Our Sun
Our Sun on August 4, 2016, 19:29 UTC


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Sun: Our sun has a mean distance from earth of about 93,000,000 miles, and a diameter of about 864,000 miles (a little more than a hundred times that of Earth). The sun is a very active body, changing noticeably by the hour.

I had not taken a photo of the sun this year, so I took this. Nothing particularly dramatic is happening, but I always find all the structure on the sun to be fascinating.

Technical Information:

This is processed from a stack of 1013 images, taken at about 25 fps.

Equipment: Coronado SolarMax II 90 Double Stacked hydrogen alpha solar scope, with a BF30 blocking filter; images acquired with a Point Grey Research Grasshopper3 6mp CCD monochrome video camera (GS3-U3-60QS6M-C).

Image Acquisition/Camera Control: FireCapture

Processing: No calibration performed. Images stacked in AutoStakkert! 2, sharpened in Pixinsight, colorized and further massaged in Photoshop CS5

Location: Redmond, Washington, USA

Date: Data acquired 19:29 UTC, August 4, 2016; image posted August 5, 2016

Copyright Mark de Regt, 2016