Our Sun
Our Sun on April 22, 2015, 18:27 UT


Click here for the full-resolution version: (2400x2000)


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.

This is my first solar image; I hope to improve in both the image acquisition and image processing sides of the fun, posting photos of the changing sun frequently!

Technical Information:

This is processed from a stack of 1013 images, taken at 25 fps. I'm new at this, so this is a bit crude, but still pretty cool (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 18:27UT, 22 April, 2015; image posted April 23, 2015

Copyright Mark de Regt, 2015