مخفض/مسطح 0.77x لتلسكوب Esprit 120 (S20209)

Finally got this reducer dialed in on my Esprit 120, and the drop from f/7 to f/5.4 cut my sub-exposure times noticeably. The 95mm back-focus with the included spacers was easy to set up for a full-frame sensor—zero vignetting even at the edges.

I was worried about the back-focus math, but the 95mm specification worked perfectly with my setup. The drop from f/7 to f/5.4 has already cut my exposure times noticeably.

Cut my exposure times by over a third compared to native f/7, and the 34mm fully illuminated field covers my full-frame sensor without any corner artifacts. Setup was straightforward with the included spacers to get the correct 55mm back focus.