Sky-Watcher · Schmidt-Cassegrain
Sky-Watcher Quattro 150P Imaging Newtonian
Fast, wide-field imaging on a budget: the Quattro 150P delivers serious astrograph performance at an accessible price point.
Price updated Mar 22, 2026
Performance Scores
Overview
The Sky-Watcher Quattro 150P is a 150mm f/4 Newtonian designed primarily for astrophotography, though it handles visual work reasonably well too. At 600mm focal length, it sits in a useful sweet spot for wide-field deep-sky imaging, covering large nebulae and galaxy clusters in a single frame. The fast f/4 ratio means shorter exposures compared to slower scopes, which is a genuine practical advantage for anyone shooting from light-polluted skies or working with a tracker rather than a full equatorial mount.
The parabolic mirrors use Sky-Watcher's RAQ coatings, rated at 94% reflectivity, which helps maximize the light reaching your sensor. The oversized secondary mirror is intentionally sized to fully illuminate larger sensors, including full-frame DSLRs, without corner vignetting becoming a serious problem. One honest caveat: f/4 Newtonians introduce coma near the edges of the field, so a coma corrector is essentially mandatory for serious imaging.
Sky-Watcher includes one in the package, which is worth factoring into the value assessment. The 11:1 dual-speed Crayford focuser gives you the fine control needed to nail focus with a camera attached. At 7.67kg, it needs a sturdy mount, and its low Amazon rating of 3.6 from 17 reviews suggests some buyers have encountered quality control variability.
At a Glance
150mm
Aperture
f/4
Focal Ratio
7.67kg
Weight
600mm
Focal Length
Specifications
Key Features
- 150mm aperture and f/4 focal ratio allow noticeably shorter exposure times compared to slower, longer telescopes
- Parabolic primary mirror with 94% reflectivity coatings reduces light loss and improves image contrast
- Oversized secondary mirror provides even illumination across full-frame camera sensors, reducing corner vignetting
- 11:1 dual-speed Crayford focuser gives precise, repeatable focus control essential for astrophotography
- Wide 600mm focal length suits large deep-sky targets like nebulae and open clusters
- Coma corrector included in the package, addressing a known optical limitation of fast Newtonians
- At 7.67kg, requires a capable equatorial mount to perform well, which adds to the total system cost
Customer Reviews
17 reviews
This is a really great scope, especially for the price. My first newtonian which is probably why i had a bit of trouble getting it set up from the start. After watching many videos about collimation, i found that my secondary mirror was a bit out rotated and needed some correcting. After figuring th...
Lots of improvements can be done with this scope, but super for the price. Great first AP scope. Mirror is great for the price. Better scopes don't come with the corrector, and a corrector can cost as much or more than this scope. Get a good GEM. Better to put your money into your mount. Can do good...
Be prepared to work on it a lot. First right out of the box I'd say certain things on this scope are garbage. The focuser being the main problem. Initially I thought I could get it to work. After adjustment on the tensioner screws it did hold all my camera gear and the coma corrector in place withou...