The Optical Tube Performance of AstroView 6
The AstroView 6 is a 6” f/5 Newtonian. Compared to a longer scope like the regularly-offered 6” f/8 Dobsonians, the AstroView will be more difficult to collimate and it may show slight amounts of coma at the edge of the field at low power, but it’s still pretty easy to collimate and you’d be hard-pressed to find the coma in the first place let alone actually care about it.
The AstroView 6 comes with a 1.25” focuser. It is probably one of the last reflectors to have an all-metal 1.25” rack-and-pinion focuser; most scopes nowadays use plastic ones. The focuser is of decent quality and works quite well. Obviously, you can’t use 2” eyepieces here and the focuser isn’t as good at holding a heavy camera for astrophotography, so if you want to use 2” eyepieces or put the scope on a different mount for astrophotography later on the AstroView 6 is probably not for you, unless you’re willing to purchase an aftermarket focuser and enlarge the hole in the tube to install it.
The scope’s tube rings have a Vixen-style dovetail attached to the bottom which allows for easy attachment and removal ...