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Celestron Omni 1.25" 12mm Eyepiece

050234933193

Celestron

2 in stock


Regular price £49.99
Sale price £49.99 Regular price
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Celestron Omni 12mm Eyepiece – 1.25" Barrel

High-Contrast 4-Element Plössl Eyepiece for Lunar, Planetary & Deep-Sky Observing

Get closer to the action with the Celestron Omni 12mm Eyepiece, designed to deliver sharp, detailed views of the Moon, planets, and brighter deep-sky objects. With a precision 4-element Plössl optical design, multi-coated lenses, and a 50° apparent field of view, this mid-to-high power eyepiece strikes a perfect balance between magnification and clarity—without breaking the bank.


🔍 Key Features:

  • 12mm Focal Length – A versatile mid-to-high power option, ideal for detailed views of lunar features and planetary surfaces

  • 50° Apparent Field of View – Wide enough for comfortable tracking of the Moon, planets, star clusters, and more

  • 8mm Eye Relief – Compact and immersive for deep-space observing; rubber eyecup helps reduce stray light

  • 4-Element Plössl Design – Delivers bright, sharp images across the field with minimal distortion

  • Fully Multi-Coated Optics – Enhances light transmission and image contrast

  • Blackened Lens Edges – Suppress internal reflections to maximise contrast

  • Matte-Finish Aluminium Body – Durable, glare-resistant, and beautifully machined

  • Standard 1.25” Barrel – Threaded to accept a wide range of 1.25” filters for enhanced viewing


🌌 Ideal for Viewing:

  • Lunar Surface – Craters, ridges, and maria in crisp detail

  • Planets – Catch the rings of Saturn, the moons of Jupiter, and Mars’ polar caps

  • Deep-Sky Objects – Globular clusters, planetary nebulae, and other compact targets


⚙️ Specifications:

Specification Value
Focal Length 12mm (0.49")
Apparent Field of View 50°
Eye Relief 8mm (0.31")
Optical Design 4-element Plössl
Barrel Size 1.25" (32mm)
Coatings Fully multi-coated
Filter Threading Yes – accepts 1.25” filters

💡 Omni Quality You Can Count On

Celestron’s Omni Series eyepieces are built to outperform typical budget optics, featuring precision-ground lenses, multiple layers of anti-reflective coatings, and sleek anodised aluminium housings. Every detail is designed to enhance contrast, reduce glare, and provide a premium experience—even at an affordable price point.

The 12mm model delivers excellent performance for those seeking increased magnification without compromising on image sharpness or clarity. Whether you're a beginner or an experienced observer building out your eyepiece collection, this is a smart and dependable choice.


🧲 Compatible With:

  • All telescopes accepting 1.25” eyepieces, including reflectors, refractors, SCTs, and Maksutovs from Celestron and other major brands.


Refined. Affordable. Astro-Ready.
Add the Celestron Omni 12mm Eyepiece to your setup and enjoy stunning high-contrast views of your favourite celestial objects—night after night.

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.

Celestron Omni 1.25" 12mm Eyepiece

£49.99

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