Quote:
Originally Posted by Renato1
It depends what size eyepiece you are talking about. If you are talking 1.25" eyepieces, the field of view from a 32mm standard plossl is around as big as you are going to get (which won't be much bigger than in a 25mm wide angle eyepiece). If you use a 40mm eyepiece you see the same field as you would have seen in the 32mm, you have a brighter image with a bigger exit pupil, but it feels like you are looking through a tunnel to see the image.
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Yes, if you are shopping for "affordable" 1.25" eyepieces, 32 mm Plossl is about as long as it is worth going. E.g. take a look at BinTel's range of their own-brand Plossls:
http://www.bintel.com.au/Eyepieces-a...6/catmenu.aspx
All of them have an Apparent Field of View of 50 degrees, EXCEPT for the 40 mm, which has an apparent Field of View of only 43 degrees, which gives it pretty much the same ACTUAL Field of View as the 32 mm, but you get the impression of looking through a cardboard tube because of the narrower Apparent Field of View.
I presume this is a fundamental limitation of the Plossl design, because you seem to see a similar reduction in Apparent Field of View from other manufactures of 1.25" Plossl eyepieces as well.
You you can get a wider Apparent Field of View if you go up to 2" eyepieces, and you don't have to spend a lot more money; e.g. the BinTel "SuperView" range:
http://www.bintel.com.au/Eyepieces-a...7/catmenu.aspx