Quote:
Originally Posted by JeniSkunk
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Yeah, thanks for the link: I think you are right. However, for Brendon's information: the "modified achromat" is an eyepiece with three glass elements (sometimes one element can be acrylic), unlike the plossl, which has 4. This may mean that they can actually show a slightly brighter field than the plossls, as there are less elements and surfaces for the light to pass through. They generally have a relatively narrow field of view: ~ 45-50 degrees apparent field, which is pretty standard for entry level eyepieces, and are usually well corrected for chromatic aberration and quite sharp across most of the field.
Bottom line: they should give a good view for a beginner until you know the difference and want to upgrade to (say) a wider field of view.
All the best,
Dean
(PS: the link to the International Astronomy Forum may not work: the Forum is defunct thanks to a succession of idiot cyber attacks (some people
really need to get a life!!!) and a lack of funds to protect the site and prevent further attacks. Most users have now transferred to The Sky Searchers:
https://theskysearchers.com )