星河科研社作为Celestron香港总代理，不时要为客户维修望远镜，工作室亦有专业检测工具胜任这工作。这是一位老客户的EdgeHD 8"镜，因为存放不当让镜发了霉，亦在没足够准备下动了光轴导致成像恶劣。这次花了大半小时清洁几组镜片，幸好全部都能清理掉，没有永久性痕迹留下，最后再用500x及检测器材重调光轴，把望远镜回復至全新状态。

As the sole dealer of Celestron in Hong Kong, Galaxy Scientific Group has to repair telescopes for customers from time to time, and the workshop has professional testing tools to do the work. This is an EdgeHD 8" mirror from an good old customer. The mirror got moldy due to improper storage, and the optical axis was off without sufficient preparation, resulting in very poor image. This took more than half an hour to clean the optics sets, but fortunately all can be cleaned and no permanent traces are left. Finally, the telescope is tested at 500x and with equipment to readjust the optical alignment and restore the telescope to a new state.