مخفض 645-CA 0.72X لتلسكوبات CCA-250 (TKA86580L)

The threads matched my CCA-250 perfectly, and the image circle is noticeably brighter in my subs. I was worried about vignetting, but the reduction is clean edge-to-edge.

The 0.72x reduction really speeds up my CCA-250 exposures without sacrificing sharpness across the field. I’ve been able to capture fainter nebulae in less total imaging time, which makes those long winter nights more productive.

Switching from my old reducer was night and day—this one dropped my exposure times noticeably without sacrificing image sharpness across the frame. The threads on the 645-CA mate perfectly with the CCA-250, no adapter wobble at all.