Jacobs Digital

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Birkenhead, Auckland 0626

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Sky-Watcher 102mm Mak Cassegrain OTA (No Accessories)

SKU: Salvage102Mak

Sky-Watcher 102mm Mak Cassegrain OTA (No Accessories)-Jacobs Digital
Sky-Watcher 102mm Mak Cassegrain OTA (No Accessories)-Jacobs Digital
Sky-Watcher 102mm Mak Cassegrain OTA (No Accessories)-Jacobs Digital
Sky-Watcher 102mm Mak Cassegrain OTA (No Accessories)-Jacobs Digital

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About this product

Please note; This is a salvaged tube and does not come with a diagonal or eyepiece .


Maksutov-Cassegrain telescopes are super popular, and for good reason! First of all, they are very portable for the size of their optics. With a short, lightweight optical tube, the 102 mm Maksutov-Cassegrain can easily travel with you, whether you are going by land, sea, or air.

But let’s face it, portability isn’t everything! You still need enough light-gathering to see the objects you wish to look at, whether that object is Saturn, the Orion Nebula, a boat on the horizon at dusk, or a deer resting in the shade of an oak tree. 102 mm of aperture is large enough to enjoy objects in our solar system as well as a wide array of deep-sky objects, and it is more than enough for most terrestrial applications.

Another consideration when choosing a telescope or spotting scope is how sharp the optics are. This is where the Sky-Watcher Maksutov-Cassegrain really shines! A Mak-Cass uses both mirrors and lenses to gather and focus light, and this design is famous for sharp, high-contrast “refractor-like” images. Then why not just buy a refractor and be done with it? Because a 4” f/12.7 refractor would be way longer, much heavier, and therefore would require a bigger, more expensive mount to hold it. There goes your portability! No, if you want a highly portable telescope or spotting scope that has bright, sharp images with a beautiful black background sky (an effect of the long f/12.7 focal length), then you should seriously consider the Sky-Watcher 4” Maksutov-Cassegrain! And since Sky-Watcher makes a full line of Maksutov-Cassegrains, from the ultra-compact 90 mm to the full-sized 180 mm (7”), you can choose the aperture that’s right for you if you feel you need something a tad smaller or a lot bigger. In fact, some people have a large telescope for deep-sky work and a smaller telescope for travel and those times when you want to “grab and go”. However, whether this is your first telescope or your tenth, we know you will enjoy the amazing flexibility of the 102 mm Skywatcher Skymax!

Skywatcher 102 Mak Specs

  • Optical Design: Maksutov-Cassegrain
  • Aperture: 102 mm (4.02in)
  • Focal Length: 1300 mm
  • Focal Ratio: f/12.7
  • Included Eyepieces: 25 mm, 10 mm
  • Finderscope: Red Dot finder
  • Diagonal: 1.25” 90 degree Star diagonal
  • Highest Useful Magnification: 204x
  • Optical Coatings: Fully multi-coated
  • Tube Weight: 4.25 lb.
  • Tube Length: 12.25”
  • Tube Width: 4.625”

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