Sky-Watcher Explorer-250PDS – 254/1200 Imaging Newtonian Reflector

Sky-Watcher Explorer-250PDS (OTA): tien inch voor foto en oog

De Sky-Watcher Explorer-250PDS is een 254/1200 mm imaging-Newton (f/4,7) met een grote spiegel van laag-uitzettend glas. Serieuze resolutie en lichtopbrengst voor astrofotografie, en visueel meteen een deep-sky-machine. De buis weegt 14,4 kg: plan de montering (EQ6-klasse) daarop.

What can you do with it?

Photographically, this is the class where smaller galaxies, planetary nebulae, and fine structures become accessible: lots of aperture, lots of resolution, lots of signal. Visually, you get a fully fledged deep-sky telescope with it: globular clusters resolve, nebulae show structure, and planets are tack sharp. These are tubes that serve two hobbies at once.

Why a PDS?

The PDS versions are the photo versions of the Explorer line: the focal point is further out so that a camera comes into focus in prime focus, the tube is internally blackened to prevent stray light, and the focuser is built for the weight of a camera. Visually, you don't lose anything: with the included.

This is how to get the most out of this telescope

• Collimatie is bij f/4,7 een vast ritueel: check for each photoshoot. Our guide to collimation It takes two minutes.
• Include the comma corrector: For sharp stars all the way to the corners of the sensor, this fast optic requires a corrector. Ordering it at the same time saves you a second waiting period.
• Mounting choice: EQ6-R-klasse of zwaarder is het advies; deze buis met camera vraagt om massa.
• Guiding Loon With this focal length, a small guide scope makes the difference between 60 and 300 second exposures.
• Formaat en gewicht: 14,4 kg buis; til hem los van de montering en bewaar de collimatie-check voor ná het opbouwen.
• Give the mirror some cooling time (30 to 60 minutes depending on the size) for the sharpest image, visually and in photos.
• Visual planetary work: a 6 mm eyepiece geeft 200x.

For whom yes and for whom no

Hello de gevorderde fotograaf met een zware montering die resolutie zoekt, en de visuele waarnemer die één buis voor alles wil.

Not Als eerste fotobuis is dit formaat een steile leerschool; Wil je deep-sky-foto's 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:

• Coma corrector At f/5, stars at the edge of the frame appear comet-shaped on the sensor. The Sky-Watcher 2 inch Coma Corrector 1.0x solves this and is the most important first purchase for serious photography with this tube.
• Cheshire eyepiece An imaging Newton only performs with tight collimation; a Cheshire makes the adjustment accurate and fast.
• Light Pollution Filter (2 inch) Under Dutch or Belgian skies, it brings out significantly more contrast in your images and your eyepiece view.
• 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.
• Carrier bag de 250/1200-tas past deze buis exact. Bekijk de carrier bags.

Technical specifications

Included in the box

• Sky-Watcher Explorer-250PDS optische buis
• 28mm LET-ocular (2-inch)
• 9x50 optical finder with crosshairs
• 1.25 and 2 inch eyepiece adapters

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. Uncertain about mounting, guiding, or coma corrector? Call or email us: we're happy to help with photo setups.