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Originally Posted by Dave47tuc
I was so keen to get a look at these pentax’s. The night was partly cloudy with seeing around 7/10 (correct me if I’m wrong Geoff)
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Hi Dave, if you say the seeing was 7/10 I wont argue with you. I dont bother with trying to put a number to it without a meaningful frame of reference.One persons 7/10 might be anothers 8/10 or 5/10
My seeing scale goes something like this:
Dont bother, crappy, average, above average, good, excellent and woohoo !
I would have rated it as "above average/good" with moments of good to excellent
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Eye relief is great in these eyepieces. But you do need to get use to putting your eye in the right spot. If you move too much you can get black out. Once I got use to using them it was not a problem.
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I noticed that the XW with its slightly wider field than the XL, that the eyecup cannot be wound up as high and still allow viewing of the full fov.
The eyecup on the XL allows you to set it and puts your eye easily in the right place everytime and may have a small advantage over the XW in this regard. Its not a big issue and I certainly wouldnt say that the XW is hard to use.
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Geoff thought the background was a little darker in the XW but I found it hard to see that.
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Maybe I only saw it because I read a very
in depth critical review of the XL vs XW here.
I thought I could notice a slight brightening of the background between members of the star cluster we were testing on using the XL. Its hard to be sure about such minor subtleties as the minds eye can loose the real picture in the time it takes to swap over an eyepiece. Maybe it was in my imagination planted by the suggestion in the article
Conclusions: Both the XL and the new XW are great eyepieces with very little difference between them
