# 2" O-III Narrowband Filter Beta 2961178 6.5 nm for Astrophotography

**URL:** https://aio.lv/en/product--beta-2961178--11370901
**Data updated:** 2026-03-31 13:04 (EEST)
**Category:** Camera Filters
**Manufacturer:** Beta
**Manufacturer code:** 2961178
**EAN:** 4047825047151
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 231.99 €
**Prices and availability valid until:** 2026-07-07 23:59
**Price without VAT (21%):** 191.73 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--beta-2961178--11370901

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 16.06.2026 | free |
| Pickup points | 19.06.2026 | 1.99 EUR |
| Courier delivery to door | 19.06.2026 | 4.99 EUR |

## Summary description

2-inch O-III narrowband filter Beta 2961178 with 6.5 nm bandwidth designed for astrophotography and visual use. It transmits doubly ionized oxygen emission lines while reducing background light, improving contrast of nebulae and faint oxygen-rich targets. Suitable for use in 2" filter holders on telescopes and CCD/CMOS imaging systems.

## Long description

The Beta 2" O-III Narrowband Filter with a 6.5 nm bandwidth is designed for astrophotography and visual observation of oxygen-rich nebulae. It selectively transmits the doubly ionized oxygen (O-III) emission lines while reducing continuum and artificial background light. The filter fits standard 2" filter holders and is suitable for use with refractors, reflectors and common CCD/CMOS imaging systems to enhance contrast of faint emission regions.
Advantages
This O-III narrowband filter offers a narrow 6.5 nm full-width at half-maximum to isolate oxygen emission lines, improving signal-to-noise ratio on O-III dominated objects. By attenuating broadband skyglow and light pollution, it increases visual and photographic contrast without altering telescope focus significantly. The 2" mounting format provides mechanical compatibility with many filter wheels and visual adapters.
Suitable for
Imaging oxygen-rich planetary and emission nebulae
Visual observation of nebular structure under light-polluted skies
Use in 2" filter holders, visual backends, and filter wheels for CCD/CMOS cameras
Key specifications
Filter type: Narrowband O-III
Clear aperture: 2-inch mounting format
Bandwidth (FWHM): 6.5 nm
Designed transmission: centered on O-III emission lines
Compatibility: telescopes and imaging systems with 2" filter holders
How to use
Install the filter in a 2" filter holder, visual adapter or compatible filter wheel according to the holder’s instructions. For imaging, place the filter in the optical path in front of the camera sensor; for visual use insert it into the diagonal or eyepiece holder. Frame the target nebula and adjust exposure time and gain to account for reduced overall light throughput. When using the filter with color cameras, consider longer exposures or stacking multiple frames to recover faint detail.
Usage recommendations
Align and collimate the telescope before inserting the filter to ensure best image quality. Use the filter in darker parts of the sky for optimal results, and combine with appropriate calibration frames for astrophotography workflows.

## FAQ

### How much does the 2" O-III Filter Beta 2961178 6.5 nm cost, and is it available for purchase?

The price is 231.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 6 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 16.06.2026 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 2" O-III Filter Beta 2961178 6.5 nm 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 Beta 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 Beta 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/11370901/65858282_large.webp