Evostar 80 用 減焦/修正鏡 (0.85x) (S20200)

I was worried about vignetting on my APS-C camera, but this reducer flattened the field edge-to-edge and still let me capture the whole Veil Nebula in a single frame. The 0.85x reduction brought my f/7.5 scope down nicely for 90-second subs without star bloat.

Setup was straightforward and it threaded right onto my Evostar without any issues. With the reducer, my stars are noticeably sharper across the whole frame, and I'm getting nearly 30 minutes of guiding before needing a calibration.

Was a bit skeptical about adding a reducer to my Evostar, but the correction across the field is spot-on—stars are sharp edge to edge now. Setup was simple and it threaded on without any issues.