---
product_id: 80108085
title: "Astromania 2 Inch Diagonal 45-Degree Erect-Image Prism for Telescope - Image Erecting BAK4 Prism with Anti-Reflection Coating That Provides Sharp and Clear Image - with 2 to 1.25 Eyepiece Adapter"
brand: "astromania"
price: "S$333"
currency: SGD
in_stock: true
url: https://www.desertcart.sg/products/80108085-astromania-2-inch-diagonal-45-degree-erect-image-prism-telescope
store_origin: SG
region: Singapore
---

# 2-inch diagonal prism for versatile telescope fit Precision brass clamping rings & chrome thumb screws for secure setup BAK4 glass with anti-reflective coating for crystal-clear views Astromania 2 Inch Diagonal 45-Degree Erect-Image Prism for Telescope - Image Erecting BAK4 Prism with Anti-Reflection Coating That Provides Sharp and Clear Image - with 2 to 1.25 Eyepiece Adapter

**Brand:** astromania
**Price:** S$333
**Availability:** ✅ In Stock

## Summary

> 🔭 Elevate your stargazing game with crystal-clear views and effortless setup!

## Quick Answers

- **What is this?** Astromania 2 Inch Diagonal 45-Degree Erect-Image Prism for Telescope - Image Erecting BAK4 Prism with Anti-Reflection Coating That Provides Sharp and Clear Image - with 2 to 1.25 Eyepiece Adapter by astromania
- **How much does it cost?** S$333 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/80108085-astromania-2-inch-diagonal-45-degree-erect-image-prism-telescope)

## Best For

- astromania enthusiasts

## Why This Product

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

## Key Features

- • **Durable, Sleek Build:** All-aluminum black anodized body with matte black internal threads minimizes stray light and ensures long-lasting performance.
- • **Universal Compatibility:** Includes 2 to 1.25-inch eyepiece adapter, seamlessly fitting a wide range of telescope accessories.
- • **Ergonomic 45° Viewing Angle:** Enjoy comfortable, correct-image viewing without awkward positioning—perfect for extended stargazing sessions.
- • **Crystal-Clear Precision Optics:** BAK4 prism with anti-reflective coating delivers razor-sharp, true-to-life images for your astronomical adventures.
- • **Secure & Damage-Free Attachment:** Brass clamping rings and large chrome-plated thumb screws guarantee a firm, scratch-free connection every time.

## Overview

The Astromania 2 Inch Diagonal 45-Degree Erect-Image Prism features a premium BAK4 optical prism with anti-reflective coating for sharp, accurate images. Its 45° angle provides correct image orientation, while the included 2 to 1.25-inch adapter ensures broad compatibility. Crafted from anodized aluminum with matte black internal threads, it reduces stray light and offers durable, secure attachment via brass clamping rings and chrome thumb screws—ideal for serious amateur astronomers seeking precision and reliability.

## Description

Astromania 2 Inch Diagonal 45-Degree Erect-Image Prism for Telescope - Image Erecting BAK4 Prism with Anti-Reflection Coating That Provides Sharp and Clear Image - with 2 to 1.25 Eyepiece Adapter

## Features

- The BAK4 prism with an anti-reflective coating and integrated high-quality optical prism instead of a mirror enhances accuracy; making it ideal for precise astronomical observations and ensuring clear and sharp images
- The inclusion of 2 Inch-1.25 inch adapters allows for seamless connectivity with both 1.25 Inch and 2 Inch accessories; catering to a wider range of requirements
- This wide 45 degree angle makes you view correct image from telescope stand; makes it easier to observe
- All aluminum black anodized with smooth surface and have long service life
- The product has a matte black internal thread design to prevent stray light reflection; additionally; the attachment design includes brass clamping rings and large chrome-plated thumb screws for a safe and secure connection without causing damage

## Product Details

- **Brand:** Astromania
- **Eye Piece Lens Description:** Prism
- **Objective Lens Diameter:** 31 Millimeters
- **Telescope Mount Description:** Altazimuth Mount
- **Focus Type:** Manual Focus
- **Finderscope:** Reflex
- **Item Weight:** 19.1 Ounces
- **Compatible Devices:** 1.25 inch accessories, 2 inch accessories
- **Lens Coating Description:** Anti-reflection
- **Field Of View:** 45 Degrees

## Images

![Astromania 2 Inch Diagonal 45-Degree Erect-Image Prism for Telescope - Image Erecting BAK4 Prism with Anti-Reflection Coating That Provides Sharp and Clear Image - with 2 to 1.25 Eyepiece Adapter - Image 1](https://m.media-amazon.com/images/I/71NKZ5WnmFL.jpg)
![Astromania 2 Inch Diagonal 45-Degree Erect-Image Prism for Telescope - Image Erecting BAK4 Prism with Anti-Reflection Coating That Provides Sharp and Clear Image - with 2 to 1.25 Eyepiece Adapter - Image 2](https://m.media-amazon.com/images/I/81QybWd6BTL.jpg)
![Astromania 2 Inch Diagonal 45-Degree Erect-Image Prism for Telescope - Image Erecting BAK4 Prism with Anti-Reflection Coating That Provides Sharp and Clear Image - with 2 to 1.25 Eyepiece Adapter - Image 3](https://m.media-amazon.com/images/I/81QIYKBwbBL.jpg)
![Astromania 2 Inch Diagonal 45-Degree Erect-Image Prism for Telescope - Image Erecting BAK4 Prism with Anti-Reflection Coating That Provides Sharp and Clear Image - with 2 to 1.25 Eyepiece Adapter - Image 4](https://m.media-amazon.com/images/I/81dkx2oWAhL.jpg)
![Astromania 2 Inch Diagonal 45-Degree Erect-Image Prism for Telescope - Image Erecting BAK4 Prism with Anti-Reflection Coating That Provides Sharp and Clear Image - with 2 to 1.25 Eyepiece Adapter - Image 5](https://m.media-amazon.com/images/I/81stabfcj6L.jpg)

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-02-13*