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- 305 mm Newtonian reflector
- 1200 mm (f/4)
- Fully multi-coated borosilicate mirrors
- 2” dual-speed 10:1 linear power focuser
- 8×50 finderscope
- Tube rings with D-style dovetail bar
The new Sky-Watcher Quattro Imaging Newtonian with dual-speed focuser incorporates a superb mirror-set with two significant advantages over competing products. A 2" dual-speed 10:1 ratio focuser is included for excellent focusing precision. Additionally, the tube length has been slightly shortened to optimize performance for prime-focus photography.
Even better performance for astro-photography, and visual use, can be achieved when used in combination with the Sky-Watcher Quattro coma corrector.
|Mirror Coatings||94% Aluminum|
|Primary Aperture (mm)||305|
|Primary Edge Thickness||38mm|
|Focal Length (mm)||1200|
|Secondary Obstruction (by diameter)||33%|
|Secondary Obstruction by Area||11%|
|Light Gathering (compared to next size down)||44%|
|Focuser||2" Dual Speed Crayford|
|OTA Length (Retract/Ext.)||42.5"|
|OTA Outer Diameter||14.25"|
|OTA Weight (with accessories)||57|
|Included Finder||9x50 Finder|