How do you describe the end of an eyepiece?

[bendiddley]

Curious. What do people call this? I’ve heard it referred to as a barrel. Some call it a nosepiece. Is there a standard term?

Edited November 17, 2021 by bendiddley

[NGC 1502]

Either term is appropriate, some call it a “chrome barrel” but of course some barrels are black anodised.

 

[Louis D]

I tend to call it the insertion barrel to distinguish it from the upper barrel holding most of the optics.  I don't know that anyone else uses that term, but I wanted something unambiguous when describing eyepiece parts.

Next question, what do we call the point where that barrel ends and flares out to prevent the eyepiece from going in any further?  I tend to use the term shoulder, Tele Vue calls it the reference surface.

[bendiddley]

Thanks guys

[Ian McCallum]

I just call it 'Fred'.🤣🥼🚪

[Mr Spock]

Which end? 

[Don Pensack]

lens nearest the eye: eye lens

lens nearest the scope: field lens

tube the lenses are in: Upper barrel and lower barrel.  Lower barrel also called the insertion barrel

 

[jock1958]

7 minutes ago, Don Pensack said:

lens nearest the eye: eye lens

lens nearest the scope: field lens

tube the lenses are in: Upper barrel and lower barrel.  Lower barrel also called the insertion barrel

 

Nice one Don, always wondered what to call the different parts of the eyepiece! 

[Zermelo]

3 hours ago, Louis D said:

Tele Vue calls it the reference surface

If I ever manage to convince myself to buy a Tele Vue, I would definitely want them to be calling it a reference surface.