27 televue through a barlow?

Is it possible to take a 27mm Tele vue Panoptic and use a 2x barlow (standard celestron) without losing quality?
Thanks.

Yes, you can barlow the 27 Pan with great results. You will need the Panoptic barlow interface, however.

http://www.buytelescopes.com/product.asp?t=55&pid=1082&m=3

Would this be a good match with my xt12i? I plan on buying these 2 eyepieces:

Tele Vue 27mm panoptic 2"
TeleVue 13mm Nagler Type 6 (used on AM for $240)

Since i'm on a budget I can only afford to ep's. Would I be smarter by going with a ep less than 13mm to go with the 27mm?

Thanks.

So what is a radian ep, what does it do? Just a different style ep like panoptic, made differently?