---
product_id: 50610621
title: "NexStar 90SLT"
brand: "celestron"
price: "€ 1293.47"
currency: EUR
in_stock: null
reviews_count: 8
category: "Celestron"
url: https://www.desertcart.nl/products/50610621-nexstar-90slt
store_origin: NL
region: Netherlands
---

# 90mm Maksutov-Cassegrain aperture Fully computerized Alt-Azimuth mount Quick-release fork-arm & tool-free setup NexStar 90SLT

**Brand:** celestron
**Price:** € 1293.47
**Availability:** ❌ Out of Stock

## Summary

> 🌌 Own the night sky—because the universe waits for no one!

## Quick Answers

- **What is this?** NexStar 90SLT by celestron
- **How much does it cost?** € 1293.47 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/50610621-nexstar-90slt)

## Best For

- celestron enthusiasts

## Why This Product

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

## Key Features

- • **Effortless GoTo Navigation:** Locate and track 36,000+ celestial objects instantly with the intuitive computerized mount—no star knowledge needed.
- • **Crystal-Clear Lunar & Planet Views:** Experience razor-sharp details of the Moon, Saturn’s rings, and Jupiter’s moons with premium StarBright XLT coatings.
- • **Trusted Brand with 2-Year Warranty:** Backed by Celestron’s legacy since 1960, ensuring reliability and expert customer support.
- • **Setup in Minutes, No Tools Required:** Quick-release fork-arm and sturdy tripod let you start stargazing fast—perfect for busy pros on the go.
- • **Bonus Starry Night Software Included:** Unlock printable sky maps and immersive 3D star renderings to elevate your astronomy game.

## Overview

The Celestron NexStar 90SLT-Mak is a portable, computerized Maksutov-Cassegrain telescope featuring a 90mm aperture and 1200mm focal length. Its fully computerized Alt-Azimuth mount with quick-release fork-arm enables fast, tool-free setup and automatic tracking of over 36,000 celestial objects. Included Starry Night software enhances your stargazing experience with detailed sky maps and 3D visualizations. Powered by 8 AA batteries or optional AC adapter, it balances portability, ease of use, and sharp optics—ideal for beginner to intermediate astronomers seeking a premium, hassle-free introduction to the cosmos.

## Description

Manufacturer's Description Designed to be an affordable entry level to mid-level computerized GoTo telescope, the NexStar SLT refractors, reflectors, and Maks are available in the most popular sizes and are loaded with valuable design features. With preassembled, adjustable stainless steel tripods, and quick release fork arms and tubes, NexStar SLT telescopes can be set up in a matter of minutes – with no tools required! You can see details of the lunar surface, Venus and its phases, polar caps on Mars, Jupiter and its four moons, Saturn with its rings plainly visible and much more! Most NexStar SLT’s can also be used as a land-based spotting telescope.Intelligent DesignPowered by 8 AA (user supplied) batteries or an optional AC adapter these NexStar GoTo’s love to travel. The internal battery compartment provides power to the high precision servo motors for rigid low-vibration performance while eliminating cord wrap issues associated with external battery packs.With the NexStar’s ergonomically designed hand control, the user is free to remove the hand control from its holder for remote use or leave it cradled for hands-free operation. With a touch of a button you can select the object catalog, change the slew speed, view fascinating information about an object, or simply know if a desired object is visible in the sky.Celestron’s Revolutionary SkyAlignUsing Celestron’s patented SkyAlign (patent pending), simply input the date, time and location into the hand control then slew the telescope to any three bright celestial objects in the sky. You do not need to know the names of the stars – you can even pick the Moon or bright planets! Product Description Designed to be an affordable entry level to mid-level computerized GoTo telescope, the NexStar SLT refractors, reflectors, and Maks are available in the most popular sizes and are loaded with valuable design features. With preassembled, adjustable stainless steel tripods and quick release fork arms and tubes, NexStar SLT telescopes can be set up in a matter of minutes – with no tools required! You can see details of the lunar surface, Venus and its phases, polar caps on Mars, Jupiter and its four moons, Saturn with its rings plainly visible and much more! Most NexStar SLTs can also be used as a land-based spotting telescope.Intelligent DesignPowered by 8 AA (user supplied) batteries or an optional AC adapter (#18778), these NexStar GoTos love to travel. The internal battery compartment provides power to the high precision servo motors for rigid low-vibration performance while eliminating cord wrap issues associated with external battery packs.With the NexStar’s ergonomically designed hand control, the user is free to remove the hand control from its holder for remote use or leave it cradled for hands-free operation. With a touch of a button, you can select the object catalog, change the slew speed, view fascinating information about an object or simply know if a desired object is visible in the sky.Celestron’s Revolutionary SkyAlignUsing Celestron’s patented SkyAlign, simply input the date, time and location into the hand control then slew the telescope to any three bright celestial objects in the sky. You do not need to know the names of the stars – you can even pick the Moon or bright planets!

