Sky-Watcher Skymax-102 (OTA) - 102mm f/12.7 Maksutov-Cassegrain

Sky-Watcher SkyMax-102 (OTA): the versatile planet telescope

The Sky-Watcher SkyMax-102 is a 102 mm aperture, 1300 mm focal length (f/12.7) Maksutov-Cassegrain telescope. This standalone optical tube assembly (OTA) without a mount is a favorite for those who already own a mount or are looking for a powerful travel scope: it can also be mounted on a sturdy tripod via its tripod adapter.

What do you see through the SkyMax-102?

The Moon is a landscape at this focal length: craters, rilles, and mountain ranges along the terminator. Jupiter shows cloud bands, Saturn its rings with the Cassini Division under good seeing, Mars its polar caps. Double stars and bright star clusters complete the program. This type of telescope is not designed for wide nebulae.

Loose tubing: your mounting, your choice

With its short, closed tube, the SkyMax-102 is an ideal second optical instrument alongside a large Dobsonian, or a first tube on an existing mount. The 1.25-inch fitting with a 90-degree star diagonal allows for comfortable viewing, even during the day for long-distance nature observation.

This is how to get the most out of this telescope

• Give the thick correction lens cooling time: 30 to 45 minutes outside before looking at high magnification. A Maksutov rewards patience with a rock-steady image.
• Protect against dew The front-mounted meniscus lens fogs up faster than a mirror. A dew shield is the most useful first upgrade for this type of telescope.
• Virtually maintenance-free The closed tube keeps dust out and collimation is rarely an issue. Set it down and look.
• Magnification: the 10mm eyepiece already gives 130x; exactly what this optics are made for. Adding more magnification rarely makes sense in the Dutch climate.
• Plan with the moon: Around the first quarter you see the most detail along the terminator. Our lunar calendar have the best nights in a row.

For whom yes and for whom no

Hello moon and planet watchers, city and balcony observers (bright targets are less affected by light pollution), and travelers who want a short, maintenance-free tube. Still unsure about the type? Our Telescope Buying Guide for Beginners List the considerations.

Not For wide deep-sky fields, the field of view of this long focal length is too narrow; a short Newton would be more suitable. If you want a complete set, consider the 102 bundles with AZ Pronto, EQ2, AZ-Go2, or AZ-GTi mount. Long exposure astrophotography belongs with the smart telescopes; moon photos with a smartphone adapter are precisely a strong point on a Maksutov.

Featured accessories

These accessories add the most after purchase:

• Moon Filter 25%: at this long focal length, the moon is the main course, and bright. The Omegon Moon Filter 25% (1.25 inches) dims the light and increases the contrast. More explanation in our Moon filter guide.
• Smartphone adapter: Maksutov telescopes, with their long focal length, are particularly good for impressive moon photos taken with a phone. The Sky-Watcher SmartPhoto+ adapter comes with a special 20 mm photo eyepiece.
• Carrier bag The short tube calls for a compact bag. Check out the carrier bags and choose the size that fits.

Technical specifications

Included in the box

• Sky-Watcher SkyMax-102 Optical Tube Assembly (OTA, without mount)
• Eyepieces: 25 mm, 10 mm (1.25″)
• Red Dot Finder

Honest advice from observers

We sell and use the Sky-Watcher line ourselves. In our Sky-Watcher merk Guide We'll explain which series are strong and which you'd rather skip. View the full range on our Sky-Watcher merk Page. Order before 11:59 PM for fast delivery, in the Netherlands and Belgium.