Practical Astronomy Show - See what you missed!

[Fozzie]

18 minutes ago, Lockie said:

At f11 even a semi apo should be pretty apo...in theory. It is crazy why they don't just tell you the Abbe number for ED glass. We should petition for this   

Thats part of what makes me question what im buying, I came very very close to the AAf11ED, and I was planning to visit the show, but for a sicky baby and nasty letter from HMRC I would have, and would probably have walked away with one.. but at the back of mind, having owned a aa72mm ED which they themselves termed a semi apo due to fringing why all of a sudden, across numerous quarters a hush on this element..the new 72mm ED skywatcher and 150ED, now the AaF11.. surely as a consumer you've a right to know the fuel they run on..

[Fozzie]

Oh and apology to @paulastro for the tangent in the thread, totally my fault.

[Chris]

Absolutely right Fozzie, and my apologise to Paul too, I'm equally to blame of course.

cough, back on track