I also turned my scope to Venus, and was able to identify its current crescent phase - however the chromatic aberration is quite apparent on this old refractor. Notice how the red and blue ends of the light spectrum don't quite line up - which means the lens is effectively acting like a prism when it is not supposed to.
My learn-by-doing astronomy and astrophotography blog and observing journal
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Sunday, December 1, 2013
Tiny Things at Prime Focus: Albireo and Crescent Venus
I also turned my scope to Venus, and was able to identify its current crescent phase - however the chromatic aberration is quite apparent on this old refractor. Notice how the red and blue ends of the light spectrum don't quite line up - which means the lens is effectively acting like a prism when it is not supposed to.
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