Vixen Telescope A105MII Optical Tube Assembly

Specifications
A105MII Optical Tube Assembly
	
	
Objective lens, effective aperture
	
81mm achromatic, multicoated
	
	
	
Focal length
	
910mm
	
	
	
Focal ratio
	
F11.2
	
	
	
Resolving power
	
1.43arc seconds
	
	
	
Limiting magnitude
	
11.3
	
	
	
Light gathering power
	
134×unaided eye
	
	
	
Focusing mechanism
	
Rack-and-pinion
	
	
	
Finder scope
	
XY Red dot finder (1×aiming device)
	
	
	
Adapter thread / Visual back
	
60mm and 42mm for T-ring / 50.8mm and 31.7mm push fit with flip mirror diagonal
	
	
	
Accessories
	
Tube rings, Dovetail slide bar
	
	
	
Photography
	
Usable with Prime focus, Eyepiece projection and Afocal imaging
	
	
	
Solar observation
	
Available with Sun projection screen set B
	
	
	
Dimensions / weight
	
90mm dia. and 890mm long / 3.5kg (Net 2.5kg)