Hi Andrew,
Thanks for that link, and no I hadn't seen it before- quite comprehensive that's for sure. It's quite long and detailed so I had to stop short, will read the rest later on tonight.
Here's a CN review of the ES 4.7mm 82deg I'm contemplating on buying. Aye, been having this contemplation for the past 6mths, but it's crunch time now.
I realise you guys aren't talking about the 4.7mm, but I think this maybe worthy of attention (from the link I just gave)...
Quote:
.... I spent time looking around the terminator (at Theophilus last night), and noticed that the ES has an issue with glare from bright objects out of the FOV. When looking at the bright lunar limb, there was a nice sharp defining line. But move away from the moon farther, and a bright reflection filled the view.
.... When I held my head back and looked at the exit pupil, it was easy to see that as soon as I moved the moon out of the view and the pupil went dark, a crescent reflection appeared around where the exit pupil had been. Checking the barrel end today, I noticed that the ring holding the bottom lens in place does not have any anti-reflection threads cut into it, and the chrome barrel filter threads are not blackened either.
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I'm okay to make that compromise for the price of the ep and other good points it seems to have, price being one of them. It's mainly for splitting stars, observing the Homunculus in eta Carina and for bright dso's that can handle that magnification for times when I can go beyond my XW7mm. But the Baader still may win out for me on other points which I'm impressed with. Won't go into it here as I don't want to go off topic.
As Daniel stated below, and what I've always been led to believe, there can be differences in quality across different focal lengths which especially make themselves shown in fast scopes. The ES range confuses this issue more as they offer three (68, 82, 100) deg. fov's.
