Younger folks today in the pursuits may never have even heard of the common Ramsden popular decades ago. Often they were the oculars they'd sell as part of a package with a scope. Costs kept down, got you *into* the heavens where treasures awaited. Then , it seemed like to me the classic Kellner filled that bill and some poor barlows to join these entry level ocular set. And now? Nothing that I can see - and probably because nanufacting costs have come down so low it's just easier to make basic plossls, and that Kellner, now a RANKEN Kellner, some folks also call it a reversed Kellner.
As a lot of folks the Ramsden was a *colorful* ocular, narrow field and don't let your Saturn drift thru the field away from center! Indeed, Dave Gray enjoys his Ramsden as a kind of anti prismatic dispersion eyepiece such was the Ramsden distortion.
Today though, Ramsden is practically a unicorn and none too pretty. Does anyone - besides David Gray even have one in their ocular set?
Pete
Edited by azure1961p, 12 April 2025 - 09:48 AM.