星河科研社Bahtinov调焦板现货供应，为拍摄深空天体精确调焦不可或缺的工具，简单易用。

Galaxy Scientific Group Bahtinov Focusing Mask in stock, a must-have and easy to use tool for deep sky astrophotography.

80mm 调焦板，适合相机镜头至90mm口径、同时镜筒或遮光罩不大于120mm的望远镜或镜头用 

80mm focusing mask, for telescopes or lens aperture up to 90mm, with tube or dewshield OD less then 120mm

150mm 调焦板，适合90mm至170mm口径、同时镜筒或遮光罩不大于185mm的望远镜或镜头用 

150mm focusing mask, for telescopes or lens aperture 90 to 170mm, with tube or dewshield OD less then 185mm

200mm 调焦板，此型号适合Celestron C8 或 EdgeHD8 镜筒，亦适合170mm至210mm口径、同时镜筒或遮光罩不大于235mm的望远镜或镜头用 

200mm focusing mask, for Celestron C8 or EdgeHD8, telescopes or lens aperture 170 to 210mm, with tube or dewshield OD less then 235mm

250mm 调焦板，适合210mm口径以上、同时镜筒或遮光罩不大于280mm的望远镜或镜头用 

250mm focusing mask, for telescopes or lens aperture 210mm or up, with tube or dewshield OD less then 280mm

以十分耐用的PVC物料製作，附送锥型胶塞，方便架在望远镜前使用。

Made from PVC for durability, supplied with silicone plugs for easy fixing on telescopes or lens.

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