Greg Nowell said:
Imagine my surprise then when I popped it into the f/6.5 refractor to check for color on the moon. The moon was in a waxing crescent phase and you could see the full outline "the old moon in the new moon's arms". My jaw dropped as I moved the moon off axis and watched it become elongated like a football.
2 evenings ago there was a full-ish moon so I went out with my 10" f/5 Dob and chose the older 24mm TV Wide Field wich gives me a degree fov +/-. It's a wonderful EP for full moon viewing. Dead center in the field it looks great. Then I did as you did and slewed it to the edge and holy cow..it looked like it was going thru a carnival mirror it became so distorted. Literally looked like it was being reluctantly sucked out of the fov! So I guess your Ye old Pan must of inherited those genetics from its father, Ye old Wide Field. I was surprised it was so dramatic. I typically just use this EP for scanning...the pincushion is obvious in scanning, just never realized how dramatic until I did it on the moon!