Sky-Watcher EvoStar-150 (OTA) - 6" Achromatic Refractor

Sky-Watcher Evostar-150 (OTA): The Great Classic as a Separate Tube

The Sky-Watcher Evostar-150 OTA is a 150/1200 mm (f/8) achromatic refractor: the largest lens in the Evostar line, with 56% more light-gathering power than the 120 mm model. The 2-inch rack-and-pinion focuser with T2 thread and adapter rounds out the package. When choosing a mount, take into account the 8.5 kg tube and the significant leverage: EQ5 class or heavier.

What do you see through the Evostar-150?

A 150 mm refractor makes a statement: 56% more light than the 120 mm model and the kind of planetary views that refractor enthusiasts rave about. Fine details in Jupiter’s bands, the Cassini Division, bright globular clusters, and a moon that remains crystal clear even at 200x magnification. This is the largest achromatic telescope in the lineup.

Loose tube for the enthusiast

A 6-inch refractor is a dream instrument for many observers, and as an OTA, it's surprisingly accessible. The long tube demands a serious mount and a thoughtful setup location but rewards with a planetary view that is unmatched in this price range.

This is how to get the most out of this telescope

• Almost no cool-down time A refractor lens reaches operating temperature within 10 to 15 minutes, much faster than a mirror telescope. Ideal for short sessions.
• Know what an achromat is: around very bright objects like Venus or the moon's edge, you'll see a thin purplish-blue fringe. That's characteristic of this lens design, it's visually quickly noticeable, and it's the reason why these types of apertures are affordable. For photography, it's the reason to consider an ED refractor.
• Note the tube length: A good meter refractor plus tripod requires a permanent spot or a spacious trunk. The dew shield on the front makes it even longer.
• Magnification: the 10mm eyepiece gives 120x; a 6 mm planetary eyepiece (200x) brings out the maximum planetary detail.
• Never look directly at the sun without protection., not even: this is doubly true for a refractor. Only with a certified solar filter on the front.

For whom yes and for whom no

Hello If you want the classic, calm refractor image: sharp stars, high contrast on the moon and planets and zero maintenance (no collimation, closed tube). Our Telescope Buying Guide for Beginners Place the types side by side.

Not For faint deep-sky objects, a a reflector telescope offers more aperture per euro. If you're looking for a complete set, consider the Evostar-150 EQ5. Deep-sky photography is suited to smart telescopes or an ED refractor; moon photos with a smartphone adapter are actually rewarding work at these long focal lengths.

Featured accessories

These accessories add the most after purchase:

• Moon Filter 25%: The moon is bright in a refractor of this caliber. The Omegon Moon Filter 25% (1.25 inches) dims the light and increases the contrast. More explanation in our Moon filter guide.
• A 6mm planetary eyepiece: the Sky-Watcher 6mm Planetary UWA Eyepiece provides 200x magnification on this telescope for maximum planetary detail.
• Smartphone adapter: Hold your phone up to the eyepiece for surprisingly good moon photos. The Sky-Watcher SmartPhoto+ adapter comes with a special 20 mm photo eyepiece.
• Carrier bag The 150/1200 refractor tube fits this exactly. Look at the carrier bags.

Technical specifications

Included in the box

• Sky-Watcher Evostar-150 Optical Tube Assembly (OTA, without mount)
• 2-inch rack-and-pinion focuser with T2 thread and 2-to-1.25 inch adapter

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.