# Eyepiece Tele Vue Delos 3.5mm 1.25" — high-precision ocular for telescopes

**URL:** https://aio.lv/en/product--oem-edl-035--11131795
**Data updated:** 2026-04-30 18:27 (EEST)
**Category:** Camera Lenses
**Manufacturer:** OEM
**Manufacturer code:** EDL-03/5
**EAN:** 0759270083014
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 475.49 €
**Prices and availability valid until:** 2026-07-15 23:59
**Price without VAT (21%):** 392.97 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--oem-edl-035--11131795

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 25.06.2026 | free |
| Pickup points | 30.06.2026 | 1.99 EUR |
| Courier delivery to door | 30.06.2026 | 4.99 EUR |

## Summary description

Tele Vue Delos 3.5mm 1.25" eyepiece is a high-quality telescope ocular designed for detailed lunar, planetary and double-star observation. With a 3.5mm focal length in a 1.25" barrel, it delivers high magnification suitable for high-resolution viewing and splitting close star pairs. Built for comfortable eye relief and precise focusing, it fits standard 1.25" focuser tubes for amateur and advanced astronomers.

## Long description

The Tele Vue Delos 3.5mm 1.25" eyepiece is a high-precision ocular designed for telescopes and intended for detailed lunar, planetary and double-star observation. With a short 3.5mm focal length in a standard 1.25" barrel it provides high magnification and contrast for high-resolution views. The Delos series emphasizes comfortable eye relief and repeatable focusing, making this eyepiece suitable for extended observing sessions and for splitting close star pairs where stability and sharpness are required.
Advantages
The Delos 3.5mm combines a compact optical layout with well-corrected aberrations to deliver sharp, high-contrast images across the field. Its design provides comfortable eye relief for short focal lengths while maintaining a usable field of view. Mechanical construction is robust and compatible with standard 1.25" focusers, and the eyepiece is engineered for consistent, repeatable focus and good stray-light control.
Suitable for
 Lunar and planetary observation where high magnification is needed
 Splitting close double stars and high-resolution stellar work
 Experienced amateur astronomers using 1.25" focusers
 Sessions that require precise, repeatable focusing
When it may not be suitable
This 3.5mm eyepiece is a high-magnification, narrow-field ocular; it is not intended for wide-field observing, deep-sky imaging, or for use on very-small aperture instruments where image brightness and atmospheric seeing limit practical magnification. Observers with unsteady mounts or poor seeing may find the extreme magnification difficult to use effectively.
Key specifications
 Focal length: 3.5 mm
 Barrel diameter: 1.25 inches
 Optical design: multi-element eyepiece optimized for high contrast and sharpness
 Eye relief: engineered for comfortable viewing at short focal length
 Field of view: moderate apparent field suitable for high-power work
 Construction: robust metal housing with precision focusing interface
How to use
Install the eyepiece into a standard 1.25" focuser and secure it with the focuser's thumbscrew or retention collar. Use it on a telescope with sufficient focal length and aperture to achieve useful magnification without exceeding the limits imposed by atmospheric seeing. Achieve critical focus using slow, precise focuser adjustments; consider using a Bahtinov mask or high-contrast lunar/planetary features to sharpen focus. For comfortable viewing, position your eye to align with the eye relief and avoid touching the eyepiece during observation to maintain steady framing.
What to consider before purchase
 Intended use: best for high-magnification lunar, planetary and double-star work
 Telescope compatibility: designed for standard 1.25" focusers
 Mount and seeing conditions: requires stable mount and good atmospheric seeing for best results
 Field of view and brightness: expect a narrower field and reduced image brightness compared with lower-power eyepieces
Usage recommendations
Use the Tele Vue Delos 3.5mm on medium-to-large aperture telescopes with stable mounts during nights of good seeing. Allow time for the telescope to reach thermal equilibrium, and use precise focuser control or a focusing aid for best resolution. For split-star work, increase magnification gradually to determine the practical limit imposed by seeing and aperture.

## FAQ

### How much does the Tele Vue Delos 3.5mm 1.25" eyepiece cost, and is it available for purchase?

The price is 475.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 25.06.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can Tele Vue Delos 3.5mm 1.25" eyepiece be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All OEM products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized OEM service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/11131795/68742404_large.webp