Posidonius

[johnfosteruk]

Crazy magnification for this but I wanted to push it and see what I could do having spent a good 45 minutes studying this fascinating crater the previous night. With 2x2.5 barlows stacked for a focal length of 8125mm this is way beyond what a 4" should be made to do, especially with a bayer matrix in the way!

[Demonperformer]

Wow, John.  That is a great result for such extreme settings.