hi

i just dug up a lens i bought years ago ..
which i believe to be a 10 1/2 " darlot rapid hemispherical.
has anyone else gotten their hands on one of these ?
will it cover 8x10?
and has anyone removed the rear element and used it as a single ?
i stuck it on a big camera without the rear element and it had a HUGE image circle ...

any ideas what i should expect image wise?
i've shot with it on a speed graphic and loved what it did, but never
without the front or back, and never on a camera bigger than 4x5 ...

i'd LOVE to remove the throat that closes down the fstop "wide open"
better yet, maybe i'll just put the elements on a board without the barrel


thanks!

john