Review: Good telescope and leaves you wanting more - I'm not professional, these are just my impressions. WARNING 1: this might be a begining of an expensive hobby! You will likely want accessories, filters, eyepieces, and maybe larger aperture for deep sky. Search for what you can see with a telescope (especially if you're interested in Nebulae/galaxies) if it's you first one to manage expectations. WARNING 2: you won't see details and colours you see in pictures online including mine (except maybe for Moon). Cameras are far more sensitive and have longer exposures than our eyes. Search Orion Nebula or M81 through a 5, 8, 10 inch telescope for example to have an idea and compare with pictures. Overall, I'm very happy with the telescope, optics seem quite good without noticeable chromatic aberrations, tracking is OK with options to fine-tune during use. After using this, I'm curious to try something with a larger aperture to see more details in deep sky, but it doesn't mean I'm enjoying this telescope any less. For me it hits a good balance of power, ease of use, and portability. Though 8-inch aperture ones would probably last you much longer if you're going to get into the hobby more seriously, those are much more expensive and heavy. You are paying a premium for goto functionality and compact design compared to some other 5-inch options, but I found goto to be very helpful especially at first. This vs a Dobsonian: Observing with a tripod is so much easier especially when what you're looking at is low. Optical tube is much more compact compared to Dob of comparable aperture and f-ratio, but later would probably be cheaper. As far as I can tell, a typical Newtonian reflector would be far less tolerant to collimation issues than this design. Learning with this is certainly easier. If it's your first telescope - be prepared you won't see the colours and details you see in pictures online. Those are captured with cameras with longer exposures and higher sensitivity than human eyes and are heavily processed. This being said, I got this picture of Orion Nebula with an old unmodified DSLR through this telescope in a single exposure, no stacking or additional hardware. What can you see? Moon - amazing! Very bright, very sharp clear small details, no weird colours. Planets - they appear about small pea-sized, rings of Saturn are clearly visible, as well as bands of Jupiter (in colour). You can get them bigger with additional eyepieces or Barlow lenses, but with ones I got (admittedly not the highest quality) I couldn't see more details - same thing just bigger and a little blurrier. Deep sky objects - probably the coolest thing to photograph, but visually seeing it for the first time it's amazing how dim those are in general. I could see Orion Nebula and some other DSOs. In Orion Nebula I could see general shape, but no colour when observing from Peak District. You can probably see more from a darker site, but I haven't tested it. Overall the aperture is considered small for visual DSO observation, but I could see something. Moon, snow, atmospheric conditions (e.g. turbulent air) will all affect your observation. Relative positions of earth to other planet also affects the details you see. Mount, focuser etc: I've read complaints about the mount not being sturdy enough online. It's definitely more shaky than a heavy Dobsonian, but for me it's perfectly useable. You do need to wait a couple seconds after adjusting focus for it to get stable, but you absolutely can get clear view and pictures after that. GoTo depends on how good your alignment is and has couple clever features - there is a "precision goto" option in the menu where it first navigates to nearby easy to see object for you to correct error and then it goes to actual target. Mount doesn't fold flat with optical tube as SE model does. The tripod is a bit bigger than a typical photo tripod when folded. If you're thinking of getting this and using mount for later optical tube upgrades, search for mount limits - you probably won't put much more onto it. I've read online people ignoring limits and putting 6se and even 8se on it, but it will be even shakier and I have no idea how long it will last if you did it and I doubt warranty will cover it. You need to align red dot finder and the telescope before observation, otherwise finding anything is very difficult. The mount is Alt-Az, as opposed to equatorial if it makes difference for you.
