Antares 12mm - picked up second hand here. Just fine. In fact the illumination is so good, I took it off and put it on my illuminated finderscope.
There are three controls:- 1) of/off/brightness; 2) how long off before it cycles to on; 2) how long it stays on before it cycles back to off.
No trouble with focussing on the reticule. Double crosshairs.
Details here:-
http://www.antaresoptical.com/eyepieces/1.html
http://www.scopesnskies.com/prod/118.html
Anything here? :-
http://www.cloudynights.com/ubbthrea...2/Main/3255473
On the readup, I wonder if my illuminator came from somewhere else before I got the eyepiece - they look to be simple versions on those pages.