Highlights

190mm working aperture, 1000mm focal length, f/5.3 focal ratio
Virtually perfect Maksutov-Newtonian optical design: no coma corrector or field flattener needed
Primary and secondary mirrors feature proprietary Radiant™ Aluminum Quartz™ (RAQ™) coatings delivering 94% reflectivity
Corrector plate treated with proprietary Metallic High-Transmission Coatings™ (MHTC™) virtually eliminating chromatic aberrations
Corrected for APS-C imaging sensors
Aluminum tube coated with glossy, black diamond metal-flake finish
2-inch dual-speed Crayford-style focuser with 1.25-inch adapter
V-style dovetail with mounting rings
Knife-edge baffles help reduce glare with matched optics for the best image possible
Cooling vents on the front and rear of the tube for faster setup time than closed optical designs
Included accessories: 8x50 right-angle finderscope and a 2-inch T-ring adapter

The exciting Starlux Maksutov-Newtonian from Sky-Watcher is just what astrophotographers and serious visual observers have been looking for.

The Mak-Newtonian design provides large aperture apochromatic performance with exceptional field correction. Compared to a similarly sized Schmidt-Newtonian, the Mak-Newtonian yields a sharper image with more contrast. Naturally, the Mak-Newtonian is an excellent visual performer, too.

The Maksutov- Newtonian design is a virtually perfect optical design. This design addresses all major optical issues that astronomers and astrophotographers face without the need of corrective optics. The Mak corrector gives you a perfectly flat field without using field flatteners. The spherical primary mirror is corrected on the meniscus which eliminates coma, delivering pinpoint stars across the entire field of view. No color distortion means you don't have to spend extra money on exotic glass like you would for a similar sized APO refractor.

With the Starlux 190 Mak-Newt you get a fast, APO refractor performance with less weight and significantly less cost.

Specifications

Optical Info
SKU	S11550
UPC	050234115506
Optical Design	Mak-Newtonian
Mirror Coatings	94% Aluminum
Lens Coatings	Fully Multi-Coated
Glass Type	BK7/Borosilicate
Primary Aperture (mm)	203
F/Ratio	5.3
Focal Length (mm)	1000
Secondary Diameter	64mm
Secondary Obstruction (by diameter)	34%
Secondary Obstruction by Area	11%
Observational Info
Dawes Limit	0.61
Rayleigh Limit	0.74
Limiting Mag.	13.9
Minimum Magnification	27
Maximum Magnification	374
Light Gathering (compared to next size down)	11%
General Info
Focuser	2" Dual Speed Crayford
OTA Length (Retract/Ext.)	37.5"
OTA Outer Diameter	9.5"
OTA Weight (with accessories)	29
Accessories
Included Finder	8x50 RACI
Included Diagonal	No
Mounting Accessories	Rings/V-Rail
Included Eyepieces	None
Included Case	No
Corrector	No
Shipping Weights & Dimensions