Are there any longer eyepiece barrels

[spaceboy]

Does anyone know of any after market longer !.25" or 2" eyepiece barrels ? IE: straight swap out the standard barrel of an eyepiece for a longer one. Probably not much demand for such a part I know but lunt blocking filter / diagonals have pretty long barrels so wondered if there are any used for imaging to extend focal distance maybe or even replacement barrels for lunt diagonals ??

[timwetherell]

Some of the older kelner eyepieces had barrels that were about 35mm long and pop up occasionally for cheap. But if you're just looking to extend, one option is to buy a really cheap barlow and take the lens out

[Stu]

You can use Baader fine tuning rings to extend 2" barrels Nick

[Louis D]

Agena Astro carries all sorts of spacer rings for 1.25", 2", and T-rings.

[michaelmorris]

Astroengineering used to sell screw in 1.25" barrel extensions.

Sorry, no idea where to get one nowadays

[Macavity]

Originally by TS (DE)??? Maybe "365" still have some in stock?
Quite a useful thing though for finding quick focus in things.

http://www.365astronomy.com/Extension-Tube-with-1.25-Filter-Thread-25mm-long.html

The "eyepiece end" of eyepiece barrels is often non-standard thread sadly? Small
extensions can be achieved with (cheap) 1.25" filters with the glass removed?