04-21-2024, 07:16 PM
Quote:The white-light sun is a blinding ball of featureless light. But... if you filter the light, and look only at the narrow range of wavelengths emitted by hydrogen, the true sun is revealed. This weekend in Kentucky, amateur astronomer Richard Schrantz used a spectroheliograph to do just that, and here is what he saw:
https://spaceweather.com/images2024/21ap...ograph.jpg
https://spaceweather.com/archive.php?view=1&day=21&month=04&year=2024