An annular solar eclipse occurs when the Moon covers the Sun's center, leaving the Sun's visible outer edges to form a "ring of fire" or annulus around the Moon. Observing such an eclipse in H-alpha light, which is a specific spectral line of hydrogen, can provide valuable insights into the Sun's chromosphere and prominences.

For the October 14, 2023, annular solar eclipse, this H-alpha view highlights the chromospheric features and prominences. Observers using specialized solar telescopes equipped with H-alpha filters would have been able to see the eclipse with more details and observe any solar prominences that were present during the eclipse.