Siebert Starsplitter, BO/TMB, or UO HD ortho?

Hi all, I'm in the market for a 7mm ep for my 12.5" f6 Dob for visual lunar and planetary work. After reading countless reviews I've decided that these three are my finalists, mainly because they fit into my price range. I'm probably leaning towards the 6.9mm Siebert because of the larger AFOV and the fact that I already own a few of the Performance series ep's and they work exceptionally well in my scope. I've also read good reviews on the other ep's. Any input would be greatly appreciated. Regards, Doug

hi Doug

sounds like you've picked out some sensible options. I've had very positive experiences with the UO HD 7mm ortho. I find these are very sharp and have excellent throughput. i also have a couple of starsplitters in the very short focal lengths which perform exceptionally too. My experience is that the UO has fractionally better contrast but the starsplitters are very sharp and have better eye relief. both are superb performers and IMHO some of the best value for money available.

all the best

Tim

The TMB/BO or Teton Planetary EPS http://www.tetontelescope.com/index.php?cPath=23_56_67 7mm are cheaper and will perform very well with the 60° FOV. I have a whole set of these EPs and find them to be quite good, even in a f/4.3 scope.

Love both my 3.9 Starsplitter and my UO 5 & 6HD Orthos. I get about the same FOV with these 3, of course the 6 gives a tad more. My f/4.7 gets about 308X out of the Siebert, which is about as far as I have pushed my 10" DOB so far.
Also just got a 15 Ultra from Harry and have one of his 26 Performance EPs as well.
Good luck with what ever you decide on.
I know I'm always looking after having had a wide selection of TVs a year or two back. After the UO Orthos the TVs had to go!
Al