Review: Excellent starter telescope - As a former professional astronomer and user of other amateur telescopes I bought this to try and introduce my children to observing and am mainly comparing this to a 6 inch Newtonian reflector with an equatorial mount which has served me well in the past, but is very large and heavy to set up, so an easier alternative was called for. The first night I used this I was hampered by cloud, so could only do a basic setup and some initial lunar observing, but I was pleased to find that this was easy to set up in a short period of time, using the quick setup guide. The lunar views I got were excellent and my kids (and even my wife!) were enthralled with the first views of the moon that we obtained. The second night, although cloud was again an issue, I managed to set the scope up fully. the set up was easy, following the instructions, although it is sometimes tricky to remember that the arrow buttons are only used for controlling the movements of the scope from the handset and not navigating the menus, however they were largely self-explanatory and made the initial setup easy. I would advise using a custom site for alignment using a smartphone with GPS (almost ubiquitous these days) to obtain the precise location, just remember you will need the location in degrees, minute and seconds of arc, rather than decimal. This is quite easy to find with a quick internet search on a smartphone however. Exact times from a reliable source, such as a synced smartphone is also required, along with your time zone. Once these are in you can choose to align the scope using any three bright stars or other celestial objects (moon or planets), simply align the object in the finder scope, then centralise in the eyepiece and align using the handset. This was done in minimal time, even with poor visibility due to cloud and the computer accurately aligned the scope at the first attempt with no need for firmware updates or similar for the handset. Following alignment I used the sky tour to find appropriate objects and after checking that the sky model was correct (it was able to find the moon without difficulty in the solar system mode) I used the handset to move to Andromeda, which was visible as a fuzzy patch, despite poor visibility and quite bad light pollution. The tracking seems to work fairly well and will keep an object in view for a significant amount of time (quite sufficient for real-time observing using the eyepiece), but did exhibit some element of drift, so would not be suitable for deep sky astrophotography, but this is to be expected with an alt-azimuth mount, as compared to an equatorial setup. Unfortunately, the sky conditions deteriorated further preventing any more testing on other objects, but overall this telescope is easy to set up and provides a quick means of finding astronomical objects. As a starter scope at a reasonable price it would seem that it is difficult to beat. In terms of power, I did buy the external battery pack which allows extended observing and this seems to be the best way to power the scope as while using the internal 8xAA batteries would avoid any problems with cord entanglement, the lack of battery life may limit it without a substantial supply. Cord length and wrapping would be even more of an issue with a mains powered supply and could be problematic for anything more than a small distance outside. The scope does need power to operate though and cannot really be operated without it, which is definitely a downside if you were wanting the use it in an unpowered alt-azimuth mode. Overall, this seems to provide a good observing experience for the aperture and price and is highly recommended for a beginner. Obviously, you could get a larger aperture without the goto function for the same price, but this really wins on convenience. I look forward to may happy nights observing with my kids in the near future.

