My latest deep integration of the Whirlpool Galaxy (M51) captured from Fregenal de la Sierra, Spain. This dataset combines broadband LRGB with 15 hours of Hydrogen-Alpha to reveal star-forming HII regions across the spiral arms and in the interacting…
![M51 – The Whirlpool Galaxy in LRGB + Hα [42 Hours]](https://preview.redd.it/l76f9smyerxg1.png?auto=webp&s=865ecbf608fc36844a9f1575758d30d2343556af)