Thinking about trying a Brandon 20mm in my AT72ED - Opinions?

[jjohnson3803]

I'm thinking about getting a Brandon for my 72ED f6 refractor as an experiment since I've read generally positive comments about them.  My most expensive EPs currently are Vixen SLVs, which I've been happy with.  Worth a try or should I save my astro funds for something else?  (I usually wear my glasses when observing, so LER is important to me.)

Thanks!

 

[Highburymark]

They are not really designed for fast scopes unfortunately. On axis views would be great, but expect to see fuzzy stars around the field stop - even though the AFOV is relatively narrow.
I do like the idea of minimum glass eyepieces at lower powers though. Widefields tend to dominate at that end of the market, yet if you don’t mind a narrower fov, top quality minimum glass eyepieces (including the best microscope EPs) can improve transmission and contrast of DSOs - for example squeezing out more detail of galaxies and nebulae.