---
product_id: 47558751
title: "Explore Scientific FirstLight AR90mm White Tube Refractor Telescope with Alt/AZ \"U\" Yoke Mount, 500mm f/5.5 Focal Length"
brand: "explore scientific"
price: "68.89 OMR"
currency: OMR
in_stock: true
reviews_count: 7
url: https://www.desertcart.com.om/products/47558751-explore-scientific-firstlight-ar90mm-white-tube-refractor-telescope-with-alt
store_origin: OM
region: Oman
---

# Alt/AZ 'U' Yoke Mount - smooth, precise tracking Smartphone Adapter - capture & share stargazing 90mm Aperture - bright, clear views Explore Scientific FirstLight AR90mm White Tube Refractor Telescope with Alt/AZ "U" Yoke Mount, 500mm f/5.5 Focal Length

**Brand:** explore scientific
**Price:** 68.89 OMR
**Availability:** ✅ In Stock

## Summary

> 🔭 See the universe like never before — your gateway to the stars awaits!

## Quick Answers

- **What is this?** Explore Scientific FirstLight AR90mm White Tube Refractor Telescope with Alt/AZ "U" Yoke Mount, 500mm f/5.5 Focal Length by explore scientific
- **How much does it cost?** 68.89 OMR with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/47558751-explore-scientific-firstlight-ar90mm-white-tube-refractor-telescope-with-alt)

## Best For

- explore scientific enthusiasts

## Why This Product

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

## Key Features

- • **Doublet Lens Design:** Minimizes chromatic aberrations for crisp, high-contrast visuals that bring deep space into focus.
- • **Bright 90mm Aperture:** Unlock vivid views of galaxies, planets, and nebulae with superior light-gathering power.
- • **Smartphone Compatible:** Easily attach your device to capture and share stunning cosmic images with friends and followers.
- • **Complete Stargazing Kit:** Includes 9mm & 20mm Kellner eyepieces, red dot finder, and sturdy aluminum tripod with accessory tray.
- • **Effortless Alt/AZ 'U' Yoke Mount:** Experience smooth, intuitive maneuvering and tracking for seamless celestial exploration.

## Overview

The Explore Scientific FirstLight AR90mm Refractor Telescope features a powerful 90mm aperture and 500mm focal length, delivering up to 125x magnification. Its smooth Alt/AZ 'U' yoke mount ensures easy tracking, while included 9mm and 20mm Kellner eyepieces and a red dot finder enhance viewing precision. Designed for beginners and enthusiasts alike, it comes with a smartphone adapter for capturing celestial images and a sturdy aluminum tripod, making it a portable, all-in-one stargazing solution.

## Description

Explore Scientific first light 90mm Refractor with AZ mount High quality optics for astronomy, science, and outdoor arenas explore scientific offers superior and high quality astronomical instruments designed and manufactured in our own facilities. With our powerful first light telescope Refractor 90mm, you’ll develop a desire to discover the jewels in our solar system and beyond. Highly stable and built to withstand the elements, Take this Doublet telescope everywhere you go from your backyard to a wide open field. next level astronomy exploration from diving into the details of our solar system to uncovering deep Space treasures, Our versatile and powerful first light astronomy telescope Series features an observation kit to suit all of your celestial needs. Each unique product in this new line of stargazing telescopes comes complete with all of the essentials (telescope, sturdy mount, eyepiece and a Red dot viewfinder). telescope offerings include achromatic refractors ranging in Aperture from 70mm to 152mm, from 100mm to 152mm, and Newtonian reflectors from 114mm to an impressive 203mm. 90mm lens diameter 500mm Focal length 125x magnification and 20mm Keller eyepieces smartphone adapter red dot viewfinder aluminum tripod with “U” yoke mount astronomy software about us with over 30 years in the astronomy optics industry, Explore Scientific is on a mission to Make astronomy accessible for all skill levels and to provide a transformative experience with the tools and guidance needed to explore and navigate the skies. The company continues to focus on building its reputation in the astronomy community by designing high quality stargazer telescopes and premium eyepieces with topnotch clarity, contrast, and functionality.

Review: Disappointed - Can’t get an image through the lens. It’s far too short does not extend up high enough.
Review: Works for me - Great beginner's telescope, flimsy tripod though.

