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Total Solar Eclipse in United States August 21, 2017 | by hirocun
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Total Solar Eclipse in United States August 21, 2017

I intended to see streamline of solar corona as long as possible with this telescope of short focal length and with less vignetting. Long extended strong streamlines of corona looked a bit bluish, and temperature of solar atmosphere in them may be a bit higher than other relatively yellowish or greenish part. They were extended long beyond this frame, and I need another shorter optics next time.


This is a simple overlay of multiple length exposure frames and 40% of 5-degree rotational blurred subtraction image. North is up approximately. I misaligned the camera clockwise by 5.8 degrees, and the objects are rotated counterclockwise by the angle compared to equatorial coordinate system on my eclipse frames .


equipment: William Optics Star 71mm f/4.9, 350mm in focal length and Canon EOS 5Dmk3-sp4, modified by Seo-san on iOptron ZEQ25GT


exposure: 1/8000 sec, 1/2000, 1/500, 1/125, 1/30, 1/8, 1/2, 2 sec, and 8 sec at ISO 100 while live viewing with no filter on the scope during the total

The first exposure was at 17:22:34UTC.


I have excluded some of long exposure frames, 4 sec, 1 sec, and 1/4 sec, taken near the end of totality, because their halo into the moon influenced badly.


site: 1,836.3m or 6,025 feet above sea level at 44 40 06.35 North 119 02 59.93 West near the summit of Long Creek Mountain in Oregon

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Taken on August 21, 2017