# O‑III Filter 12nm 1.25" for telescopes, Explore Scientific

**URL:** https://aio.lv/en/product--oem-100065537--11105017
**Data updated:** 2026-06-23 14:54 (EEST)
**Category:** Telescopes
**Manufacturer:** OEM
**Manufacturer code:** 100065537
**EAN:** 4007922000046
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 78.49 €
**Prices and availability valid until:** 2026-07-24 23:59
**Price without VAT (21%):** 64.87 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--oem-100065537--11105017

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.07.2026 | free |
| Pickup points | 08.07.2026 | 1.89 EUR |
| Courier delivery to door | 08.07.2026 | 4.99 EUR |

## Summary description

Narrowband O‑III filter by Explore Scientific, 12 nm bandwidth in a 1.25" (31.7 mm) format. Designed to transmit doubly ionized oxygen emission lines while blocking unwanted light, it improves contrast on nebulae and emission regions when used with telescopes and compatible eyepieces or cameras. Useful for visual observing and astrophotography under light-polluted or dark skies.

## Long description

The Explore Scientific O-III 12nm 1.25" filter is a high-quality narrowband optical accessory designed to enhance the observation of nebulae and emission regions. By isolating the specific emission lines of doubly ionized oxygen, this filter effectively blocks unwanted light pollution and background sky glow. Its 12nm bandwidth provides a precise balance between contrast enhancement and light transmission, making it an essential tool for both visual observers and astrophotographers looking to reveal hidden details in deep-sky objects.
Advantages
This filter offers significant improvements in image contrast by selectively allowing light from ionized oxygen to pass through while suppressing the light from other wavelengths. The 1.25-inch standard size ensures compatibility with a wide range of telescope focusers, filter wheels, and eyepieces. Its robust construction ensures durability during frequent use in various environmental conditions, providing a reliable solution for long-term astronomical observation and imaging projects.
Suitable for
Visual observation of planetary nebulae and supernova remnants
Astrophotography of emission nebulae
Reducing the impact of light pollution in urban or suburban areas
Enhancing contrast for faint deep-sky objects
When it may not be suitable
This filter is not intended for general lunar or planetary observation, as it is specifically tuned to oxygen emission lines and will significantly alter the color balance of broadband light sources. It is also not suitable for use with telescopes that have very small apertures, as the light reduction may make the image too dim for comfortable viewing.
Key specifications
Bandwidth: 12 nm
Size: 1.25 inches (31.7 mm)
Filter type: Narrowband O-III
Compatibility: Standard 1.25" telescope eyepieces and cameras
How to use
To use the filter, simply thread it onto the barrel of your 1.25-inch eyepiece or into a compatible filter wheel or camera nosepiece. Once securely attached, insert the assembly into your telescope's focuser. Adjust your focus as necessary, as the addition of a filter may slightly shift the focal point. For visual use, allow your eyes to dark-adapt before observing to maximize the visibility of the enhanced nebular structures.
What to consider before purchase
Ensure your telescope focuser or camera setup supports 1.25-inch threaded accessories
Verify that your target objects are emission-type nebulae, as this filter will not improve views of galaxies or star clusters
Consider the aperture of your telescope, as narrowband filters require sufficient light gathering power
Usage recommendations
For the best results, use this filter with telescopes of at least 4-6 inches in aperture to maintain sufficient image brightness. When performing astrophotography, ensure your tracking mount is accurately aligned to compensate for the longer exposure times often required with narrowband filters.

## FAQ

### How much does the O‑III Filter 12nm 1.25" — Explore Scientific cost, and is it available for purchase?

The price is 78.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 5 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 03.07.2026 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 O‑III Filter 12nm 1.25" — Explore Scientific 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/11105017/66727578_large.webp