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| 300mm, intentionally out of focus, enlarged in Photoshop |
My learn-by-doing astronomy and astrophotography blog and observing journal
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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.
the bluer the star the hotter it is which means and explains why Rigel is hotter then the others.
ReplyDeleteAnd olso since aldebaran is red orange giant it is hotter then betelgeuse because it is red
ReplyDeleteThe brigtest stars starts from red the coldest then red orange then orange then yellow orange then yellow then yellow white then when white then blue white then the hottest is blue
ReplyDeleteawsome great .
ReplyDelete