Re: Testing telescope eyepieces

The short answer is in any regard.

The only test method I find on searching the Internet is subjective tests on astronomical objects using objectives of (possibly) varying quality.

What I'm wondering is if there is some way to quantitatively test an eyepiece alone without any supporting optics that need to be separately tested, or accounted for. (tests for nodal points, exit pupil position, etc. are not included in this discussion)

There have been suggestions of testing an eyepiece by using it in a telescope to view resolution targets. This seems to me to rely on the quality of the objective.

Certainly, if one had the design parameters, one could see what the theoretical performance of an eyepiece is, but how do you tell if the manufacturer built it according to the design.

All I've heard from people is "Try it and if you like the performace, then it's a good eyepiece."




Richard J Kinch wrote:
Bill Turini writes:

How are telescope eyepieces quantitatively tested?

That covers a lot of possible characteristics and tests. Tested in what regard? Something inexpensive or big-budget?
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