Tag: repairs

Rack Repair on a 1780 Ramsden

Having the telescope focus is rather a critical part of being able to use it. Depending on the scope, they have many different ways of moving the focus tube back and forth. They tend to break fairly easily,  as the inexperienced operator tends to yank the eye-tube out of the barrel , often damaging the spur gear, rack or both. These 18th century rack … Read More Rack Repair on a 1780 Ramsden