Re: Follow up to field flattener posts
- "If I move my eye around in the eyepiece the stars begin to get
elongated and the direction in which they elongate moves as I move my
I wear glasses to correct astigmatism, but I take them off when I
observe. What you are describing is exactly what I see with longer
focal length eyepieces. I had a 32mm Televue Plossl that was virtually
unusable, for me, with an F6 scope. With my glasses, I could get pin-
point stars, but without them, the stars would elongate in the
direction I moved my eye.
For me, I find this issue goes away with an eyepiece that provides an
exit pupil of 3mm or less. I have a 19mm Panoptic that is sharp all
the way to the edge.