## Features

- Stargazing companion - discover galaxies, nebulas, planets and more with our telescope refractor and large 90mm Aperture that packs plenty of light-gathering power.
- Convenient mount - with a simple “U” yoke mount and altitude rod, This mounted telescope is smooth and easy to maneuver and Track objects.
- High quality design - this portable telescope features 9mm and 20mm Kellner Eyepieces, a Red dot viewfinder to help with object location, and a full size tripod with accessory tray.
- Smart device Compatible - stable and sturdy, our 90mm telescope includes an adapter to aid observers when using Smart devices to capture and share images.
- Powerful visuals - the Doublet design of our traveling telescope uses a pair of glass lenses separated by a cushion of air to minimize chromatic aberrations.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0743J26BP |
| Best Sellers Rank | #6,690 in Camera & Photo Products ( See Top 100 in Camera & Photo Products ) #443 in Telescope Refractors |
| Brand Name | Explore Scientific |
| Color | White |
| Customer Reviews | 4.0 4.0 out of 5 stars (26) |
| Date First Available | July 18, 2017 |
| Included Components | (1) Eyepiece, (1) Focuser, (1) Mount, (1) Red-Dot Finder, (1) Smartphone Camera Adapter, (1) Telescope, (1) Tripod |
| Item Dimensions LxWxH | 35.04 x 12.2 x 7.48 inches |
| Item Package Dimensions L x W x H | 35 x 12 x 8 inches |
| Item Weight | 5 Pounds |
| Manufacturer | Explore Scientific (Sporting Goods) |
| Material | Metal |
| Model Name | FirstLight |
| Number of Items | 1 |
| Package Weight | 5.51 Kilograms |
| Part Number | FL-AR90500AZ |
| Size | 90mm |
| Skill Level | Beginner |
| Suggested Users | unisex-adult |

## Product Details

- **Brand:** Explore Scientific
- **Eye Piece Lens Description:** Kellner
- **Finderscope:** Reflex
- **Focus Type:** Manual Focus
- **Item Weight:** 5 Pounds
- **Model Name:** FirstLight
- **Objective Lens Diameter:** 90 Millimeters
- **Power Source:** Adapter
- **Product Dimensions:** 35.04"D x 12.2"W x 7.48"H
- **Telescope Mount Description:** Altazimuth Mount

## Images

![Explore Scientific FirstLight AR90mm White Tube Refractor Telescope with Alt/AZ "U" Yoke Mount, 500mm f/5.5 Focal Length - Image 1](https://m.media-amazon.com/images/I/51TaIHTHlHL.jpg)
![Explore Scientific FirstLight AR90mm White Tube Refractor Telescope with Alt/AZ "U" Yoke Mount, 500mm f/5.5 Focal Length - Image 2](https://m.media-amazon.com/images/I/61OTEcpzOzL.jpg)

## Customer Reviews

### ⭐⭐⭐ Disappointed
*by L***L on August 12, 2020*

Can’t get an image through the lens. It’s far too short does not extend up high enough.

### ⭐⭐⭐⭐ Works for me
*by J***E on June 14, 2020*

Great beginner's telescope, flimsy tripod though.

### ⭐⭐⭐ Mostly disappointed
*by J***O on August 10, 2022*

It seems like a great price for a 90mm coated glass doublet, but it's very frustrating to use. PROS: Mine has a nice objective lens. Views of the moon were surprisingly clear and sharp, if using good eyepieces. I mostly used wide and sharp Explore Scientific 15mm 72 degree and a SvBony zoom (surprisingly great performance for the money). CONS: It has the worst focuser I've ever used (and I've used many low end $40-100 telescopes). It wobbled like a broken wagon wheel when I received it. Tightening the focuser screws kept the focuser knobs stationary, but there's a lot of slop and backlash in the rack, even for a $50 scope, which it isn't. This can be improved by adding a helical fine adjustment focuser (for an additional $45). But there's no way to lock the focus without significant mods. The fine altitude adjustment rod connector has a TON of slop in it, which makes altitude adjustments annoying. You can work around it, but you're constantly reminded that you spent $200 for a telescope that feels like a $50-100 telescope. I tried adding tape to increase the diameter of the screw attaching it to the OTA but didn't see noticeable improvement. The tripod legs are a mix of cheap plastic and extremely thin aluminum extrusion. I planned to fill them with epoxy/rebar to stiffen them up, but haven't done that yet because they're designed in a way that requires drilling out rivets to access the inside. The tripod is also extremely short for a refractor where you have to get underneath it to sight through the finder, which should have been mounted higher. I plan to move the finder to the dew shield (requires opening the scope) and make some longer wood legs for it. The geometry of the mount puts the eyepiece out on a long lever arm from the yoke, so all the flex and slop of the mount+tripod gets magnified into huge wobbles in the view every time you touch the focuser. The end of the altitude adjustment locking bolt is bare metal and doesn't have a piece of plastic to protect the surface of the adjustment rod. Adding a piece of rubber from a garden hose gasket under the locking knob protects the rod from being marred by the bare bolt head. It also improves the feel of the altitude adjustment motion. I would return it except I don't want to pay ES's restocking fee and return shipping, which would be the cost of another cheap scope. Maybe one day I'll try to 3d print a focuser locking ring for it and/or a dovetail for a different mount. Overall, I wouldn't recommend this telescope. I consider any of the Zhumell table top dobs a better option, or even one of the other (appropriately priced) toy scopes provided that they take standard 1.25" eyepieces.

---

## 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.com.om/products/47558751-explore-scientific-firstlight-ar90mm-white-tube-refractor-telescope-with-alt](https://www.desertcart.com.om/products/47558751-explore-scientific-firstlight-ar90mm-white-tube-refractor-telescope-with-alt)

---

*Product available on Desertcart Oman*
*Store origin: OM*
*Last updated: 2026-02-22*