中古 - シリウスオプティクス NPC1 フィルター 1.25インチ

The threads are clean and the glass has no scratches—hard to believe this is used gear. Screwed right into my eyepiece and held snug with zero wobble.

Threaded onto my focuser perfectly and the glass is spotless, no scratches or dust at all. For a used filter, it performs just as well as a new one—crisp views of Jupiter through my scope tonight.

I was a bit skeptical buying used gear, but this 1.25" filter's threads are perfectly smooth and the glass looks pristine. Slid right into my eyepiece without any wobble, and it cuts light pollution noticeably better than my old budget filter. Really happy with the condition for the price.