Our Sun
Our Sun on May 28, 2015, 17:43 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 liked this view the sun gave us today, because of the two filaments that show as both flares and as filaments against the solar surface (at about 2 o'clock and 4 o'clock on this image)

Technical Information:

This is processed from a stack of 1026 images, taken at 25 fps. (IMO).

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 Registax 6, and further massaged in Photoshop CS5

Location: Redmond, Washington, USA

Date: Data acquired 17:43UTC, 28 May, 2015; image posted May 28, 2015

Copyright Mark de Regt, 2015