Thanks JA
Yes, the required compression certainly kills a lot of detail.
The sun stars are prominent at F5.6 with this lens, which i was really happy with, as that was exactly the look i wanted from this image.
I have a 200mm F4 too, and the sun stars are as prominent at F8, but then obviously your exposure time is increased.
Really happy with the 180mm lens so far though.
Looking forward to the next new moon
Cheers
Bob