Is a 3x Barlow lens and tabletop Dobsonian telescope not providing sufficient inward focus?
When using a 3x Barlow lens with a tabletop Dobsonian telescope, you might encounter issues where you cannot achieve enough inward focus, meaning the focus plane of the telescope does not reach far enough into the housing to create a sharp image. This issue often arises in small tabletop Dobsonians because of their compact design, […]