Ap traveler EDT VS EDFS with 27tvph!

hi guys,

i'm looking for some info i can't find on the web.
i'm a proud owner of a traveler EDT, recently i bought the ap telecompressor 27tvph, i noticed the following:

with the ap prime focus adapter i can't reach focus!! LOL
the focus is inside,i can't absolutely think about it nor believe it, because on the web sometimes i found nice shots with traveler and 27tvph.

now my question is:

Is the EDT optical tube longer than the EDF??
there are other camera adapter i can use with success??

i've tried too the short nose 2" dedicated for CCD, but stars at corners are terrible.....

i need a flatten image and a compression factor among 0,75x 0,80x.

ps. my traveler is 49,4 cm from dew shield collapsed to rear eyepieces holder.

many thanks rof reply.
Christian

I can't speak for the difference between the two. The 27TVPH does not really do much for flattening the image. You would want a dedicated flattener #67PF462. This poses an interesting question......Can the 27TVPH be used with the 67PF462???
I'll have to give it a try some night.
Perhaps Roland will chime in with an answer before I have some clear skies.