ظهر بصري 2 بوصة لـ ESATTO 2 بوصة و ARCO 2 بوصة

Swapped the focuser over to this visual back and the M56 thread engaged perfectly, no adapter gymnastics needed. The 2" opening is snug and holds my diagonal without any wobble, so star hopping finally feels solid. Exactly what I needed to get the most out of the focuser.

I was worried about thread compatibility, but the M56 to M81 threading on this back matched my focuser perfectly and the 2" eyepiece insert locks in tight without any wobble. Night-and-day difference for switching between visual and camera use now.

Finally, a clean way to use my 2" eyepieces without that awkward step-up adapter. The M56 thread screwed right onto my focuser and holds the eyepiece securely with no wobble. A simple upgrade that makes a big difference in ease of use.