Maksutov-Cassegrain Optical Design

Primary and secondary mirrors feature proprietary Radiant™ Aluminum Quartz™ (RAQ™) coating

Features Metallic High-Transmission Coatings™ (MHTC™) that virtually eliminates chromatic aberration

90mm aperture, 1250mm focal length, f/13.8 focal ratio

Aluminum tubes are painted in a glossy black diamond metallic finish



High-level clear imaging

If you're looking for a clear, contrasting view with a high level of detail, look no further than the Skymax range, Sky-Watcher's premier Maksutov-Cassegrains range.



high magnification

Generally considered to produce sharper images than Schmidt-Cassegrains, Maksutovs offer astronomers a large aperture, high contrast and long focal length in a compact package. With focal lengths 5-7 times longer than regular Newtonian or refracting telescopes, these telescopes provide a higher level of planetary detail.



low chromatic aberration

Skymax Maksutovs mirrors are made from borosilicate, polished and coated with our proprietary Radiant™ Aluminum Quartz™ (RAQ™) coating, which produces up to 94% reflectivity. All Maksutovs use correction plates to help reduce chromatic aberration, and are then coated with our signature Metallic High-Transmission Coatings™ (MHTC™) to produce professional grade optics at an affordable price.


Lightweight Aluminum Equatorial Mount Tripod

EQ2 manual equatorial mount tripod, with the polar axis as the center of the circle, so that your star target will no longer leave the field of vision easily, and the double fine-tuning lever is easy to operate and easy to use



The Skymax 90 EQ2 includes two 1.25" eyepieces, red dot finder, 1.25" dovetail, ¼-20 dovetail, and a soft carrying case.

Optical Info
Optical Structure Mak-Cass
Mirror coating Radiant Aluminum Quartz (RAQ)™ coatings with 94% reflectivity
Lenses fully multilayered
Glass type BK7/Borosilicate
Caliber 90
F/Ratio 13.9
Focal length (mm) 1250
Secondary mirror size 29mm
Observational Info
Dawes Limit 1.29
Rayleigh limit 1.55
Limiting magnitude 12.3
Minimum magnification 13
Maximum magnification 177
Light gathering power (compared to 102 caliber) 27%
General Info
Focuser Primary Mirror
Lens barrel length 11"
Lens Barrel OD 4.125"
Lens barrel weight (including accessories) 3.6 kg
Accessories
Finderscope Red Dot
prism 1.25" Star Diagonal
Dovetail 1/4-20" Foot
Eyepiece 25/10 Wide Angle
Included eyepiece magnification 50x/125x
box Yes
Correction lens No