## Features

- HIGH-QUALITY: Deliver sharp and detailed images of the moon, planets and deep-sky objects with your 90mm Maksutov-Cassegrain telescope
- FULLY COMPUTERISED ALTAZIMUTH MOUNT: Allows you to automatically locate and track celestial objects with the push of a button
- QUICK-RELEASE FORK-ARM MOUNT, STURDY TRIPOD AND ACCESSORY TRAY: Enables you to set up your equipment in minutes without any tools or hassle, providing a stable and durable base for your telescope and your accessories
- BONUS FREE STARRY NIGHT ASTRONOMY SOFTWARE: Download with a 36,000-object database, printable sky maps and enhanced images including 3D renderings of stars, exoplanets and galaxies
- UNBEATABLE WARRANTY AND CUSTOMER SUPPORT: Buy with confidence from the world’s #1 telescope brand, based in California since 1960. You’ll also receive a 2-year warranty

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0038LX8WU |
| Best Sellers Rank | 24,416 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 63 in Telescopes |
| Box Contents | Telescope, 9mm and 25mm Eypieces |
| Brand | Celestron |
| Brand Name | Celestron |
| Coating | StarBright XLT |
| Compatible Devices | Camera, Laptop, Smartphone, Tablet |
| Country of Origin | China |
| Customer Reviews | 4.2 out of 5 stars 3,444 Reviews |
| Exit Pupil Diameter | 1.88 Millimeters |
| Eye Piece Lens Description | Plossl |
| Eye piece lens description | Plossl |
| Field Of View | 1.7 Degrees |
| Finderscope | Built-on StarPointer™ red dot finderscope |
| Focal Length Description | 1200 mm millimeters |
| Focus Type | Manual Focus |
| Global Trade Identification Number | 00050234220873 |
| Item Dimensions D x W x H | 101.6D x 48.3W x 27.9H centimetres |
| Item Weight | 6.9 Kilograms |
| Manufacturer | Celestron |
| Model Name | NexStar 90 SLT Maksutov |
| Model name | NexStar 90 SLT Maksutov |
| Mount | Computerized Altitude-Azimuth Single Fork Arm |
| Number of Batteries | 1 Lithium Metal batteries required. (included) |
| Objective Lens Diameter | 90 Millimetres |
| Objective lens diameter | 90 Millimetres |
| Optical tube length | 205 Millimetres |
| Optical-Tube Length | 205 Millimetres |
| Power Source | Battery Powered |
| Telescope mount description | Computerized Altitude-Azimuth Single Fork Arm |
| UPC | 050234220873 |
| Zoom Ratio | 111x |

## Product Details

- **Brand:** Celestron
- **Eye piece lens description:** Plossl
- **Finderscope:** Built-on StarPointer™ red dot finderscope
- **Focus type:** Manual Focus
- **Model name:** NexStar 90 SLT Maksutov
- **Objective lens diameter:** 90 Millimetres
- **Optical tube length:** 205 Millimetres
- **Power source:** Battery Powered
- **Product dimensions:** 101.6D x 48.3W x 27.9H centimetres
- **Telescope mount description:** Computerized Altitude-Azimuth Single Fork Arm

## Images

![NexStar 90SLT - Image 1](https://m.media-amazon.com/images/I/61BioANnWbL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: Do you attach this to a computer ? also can you attach a camera ? thankyou**
A: No you don’t attach to a computer. You need to buy an adapter if you want to attach a camera.

**Q: Does any have a comparison between this and the slightly dearer celestron 11049 nexstar 4 se computerised telescope**
A: I don't think there will be any difference in the operation of the scope ie. The computer side of it and the set up .The only proberbal difference is the size of the lense ie (focal lenth).I would Google it to find out.All depends on how you want to view objects. Hope this helps you abit.Cheers Baldeagle.

**Q: Can you connect this to a screen for easy viewing for children with glasses, if not can anyone recommend some thing?**
A: The telescope didn’t work at all. It couldn’t find the stars even after setting it up.
I sent it back 3 days after

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good telescope and leaves you wanting more
*by A***R on 11 February 2024*

