|
Thank you all for yours comments.
Derek with the Coronado 90 + BF30 I find that a 3x Barlow is about the maximum that I can use. If the seeing is poor then I switch from using the DMK51 + 3x Barlow to a DMK21 + 1.6x Barlow. I think that the faster film rate of the DMK21 is much better in poor seeing conditions especially for solar closeups.
George
|