Quote:
Originally Posted by koputai
Guys,
I obtained my 7mm Ultra a few days ago and tried it out last night.
With this shorter focal length, the ghosts are often right on the object being observed.
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From my perspective, I've never had the chance to use Naglers, but I certainly never expected the Siebert to compare with one, despite what it says on his website. The Naglers are double the price (and TV has economies of scale compared with Siebert, though perhaps offset with higher overheads). For it's price range, I'm pretty pleased with the Siebert (after one nights viewing anyway!), and it adds a new dimension to my current EPs.
I've seen brighter reflections than the Siebert (my 14 mm "ED2" for instance), but never so many! With the 15 mm, they are away from the object and I would estimate them at 10% the brightness of the object, like I said I wouldn't expect to be using the 15 mm for planets or splitting hard doubles anyway. However, I can imagine that at a shorter focal length (e.g. your 7 mm), which one is obviously more likely to use for planets, those reflections would be annoying, as you indicate.