Sky-Watcher Quattro-250P: tien inch signaalmachine
De Sky-Watcher Quattro-250P is een 254/1000 mm astrograaf op f/4: tien inch resolutie op volle snelheid. Voor astrofotografie van het hoogste niveau, met een buis van 15 kg die om een serieuze montering vraagt: EQ6-R Pro, AZ-EQ6 of zwaarder.
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 Newton series: f/4 means four times as much signal per minute as an f/8 system. The dual-speed Linear Power focuser (10:1) holds cameras without sagging and focuses at the pixel level. Note the honest disclaimer: no eyepiece is included. This is an astrograph; visual use is excellent, 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 of zwaarder; met camera en corrector zit je rond de 18 kg last.
- Guiding the moon At this brightness, every arcsecond of pointing accuracy counts in the star points.
- Format: 15 kg buis: opbouwen in delen en een vaste routine maken het verschil.
- Give the mirror some cooling time and consider a light shroud against stray light and dew.
- Visual assistance a 6 mm eyepiece geeft 167x; breng dan wel je eigen oculairs mee, er zit er geen in de doos.
For whom yes and for whom no
Hello de veeleisende fotograaf met zware montering die de fijnere doelen snel en diep wil vastleggen.
Not Als eerste astrograaf is dit formaat een steile leerschool; Wil je fotoresultaat zonder montering, guiding en nabewerking, dan zijn de 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 merk 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 sight with reticle |
| 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 optische buis
- 2 inch dual-speed linear power focuser with adapters
- 9x50 optical finder
- Note: no eyepiece included (astrograph)
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. 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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