To clean the telescope’s lens or mirror, disassemble the lens or the mirror from the cell, making sure to mark the sides of the glass elements as it is necessary to reassemble them following the correct orientation as determined by the factory. In this video, I used my Sky-Watcher 100ED as an example. Follow these instructions at your own risk and exercise outmost care when cleaning telescope lenses.
Related link: View all home-brewed DIY astronomy equipment
Night Sky in Focus | Astronomy and Amateur Radio © Anthony Urbano | Manila, Philippines