Sky-Watcher Quattro-250P: ten inch signal machine
The Sky-Watcher Quattro-250P is a 254/1000mm f/4 astrograph: ten inches of resolution at full speed. For astrophotography at the highest level, with a 15kg tube that calls for a serious mount: EQ6-R Pro, AZ-EQ6 or heavier.
What can you photograph with it?
Everything where signal counts: faint nebulae, vast H-alpha regions, galaxies, and dust lanes. Where a slower system integrates for hours, an f/4 system captures the same on the sensor in half the time. Visually (with its own eyepieces), it is also a bright deep-sky telescope with a surprisingly sharp image in the center.
Why a Quattro?
The Quattro line is Sky-Watcher's fastest Newtonian series: f/4 means four times as much signal per minute as an f/8 system. The dual-speed Linear Power focuser (10:1) carries cameras without sagging and focuses at the pixel level. Note the fair caveat: no eyepiece is included. This is an astrograph; visual use is entirely possible, but with your own eyepieces.
This is how to get the most out of this telescope
- Collimation at f/4 is surgical work: check for every session with a good collimator. Our guide to collimation describes the routine.
- The aplanatic corrector belongs with it: Without a corrector, f/4 stars are comet-shaped at the edge. Factor this into the purchase, not afterwards.
- Mounting choice: EQ6-R Pro or heavier; with camera and corrector, you're around 18 kg load.
- Guiding the moon At this brightness, every arcsecond of pointing accuracy counts in the star points.
- Format: 15 kg tube: building up in stages and establishing a regular routine make all the difference.
- Give the mirror some cooling time and consider a light shroud against stray light and dew.
- Visual assistance a 6 mm eyepiece Magnifies 167x; but bring your own eyepieces, there are none in the box.
For whom yes and for whom no
Hello the demanding photographer with a heavy mount who wants to capture finer targets quickly and deeply.
Not As a first-time astrographer, this format is a steep learning curve; If you want photo results without mounting, guiding, and post-processing, then the smart telescopes the shorter route; ours Telescope Buying Guide for Beginners explain the trade-off.
Featured accessories
These accessories add the most after purchase:
- Aplanatic coma corrector f/4 at f/4, a corrector is not an option but a part of the optical system. The Sky-Watcher 2 inch Aplanatic Coma Corrector is specifically designed for the Quattro line and is a standard component.
- Cheshire eyepiece the Sky-Watcher Cheshire Eyepiece makes the critical f/4 collimation accurate and repeatable.
- Light Pollution Filter (2 inch) gets noticeably more contrast out of your shots under Dutch or Belgian skies.
- Moon Filter 13%: with this opening, the moon is blindingly bright; the Omegon Moon Filter 13% (1.25 inches) The light fades. More explanation in our Moon filter guide.
Technical specifications
| Specification | Details |
|---|---|
| Optical design | Newtonian astrograph (parabolic) |
| Opening | 254 mm |
| Focal length | 1000 mm (f/4) |
| Focuser | 2 inch dual-speed Linear Power (10:1) |
| Seeker | 9x50 optical with crosshair |
| Ocular Adapters | 1.25 and 2 inch (eyepiece not included) |
| Tube weight | 15 kg |
| Mount | No (OTA) |
Included in the box
- Sky-Watcher Quattro-250P Optical Tube
- 2 inch dual-speed linear power focuser with adapters
- 9×50 optical viewfinder
- Note: no eyepiece included (astrograph)
- Free: Stargazer's Handbook by Telescoop.nl (16 pages, Dutch language)
Free Stargazers' Handbook
Every Sky-Watcher telescope from Telescoop.nl comes with our own Stargazer’s Handbook in the box. It’s a 16-page booklet that helps you get started on your first few nights: how to align the finder scope, what magnification to start with, why the image sometimes wobbles, and when a telescope does or doesn’t need to be collimated. It’s not a thick book—just the essentials you really need when you’re starting out.
Honest advice from observers
We sell and use the Sky-Watcher line ourselves. In our Sky-Watcher brand guide We'll explain which series are strong and which you'd rather skip. View the full range on our Sky-Watcher brand page. Unsure about mounting or a corrector? Call or email us: we're happy to help with photo setups. Ordered before 11:59 PM is delivered quickly, in the Netherlands and Belgium.
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