Nicely done! The 27mm is my low power sky-scanner too.
I do have to disagree with you on one thing though:
Quote:
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Originally Posted by Fox
...Another thing that swayed me in particular was the much brighter illumination; the 2inch diam and larger field stop make a huge difference here.
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It's just the 13% or so difference in focal length (and hence magnification) are seeing here. A lower power EP will always show a brighter image than a higher power one. It's nothing to do with one EP being a 2", the other a 1.25". And the larger field stop is simply because field stop has to increase in proportion with focal length if the apparent FOV is to stay the same. The difference in focal length implies a 27% greater brightness for the 27mm over the 24mm. In the same way the 24mm would be brighter than the 19mm (and they're both 1.25"). Sorry to labour the point, but I don't want people getting the wrong idea here that the bigger barrel simply lets in more light.