Quote:Michael,Great observation in WL. I was surprised by the fact that you observe in WL while you have a PST at hand.
Quote:The appearance of active regions is much different in white light than in Hydrogen alpha. In WL, everything is quite stark and hard edged. Things are mostly black and white, with maybe a little grey for the penumbra. ...On the other hand, the appearance of active regions in Ha is much more subtle, with lots of swirls and color variations.
ErikaAutomatic doors make me feel like a Jedi. PCW Memorial Observatory