Photographer snaps extremely rare 'green flash' coming from Venus

[Admin]

A brief flash of green light was recently spotted coming from Venus in the night sky. The colorful shimmer has only been seen a handful of times before.

Photographer snaps extremely rare 'green flash' coming from Venus : Read more

 

[Jan Steinman]

Looks like chromatic aberration to me! I have lenses that do that, too!

One big clue is the complementary magenta flare 180° away from the green flare. This is characteristic of CA.

So it would be interesting to know what sort of setup Rosén has. If he was shooting with a mirrored telescope, then it's more believable, since those have very low CA. But refracting lenses and telescopes all have CA, to greater or lesser extent.

 

[billslugg]

This is chromatic abberation by the atmosphere. A green flash happens every time the Sun or a planet rises or sets with clear atmosphere. It is there every single time. Any supposed rarity is due to local clouds or haze. You don't even need a water horizon. I've seen it on a sunset behind a mountain range.