Sunspots / Active Regions
Taken by Arnold L. Rivera on April 18, 2022 @
Edmonton, Alberta, Canada
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Camera Used: Unavailable Unavailable
Exposure Time: Unavailable
Aperture: Unavailable
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Date Taken: Unavailable
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Details:
The active regions AR12993 and 12994 rotated onto the solar disk yesterday and produced an X-class flare earlier today.
All images were taken with a ZWO ASI174MM (monochrome CMOS) camera:
1) White light image: using an Astro-Tech AT130EDT f/7 refractor with Baader Planetarium AstroSolar filter
2) Hydrogen-alpha image: using a Lunt LS80THa DSII f/7
3) Calcium K-line image: William Optics Zenithstar 70ED f/6 with a Lunt Calcium K module
Last image: full solar disk in Calcium-K frequency
Photographer's website:
No URL provided.
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