The exact size of 2" eyepiece barrels

[astropolak (Joe)]

Hi everyone
Could someone precisely measure the 2" barrel diameter (metric measurement) of their Televue eyepieces.
I am not getting much help from Bintel so I have to call on you guys.
I want to make sure that they will fit in my new diagonal (my GSO SuperView 42mm does not), do not ask for the make of the diagonal - it is a well respected brand.

RGDS Joe

[ausastronomer (John Bambury)]

I have a digital micrometer at home and I will measure my 27mm TV Panoptic for you. It will be about 11pm before I can get back to you.

CS-John B

[astropolak (Joe)]

Thank you John
Incidentally, the very moment I have posted the initial thread Bintel responded with their measurement of 50.77.
I do not much care if my Superview 2" does not fit in my new diagonal but will be upset if Televue eyepieces do not.
Perhaps you can check the inside diameter of your diagonal(s).

Thanks in advance.

RGDS Joe

[ausastronomer (John Bambury)]

Joe,

I got 50.78mm on the 27mm Panoptic.

CS-John B

[janoskiss (Steve H)]

John, 0.02mm under 2 inches then. Precision!

Slightly deformed brass ring will likely be the cause of the problem, Joe.