Contains:  Solar system body or event
The Sun - May 09 2024, Steven Fanutti

The Sun - May 09 2024

The Sun - May 09 2024, Steven Fanutti

The Sun - May 09 2024

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This is an inverted Edge-Detect version of this image:


The Sun - May 09, 2024

For large sunspots, I sometimes convert some of my images to inverted Edge-Detect versions for printing to measure sunspot sizes using spherical geometry. I use a mathematical set to make the measurements and calculate sunspot sizes manually without a calculator. It's a fun exercise and there is a certain level of satisfaction of being able to make such calculations manually. Here is a PDF version of the image for printing and measurement.

Sunspot Measurements May 09 2024.pdf

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The Sun - May 09 2024, Steven Fanutti

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