Simone Tranquilli<p>Following the O-III and Ca-K images of the Sun, a series of images in H-Alpha light on the first day of the past winter session.</p><p><a href="https://www.localvoid.net/2025/03/29/the-sun-in-h-alpha-light-24-december-2024" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">localvoid.net/2025/03/29/the-s</span><span class="invisible">un-in-h-alpha-light-24-december-2024</span></a></p><p><a href="https://astrodon.social/tags/sun" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>sun</span></a> <a href="https://astrodon.social/tags/halpha" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>halpha</span></a> <a href="https://astrodon.social/tags/prominence" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>prominence</span></a> <a href="https://astrodon.social/tags/sunspot" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>sunspot</span></a></p>