---
product_id: 746133625
title: "Kasai Trading GSO 0.5 x 1.25 inch Focal Reducer, 1.2 inch (31.7 mm) Diameter (Japan Genuine Direct Sale)"
brand: "kasai"
price: "6542 som"
currency: KGS
in_stock: true
url: https://www.desertcart.kg/products/746133625-kasai-trading-gso-0-5-x-1-25-inch-focal
store_origin: KG
region: Kyrgyzstan
---

# 0.5x focal reduction for ultra-wide views Standard 31.7mm (1.25") diameter mount for versatile compatibility Fully multi-coated 2-ball lens for crystal clarity Kasai Trading GSO 0.5 x 1.25 inch Focal Reducer, 1.2 inch (31.7 mm) Diameter (Japan Genuine Direct Sale)

**Brand:** kasai
**Price:** 6542 som
**Availability:** ✅ In Stock

## Summary

> 🔭 Unlock wider horizons with precision optics!

## Quick Answers

- **What is this?** Kasai Trading GSO 0.5 x 1.25 inch Focal Reducer, 1.2 inch (31.7 mm) Diameter (Japan Genuine Direct Sale) by kasai
- **How much does it cost?** 6542 som with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/746133625-kasai-trading-gso-0-5-x-1-25-inch-focal)

## Best For

- kasai enthusiasts

## Why This Product

- Trusted kasai brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact & Lightweight:** Only 30g and 3.2cm in size—perfect for on-the-go professionals demanding quality without bulk.
- • **Crystal-Clear Imaging:** Fully multi-coated optics minimize reflections and maximize light transmission.
- • **Seamless Compatibility:** Fits standard 31.7mm barrel threads on CCD cameras and eyepieces effortlessly.
- • **Expand Your Field of Vision:** Achieve up to 0.6x magnification reduction for breathtaking wide-angle views.
- • **Precision Engineering from Japan:** Genuine Kasai Trading product ensuring top-tier optical performance and durability.

## Overview

The Kasai Trading GSO 0.5 x 1.25 inch Focal Reducer is a precision-engineered optical accessory designed to reduce focal length by approximately 0.6x, expanding your field of view. Featuring a fully multi-coated 2-ball lens and a standard 31.7mm diameter mount, it seamlessly attaches to CCD cameras and eyepieces. Lightweight and compact, this genuine Japanese product enhances imaging clarity and versatility for professional and enthusiast astronomers alike.

## Description

A convenient reducer that can be attached to the 31.7mm barrel tip filter thread on CCD cameras and eyepieces. When mounted on a standard eyepiece, you will get a reduction rate of about 0.6 x (Note: it fluctuates from 0.5 to 0.7 x depending on the barrel length and focal position. It is also very useful for eyesight, such as when you want to easily achieve a low magnification and wide field of vision with your own eyepiece. Fully multi-coated 2-ball lens Includes filter screws on front of lens cell.

## Features

- 2-piece 0.5 x Focal Reducer / Fully Multi-Coated
- 31.7mm (1.25") Diameter / Mounting Standard M28.5
- Can be attached to CCD camera, eyepiece, eyepiece adapter, etc
- Plastic case (with urethane pad) standard included
- GSO Corporation Japan General Distributor Co., Ltd

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | KASAI |
| Zoom Range (including digital) | 0.5 |
| Aperture (wide) | 0.6 Millimeters |
| Lens type | This lens is a convenient reducer that attaches to a 31.7mm barrel tip filter thread on CCD cameras and eyepieces. When mounted on a standard eyepiece, you will get about 0.6x shrinkage. Fully multi-coated 2-bead lens with filter screw on front of lens cell |
| Lens Configuration | Teleconverter |
| Image Stabilization | No |
| Lens Motor Type | プライム |
| Product Dimensions | 3.2 x 3.2 x 1.3 cm; 30 g |

## Product Details

- **Brand:** KASAI
- **Focal Length Description:** 0.6x focal length reduction
- **Lens Type:** Teleconverter
- **Camera Lens Description:** This lens is a convenient reducer that attaches to a 31.7mm barrel tip filter thread on CCD cameras and eyepieces. When mounted on a standard eyepiece, you will get about 0.6x shrinkage. Fully multi-coated 2-bead lens with filter screw on front of lens cell
- **Lens Design:** Prime

## Images

![Kasai Trading GSO 0.5 x 1.25 inch Focal Reducer, 1.2 inch (31.7 mm) Diameter (Japan Genuine Direct Sale) - Image 1](https://m.media-amazon.com/images/I/31GI6fwXnwL.jpg)

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.kg/products/746133625-kasai-trading-gso-0-5-x-1-25-inch-focal](https://www.desertcart.kg/products/746133625-kasai-trading-gso-0-5-x-1-25-inch-focal)

---

*Product available on Desertcart Kyrgyzstan*
*Store origin: KG*
*Last updated: 2026-01-28*