Contains:  Solar system body or event
AR 12403 on August 22nd 2015, Arne Danielsen

AR 12403 on August 22nd 2015

Acquisition type: Lucky imaging
AR 12403 on August 22nd 2015, Arne Danielsen

AR 12403 on August 22nd 2015

Acquisition type: Lucky imaging

Equipment

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Acquisition details

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Description

Close-up image of the AR 12403 from August 22th 2015. A scaled image of Earth has been added for size reference.

The image was obtained using a Celestron 9.25” XLT with a full aperture Baader photographic solar filter, 4x PowerMate (for a focallength of 9400mm), Solar Continuum filter and a PointGrey Grashopper GS3-U328S4M camera. Everything mounted on a SkyWatcher EQ-6 AZ and autoguided with a Hinode Solar Guider.

Stack of sharpest 240 images out of 1200 obtained with an exposure time of 40ms and 26 fps.

Comments

Histogram

AR 12403 on August 22nd 2015, Arne Danielsen