# Eyepiece Tele Vue Delos 17.3mm 1.25-inch EDL-17/3 72° apparent field

**URL:** https://aio.lv/en/product--oem-edl-173--11587657
**Data updated:** 2026-04-30 18:28 (EEST)
**Category:** Telescopes
**Manufacturer:** OEM
**Manufacturer code:** EDL-17/3
**EAN:** 0759270089054
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 484.49 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 400.40 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--oem-edl-173--11587657

## 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 17.3mm eyepiece (EDL-17/3) is a 1.25-inch astronomical eyepiece with a 72° apparent field designed for visual observing. It delivers a medium focal length view suitable for planetary and deep-sky observation, combining comfortable eye relief and wide apparent field to improve target framing and observer comfort during extended sessions.

## Long description

The Tele Vue Delos 17.3mm 1.25-inch eyepiece EDL-17/3 provides a 72° apparent field designed for visual astronomy. With a medium focal length, this eyepiece balances magnification and field of view to offer comfortable observing of planets, the Moon, star clusters and many deep-sky objects. The Delos design emphasizes extended eye relief and a flat, well-corrected field to reduce edge aberrations and support relaxed viewing during longer sessions.
Advantages
The eyepiece combines a wide 72° apparent field with generous eye relief, making it easier to frame objects and track them without frequent repositioning. Optics are engineered for sharpness across much of the field, reducing coma and field curvature common in simpler eyepieces. The 1.25-inch barrel fits standard visual backings and accessory chains, and the mechanical design includes features intended to maintain comfortable eye position and repeatable centering.
Suitable for
Visual planetary and lunar observation at moderate to high power
Wide-field views of open star clusters and larger deep-sky objects
Observers who need comfortable eye relief for extended sessions
Telescopes with 1.25-inch focuser fittings and visual use setups
When it may not be suitable
This eyepiece is a medium-focal-length visual eyepiece rather than a dedicated planetary high-power or ultra-wide-field eyepiece. It may not be the best choice for extreme high-magnification planetary imaging or for users seeking the widest possible apparent field beyond 72°. For photographic or CCD imaging, a design specifically intended for imaging may be preferable.
Key specifications
Focal length: 17.3 mm
Apparent field of view: 72°
Barrel diameter: 1.25 inch
Designed for visual observing with extended eye relief
How to use
Insert the 1.25-inch barrel securely into your telescope focuser or diagonal and tighten the retaining thumbscrew to prevent rotation. Start focusing at low to moderate magnification and adjust fine focus until the target appears sharp across the field. Use the extended eye relief to position your eye comfortably; this facilitates observing with eyeglass wearers or during long sessions. For best results allow the telescope to reach thermal equilibrium and collimate the optics before high-power use.
What to consider before purchase
Compatibility with your telescope focuser (1.25-inch barrel required)
Whether a 17.3 mm focal length and 72° field fit your observing priorities
Need for extended eye relief if you wear glasses or prefer relaxed viewing
Intended use: visual observing versus imaging
Usage recommendations
Use the Delos 17.3mm eyepiece for medium-power visual sessions—start with bright targets such as the Moon and planets to evaluate centering and sharpness, then move to star clusters and larger nebulae to appreciate the 72° field. Ensure the telescope is well-collimated and thermally stable to maximize edge-to-edge performance.

## FAQ

### How much does the Tele Vue Delos 17.3mm 1.25" Eyepiece cost, and is it available for purchase?

The price is 484.49 € (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 17.3mm 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/11587657/66683629_large.webp