Quote:
Originally Posted by tnott
Many (most) eyepieces do not handle the steep cone of light form a fast scope and show astigmatism at the edges (seagulls). A coma corrector will not help here. With a cheap widefield you won't even see the coma for the astigmatism!  |
It is 'seagulls' that I do see, come to think of it. Yet the RKE shows so little astigmatism! I'll have to recheck at another time for what distortion it does show. It really does perform very well in this f/4 scope. I love it.