I am still new to this game
but I think I am improving. Still can't quite manage to get the clarity I see in some other images from a similar sized scope.
I use an Orion 12 in XTG and a barlow 2.5x or 3x . Imaged with a DMK41. On rare occasions I use both barlows together stacked but it is near impossible to focus at that magnification so I usually just stick with one or the other.