Are cheap zoom eyepieces worth it?

[Xilman]

On 23/02/2022 at 15:51, spacegalaxy said:

Barrel security recess - No (What does the even mean?

It generally means a groove around the barrel into which the end of the screw which holds the eyepiece to the drawtube fits. If the screw comes slightly loose the end of it is still inside the groove and the eyepiece won't drop out. If the barrel is completely smooth the eyepiece also becomes slightly loose and can fall out, a possibly expensive circumstance.

[Bugdozer]

I know I am late to the party here, but to answer something in the OP... I believe barrel security recess is a groove around the part that the little grip screws grip on, so if a screw works too loose to grip the barrel, the eyepiece can't drop out as it's still within the groove. My default Celestron eyepiece has one. 

[John]

5 hours ago, Bugdozer said:

I know I am late to the party here, but to answer something in the OP... I believe barrel security recess is a groove around the part that the little grip screws grip on, so if a screw works too loose to grip the barrel, the eyepiece can't drop out as it's still within the groove. My default Celestron eyepiece has one. 

Also known as undercuts.

It ought to be mentioned that are not universally popular 😉

[Jim L]

2 hours ago, John said:

Also known as undercuts.

It ought to be mentioned that are not universally popular 😉

Undercuts are roughly as universally popular as paper cuts.