• Product Image of Sky-watcher 17mm Super Plossl Telescope Eyepiece 20370
  • Telescope eyepiece with 'SP17mm' marking on a white background

Sky-Watcher 17mm Super Plössl Eyepiece

SKY20370

SkyWatcher

4 in stock
£29.99
£29.99
Tax included. Shipping calculated at checkout.

Order before 3pm for next day delivery

Sky-Watcher 17mm Super Plössl Eyepiece — Sharp, High-Contrast 1.25" Viewing (Model 20370)

The Sky-Watcher 17mm Super Plössl Eyepiece delivers crisp, high-contrast views with a comfortable 52° apparent field — making it an excellent all-round eyepiece for lunar, planetary and deep-sky observing.

Built around the proven 4-element Plössl optical design, this eyepiece offers edge-to-edge clarity with minimal distortion, working beautifully on a wide range of telescopes including Newtonian reflectors, refractors and Schmidt-Cassegrain (SCT) systems.

Whether you’re upgrading from basic kit eyepieces or expanding your observing toolkit, the 17mm Super Plössl provides a noticeable step up in brightness, sharpness and detail.

Bright, sharp views with classic Plössl performance

The Super Plössl design is renowned for delivering excellent optical quality at an affordable price.

  • 4-element Plössl optics for balanced sharpness across the field

  • Reduced spherical aberration and distortion

  • Clean, high-contrast images — ideal for fine detail

From lunar craters and planetary belts to open clusters and brighter nebulae, this eyepiece helps reveal subtle details that cheaper eyepieces can miss.

High-quality coatings for enhanced contrast

To maximise image brightness and clarity, the Sky-Watcher 17mm features:

  • Multi-coated optics for improved light transmission

  • Edge-blackened elements to suppress stray light and reflections

The result is darker backgrounds, brighter targets and more contrast — especially useful under light-polluted skies.

Comfortable viewing for longer observing sessions

Designed with usability in mind:

  • Generous eye relief for relaxed viewing

  • Fold-back rubber eyecup to block stray light

  • Rubber grip for secure handling in cold conditions

Comfort matters — especially when tracking faint deep-sky objects — and this eyepiece makes extended observing easier.

Ideal focal length for versatile observing

At 17mm, this eyepiece hits a useful mid-power sweet spot:

  • Medium-power planetary views

  • Detailed lunar observing

  • Framing star clusters and brighter nebulae

  • Comfortable navigation between objects

It makes an excellent upgrade over stock eyepieces commonly supplied with beginner telescopes.

Specifications

  • Focal length: 17mm

  • Barrel size: 1.25" (31.7mm)

  • Apparent field of view: 52°

  • Optical design: 4-element Plössl

  • Comfort features: Fold-back rubber eyecup + rubber grip

Who is this eyepiece for?

✔ Beginner to intermediate astronomers
✔ Anyone upgrading from basic kit eyepieces
✔ Observers wanting clearer, sharper views
✔ Users of 1.25" telescopes looking for quality optics at great value

A smart upgrade for sharper, more immersive views

The Sky-Watcher 17mm Super Plössl Eyepiece (20370) offers premium optical performance at a sensible price, making it one of the best-value upgrades for improving clarity, contrast and overall observing enjoyment.

Add it to your eyepiece collection and experience the difference a quality Plössl can make at the eyepiece.

Shipping Options

Fast & Reliable UK Delivery

We offer flexible delivery options across the UK, with free shipping available on qualifying orders.

  • FREE Next Working Day Delivery (Mon–Fri)
    On all orders £300 and over
  • FREE Express Delivery (1–3 Working Days)
    On orders £49.99 – £299.99
  • Express Delivery – £3.99
    On orders under £49.99
  • Standard Delivery (2–4 Working Days) – £2.99
    A great value option for smaller orders
  • Priority Shipping – £8.99
    A fully tracked, guaranteed delivery service, including Saturday delivery options

Order Fulfilment

Some items, as clearly stated on the product page, may be fulfilled directly by our partners or manufacturers. In these cases, your order will be shipped to you straight from the brand’s warehouse. This helps us provide a wider range of specialist equipment and may result in slightly different delivery times.

Returns Policy

If something isn’t right, we’ll always try to help.

  • Unused items in “as new” condition can usually be returned within the statutory cooling-off period
  • Please contact us before sending anything back so we can advise on the safest way
  • For unwanted items, return shipping is your responsibility, and original shipping may be deducted where applicable
  • If a product is faulty or damaged, we’ll arrange repair, replacement or refund in line with your consumer rights — and we’ll cover reasonable return costs

Telescope shipping is expensive, and specialist — avoidable returns really do impact our business, so we always encourage customers to ask questions before buying. We’re here to help you get it right first time.

Your statutory rights are not affected.
Sky-Watcher 17mm Super Plössl Eyepiece

£29.99

Does it come with a warranty?

All our products are UK stock so come with manufacturers warranty

What happens if I don't like it?

We always want you to be happy with your purchase — so if you’re unsure, please ask us first. We’re always happy to give honest advice before you buy.

If the product arrives and you simply decide it isn’t for you, you can usually return it within the cooling-off period — as long as it’s unused, in perfect condition, and returned with all original packaging and accessories.

Because telescopes and optical equipment are large, delicate and expensive to ship, you’ll need to cover the cost of sending it back, and if we originally subsidised delivery, we may deduct our outbound shipping costs from your refund.

We’re a small specialist business, and unnecessary returns genuinely hurt us — so if you’re unsure at all, please talk to us first. We’d rather help you choose the right item than process a return.

How fast is shipping?

We aim to ship in-stock items as quickly as possible.

  • Most in-stock orders dispatch within 1–2 working days
  • Delivery usually takes 1–3 working days after dispatch (UK mainland)
  • Heavier / oversized items and special orders may take a little longer

You’ll receive tracking details as soon as your order is on its way.

Astronomy equipment often requires specialist packing and trusted couriers — we do this to keep your gear safe, not to slow things down. If you need something urgently, just ask and we’ll do our best.

What's the returns policy?

If something isn’t right, we’ll always try to help.

  • Unused items in “as new” condition can usually be returned within the statutory cooling-off period
  • Please contact us before sending anything back so we can advise on the safest way
  • For unwanted items, return shipping is your responsibility, and original shipping may be deducted where applicable
  • If a product is faulty or damaged, we’ll arrange repair, replacement or refund in line with your consumer rights — and we’ll cover reasonable return costs

Telescope shipping is expensive, and specialist — avoidable returns really do impact our business, so we always encourage customers to ask questions before buying. We’re here to help you get it right first time.

Your statutory rights are not affected.

What are your opening hours?

Monday: 9.00am - 5.00pm
Tuesday: 9.00am - 5.00pm
Wednesday: 9.00am - 5.00pm
Thursday: 9.00am - 5.00pm
Friday: 9.00am - 5.00pm
Saturday: 9.00am - 5.00pm
Sunday: Closed