Sunspot Group #2192 in Oct 2014: Change of the X-class flare for 3 hours

Date & Time: Oct 25 2014, Times are displayed in image
Optical: CORONADO SolarMax 40, with 1.5× conversion lens (f=600mm, F15.0)
Auto-guided with Kenko SKYMEMO Equatorial
Camera: CELESTRON Skyris445C with IDAS IR-cut filter
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: 15 flames/sec.×8sec., Exp....1/60sec
110 flames stacked each & Wavelet process with Registax6

The large-scaled active region of #2192 in Oct 2014 had several solar explosions, the flare. This set of images shows you the appearance of a largest-scale (X-class) flare and its change chased through the Hα light. You can see the flare as over-exposed region between two principal sunspots in an image at 8:33, and the light is reducing with time course. And the images show several thin stripes between the sunspots, it's called "the post-flare-loops", the prominences with its shapes change in short time.

Full-disk image with Hα light (Oct 25)

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Sunspot Group #2192 in Oct 2014:
White-light images for 4days

SunspotGroup #2192 in Oct 2014:
Change of shape with White & Hα light

Copyright(c) 2014 by Naoyuki Kurita, All rights reserved.
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