1.25 diag for eon 120 ed

Hi,
I would like to buy a high quality diag. for my Eon 120. It will be a 1.25 diag. My oices are the TV enhanced for $140 or the TV Everbright for $190. Is the Everbright worth the extra 50 dollars. Also, I am looking into the Tak 1.25 prism diag. for $115. I know that prisms sometimes work better with ed scopes and I have found that to be the case but I'm not sure if its the prism or the fact that my mirror diag is a cheaper make. I have been satified with it but collimation seems to be slightly off. Anyway, your input really counts.
Thanx
clear skies

I found the TV Everbright is slightly better than the standard enhanced for reducing scatter around a bright planet. It isn;'t that much more money and the coatings are supposedly more durable. I say supposedly as I did notice some very slight sleeks on mine. Both of the TV 1.25" diagonals are machined from single piece of aluminum (angled body and both inlet and outlet tubes) and plate on back holdsthe mirror, so alignment is pretty much spot on.

The Takahashi prism still has the plastic body I believe, presumably the added price is a more precise prism and the clamp ring collet. The prism s do supposedly have some effect on correction but that all depends on what the objective was designed to optimize for. My TV85 works much better with the Everbright mirror than a prism.

The best prism out there is the Baader T2 but ends up being quite expensive by the time you add the focuser and eyepeice adaptors.

Dave

itz marcus said:

Hi,
I would like to buy a high quality diag. for my Eon 120. It will be a 1.25 diag. My oices are the TV enhanced for $140 or the TV Everbright for $190. Is the Everbright worth the extra 50 dollars. Also, I am looking into the Tak 1.25 prism diag. for $115. I know that prisms sometimes work better with ed scopes and I have found that to be the case but I'm not sure if its the prism or the fact that my mirror diag is a cheaper make. I have been satified with it but collimation seems to be slightly off. Anyway, your input really counts.
Thanx
clear skies