My 6mm Delos came to the house this week. I am anxious to give it a shot in the field but a few things stand out and I wonder your thoughts on these characteristics.

1) Looking through it into the light of a room I see significant vignetting without careful eye placement. This is troubesome relative to my 7mm Nagler
2) The glass that is exposed relative to the eye is enormous to say the least. I guess that it is almost required to pull out the protective extenstion in practical use to both help center the eye and protect the glass from eyelash.
3) These things are extremely long. So long that I suspect my current eyepiece case will not be deep enough.

Thanks,
Mark