Diurnal motion of the eclipsed sun (Aug 21, 2017)


Date & Time: Aug 21 2017, from 10:06:40 to 10:31:00 PDT(-0700)
Composed 9 shots of 8 partial eclipse with 1/4000sec exposed + a totality with 1/125 sec ×2shots
Optical: BORG 60ED with a correction lens (f=378mm, F6.3)
with BaaderPlanetarium AstroSolar filter (Used in partial eclipse)
Auto-guided with EYEBELL CD-1 portable Equatorial
Digital Camera: Nikon D810A
Location: Salem, Oregon, USA

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(7360×4912)
Device Size...FX format (36×24mm)
Sensitivity...ISO400 (Partial eclipse), ISO800 (Total eclipse)
White Balance...Daylight




This image shows you a nine-composed scene of a total solar eclipse on Aug 21, 2017 for 25 minutes across the maximum totality. Individual solar images have been aligned according to the diurnal motion of sun, the picture has been displayed turning the zenith direction upward.
I was blessed with a clear weather affected with no clouds, I obtained flawless images of partially eclipsed sun across the totality.





Brightness distribution of the white-light corona

Snapshot during observation of the total solar eclipse


Copyright(c) 2017 by Naoyuki Kurita, All rights reserved.
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