/100mm (set to F2.2) (2) Nikkor 80-400mm 1:4.5-5.6G ED VR (set to FL 400 mm, F5.6) |
Camera | (1) Sony Alpha 7S (2) Nikon Z6 |
Exposure | (1) 62 images 1/40 s, ISO 400 (2) 55 images, 1/640 s - 3 s, ISO 100 |
Processing | Composition of totally 117 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 Nick James and Andreas Möller |
Software | Astro D3F 2.0, PhaseCorr 7.0, LDIC 6.0, Corona 6.0, Sofo ACC 6.1 |
Note | The comet images were processed separately. The sky background was subtracted and the steep brightness gradient was removed. |
Orientation | Image must be rotated 1.9° clockwise to achieve standard orientation i.e. solar North up. |
Copyright | © 2020 Miloslav Druckmüller, Nick James, Andreas Möller |