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, 2x PowerMate (for a focallength of 4700mm), 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 13ms and 26 fps.

The raw recording can be viewed here: https://youtu.be/8kelyROXHQo

Comments

Histogram

AR 12403 on August 22nd 2015, Arne Danielsen