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All-Star Telescope is your source for all things astro from telescopes to astrophotography cameras. Have a question? We'd love to help. Email: Call Us: (587) 336-6621 Toll Free: 1 (866) 310-8844
Have a question? We'd love to help. Email: Call Us: (587) 336-6621 Toll Free: 1 (866) 310-8844

Sky-Watcher Skymax 150 Maksutov-Cassegrain Telescope OTA (S11530)

SKU 050234115308
Original price $1,100.00 - Original price $1,100.00
Original price
$1,100.00 - $1,100.00
Current price $1,100.00

Product is not in stock at the moment but we expect it to arrive soon.

New stock is arriving all the time. We will let you know an estimated timeline for when your reserved item will arrive.

The Sky-Watcher Skymax Maksutov-Cassegrains are the ultimate take-anywhere telescopes. Despite their small dimensions they pack a powerful punch. Their high-resolution, diffraction-limited optical systems are multi-coated to maximize contrast and image sharpness.


If you're seeking crisp, contrasty views with high levels of detail, look no further than the Skymax series, Sky-Watcher's premiere line of Maksutov-Cassegrains. Generally regarded as producing a sharper image than Schmidt-Cassegrains, Maksutovs offer astronomers a large visual aperture, high contrast and long focal length in a compact package. These telescopes deliver higher levels of planetary detail due to a focal length that is 5-7 times longer than your average Newtonian or refractor telescope.

Skymax Maksutovs feature mirrors constructed of borosilicate, polished and coated with our proprietary Radiant Aluminum Quartz (RAQ) coatings, which produce a remarkable 94% reflectivity. All Maksutovs use a corrector plate to help reduce chromatic aberration, which is then coated using our signature Metallic High-Transmission Coatings (MHTC), producing professional grade optics at an affordable price.

The Skymax 150 includes a 2-inch 28mm eyepiece, a 98x50 finderscope, V-style dovetail, and a 2-inch diagonal.

Quick overview

  • Maksutov-Cassegrain optical design
  • Primary and secondary mirrors feature proprietary Radiant Aluminum Quartz (RAQ) coatings
  • Corrector plate featuring Metallic High-Transmission Coatings (MHTC) virtually eliminates chromatic aberrations
  • 150mm aperture, 1800mm focal length, f/12 focal ratio

What's in the box

  • Aluminum tube coated with glossy, black diamond metal-flake finish
  • 2-inch 28mm eyepiece
  • 9x50 finderscope
  • V-style dovetail
  • 2-inch diagonal


Optical Info
Optical Design Mak-Cass
Mirror Coatings Radiant Aluminum Quartz (RAQ) coatings with 94% reflectivity
Lens Coatings Fully Multi-Coated
Glass Type BK7/Borosilicate
True Aperture (mm) 151
Primary Aperture (mm) 166
Primary Edge Thickness 12.5mm
F/Ratio 12
Focal Length (mm) 180000%
Secondary Diameter 47mm
Secondary Obstruction (by diameter) 31%
Secondary Obstruction by Area 10%
Observational Info
Dawes Limit 0.77
Rayleigh Limit 0.93
Limiting Mag. 13.4
Minimum Magnification 2100%
Maximum Magnification 295
Light Gathering (compared to next size down) 40%
General Info
Focuser Primary Mirror
OTA Length (Retract/Ext.) 17.5"
OTA Outer Diameter 7.5"
OTA Weight (with accessories) 14
Included Finder 9x50 Finder
Included Diagonal 2" Star Diagonal
Mounting Accessories V-Rail
Included Eyepieces 28 LET