|300mm, intentionally out of focus, enlarged in Photoshop|
Thursday, November 7, 2013
Color Comparison: Betelgeuse, Aldebaran, and Rigel
I took blurry photos of some popular stars to spread their light over more pixels to give a better representation of their color. Hotter stars are white and blue, while cooler stars are red, orange, and yellow. I looked up the surface temperatures of each on Wikipedia. Obviously the image is a composite since these stars aren't right next to each other in the sky. I used the same camera settings for each, so Aldebaran is slightly dimmer.
Rigel is my favorite star by the way! Comparing the color of Betelgeuse and Rigel was the subject of one of my very first blog posts: Orion constellation with star labels with my point and shoot camera back in 2012.