Change of the Diamond Ring of Total Solar Eclipse on Aug 21, 2017

At the second contact

At the third contact

Date & Time: Aug 21, 2017 PDT(-0700), 1/8000sec. ecposed each
Optical: BORG 60ED with a correction lens (f=378mm, F6.3)
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...ISO200, White Balance...Daylight

This page shows you the time changes of the "Diamond Ring" for approximate 25 seconds appeared just before the second contact and right after the third contact of the total solar eclipse on Aug 21, 2017. The images have displayed by turning the celestial north direction upward. The dazzling light is from the solar photosphere, and you can detect the reddish molding light in vicinity. The light is the chromosphere that surrounds the solar surface; especially you can see that three comparatively larger-scaled prominences are stretched from the western chromosphere.

Time-lapse movie of all progress of Total Solar Eclipse

Baily's beads, chromosphere & prominences during the totality

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