Construction of a"tall" telescope Dobson "Light" 300F6 ...with disc brake – PHASE 1: realization

300F6 “LIGHT”: Mission (equilibration) impossible?….A solution is to equip it with a disc brake! From years, in his beautiful box taped ZAOT (the brand of my favorite aluminizer) I had that mirror Ø305 F 1830 unused. I had bought it for a short time before because it was "gray", i.e. with a good parabolic surface, but happened “among head and neck" (like we say in Italy meaning "by surpise")”, to a “mirror

Dynamic Re-balancing with bungee cord, Of Dobson “light weight” telescope

In support of the fact that the balance of light Dobsonian (and not), It can be done dynamically as an alternative to the use of counterweights, I do narrate here my recent experience to rebalance with elastic rubber my Dob250F5, After adding optical finder 6×30 weight of 265g. In order to fully understand what the physical principles and