I'm not professional, these are just my impressions. WARNING 1: this might be a begining of an expensive hobby! You will likely want accessories, filters, eyepieces, and maybe larger aperture for deep sky. Search for what you can see with a telescope (especially if you're interested in Nebulae/galaxies) if it's you first one to manage expectations. WARNING 2: you won't see details and colours you see in pictures online including mine (except maybe for Moon). Cameras are far more sensitive and have longer exposures than our eyes. Search Orion Nebula or M81 through a 5, 8, 10 inch telescope for example to have an idea and compare with pictures. Overall, I'm very happy with the telescope, optics seem quite good without noticeable chromatic aberrations, tracking is OK with options to fine-tune during use. After using this, I'm curious to try something with a larger aperture to see more details in deep sky, but it doesn't mean I'm enjoying this telescope any less. For me it hits a good balance of power, ease of use, and portability. Though 8-inch aperture ones would probably last you much longer if you're going to get into the hobby more seriously, those are much more expensive and heavy. You are paying a premium for goto functionality and compact design compared to some other 5-inch options, but I found goto to be very helpful especially at first. This vs a Dobsonian: Observing with a tripod is so much easier especially when what you're looking at is low. Optical tube is much more compact compared to Dob of comparable aperture and f-ratio, but later would probably be cheaper. As far as I can tell, a typical Newtonian reflector would be far less tolerant to collimation issues than this design. Learning with this is certainly easier. If it's your first telescope - be prepared you won't see the colours and details you see in pictures online. Those are captured with cameras with longer exposures and higher sensitivity than human eyes and are heavily processed. This being said, I got this picture of Orion Nebula with an old unmodified DSLR through this telescope in a single exposure, no stacking or additional hardware. What can you see? Moon - amazing! Very bright, very sharp clear small details, no weird colours. Planets - they appear about small pea-sized, rings of Saturn are clearly visible, as well as bands of Jupiter (in colour). You can get them bigger with additional eyepieces or Barlow lenses, but with ones I got (admittedly not the highest quality) I couldn't see more details - same thing just bigger and a little blurrier. Deep sky objects - probably the coolest thing to photograph, but visually seeing it for the first time it's amazing how dim those are in general. I could see Orion Nebula and some other DSOs. In Orion Nebula I could see general shape, but no colour when observing from Peak District. You can probably see more from a darker site, but I haven't tested it. Overall the aperture is considered small for visual DSO observation, but I could see something. Moon, snow, atmospheric conditions (e.g. turbulent air) will all affect your observation. Relative positions of earth to other planet also affects the details you see. Mount, focuser etc: I've read complaints about the mount not being sturdy enough online. It's definitely more shaky than a heavy Dobsonian, but for me it's perfectly useable. You do need to wait a couple seconds after adjusting focus for it to get stable, but you absolutely can get clear view and pictures after that. GoTo depends on how good your alignment is and has couple clever features - there is a "precision goto" option in the menu where it first navigates to nearby easy to see object for you to correct error and then it goes to actual target. Mount doesn't fold flat with optical tube as SE model does. The tripod is a bit bigger than a typical photo tripod when folded. If you're thinking of getting this and using mount for later optical tube upgrades, search for mount limits - you probably won't put much more onto it. I've read online people ignoring limits and putting 6se and even 8se on it, but it will be even shakier and I have no idea how long it will last if you did it and I doubt warranty will cover it. You need to align red dot finder and the telescope before observation, otherwise finding anything is very difficult. The mount is Alt-Az, as opposed to equatorial if it makes difference for you.

### ⭐⭐⭐⭐⭐ Excellent starter telescope
*by A***R on 2 January 2020*

As a former professional astronomer and user of other amateur telescopes I bought this to try and introduce my children to observing and am mainly comparing this to a 6 inch Newtonian reflector with an equatorial mount which has served me well in the past, but is very large and heavy to set up, so an easier alternative was called for. The first night I used this I was hampered by cloud, so could only do a basic setup and some initial lunar observing, but I was pleased to find that this was easy to set up in a short period of time, using the quick setup guide. The lunar views I got were excellent and my kids (and even my wife!) were enthralled with the first views of the moon that we obtained. The second night, although cloud was again an issue, I managed to set the scope up fully. the set up was easy, following the instructions, although it is sometimes tricky to remember that the arrow buttons are only used for controlling the movements of the scope from the handset and not navigating the menus, however they were largely self-explanatory and made the initial setup easy. I would advise using a custom site for alignment using a smartphone with GPS (almost ubiquitous these days) to obtain the precise location, just remember you will need the location in degrees, minute and seconds of arc, rather than decimal. This is quite easy to find with a quick internet search on a smartphone however. Exact times from a reliable source, such as a synced smartphone is also required, along with your time zone. Once these are in you can choose to align the scope using any three bright stars or other celestial objects (moon or planets), simply align the object in the finder scope, then centralise in the eyepiece and align using the handset. This was done in minimal time, even with poor visibility due to cloud and the computer accurately aligned the scope at the first attempt with no need for firmware updates or similar for the handset. Following alignment I used the sky tour to find appropriate objects and after checking that the sky model was correct (it was able to find the moon without difficulty in the solar system mode) I used the handset to move to Andromeda, which was visible as a fuzzy patch, despite poor visibility and quite bad light pollution. The tracking seems to work fairly well and will keep an object in view for a significant amount of time (quite sufficient for real-time observing using the eyepiece), but did exhibit some element of drift, so would not be suitable for deep sky astrophotography, but this is to be expected with an alt-azimuth mount, as compared to an equatorial setup. Unfortunately, the sky conditions deteriorated further preventing any more testing on other objects, but overall this telescope is easy to set up and provides a quick means of finding astronomical objects. As a starter scope at a reasonable price it would seem that it is difficult to beat. In terms of power, I did buy the external battery pack which allows extended observing and this seems to be the best way to power the scope as while using the internal 8xAA batteries would avoid any problems with cord entanglement, the lack of battery life may limit it without a substantial supply. Cord length and wrapping would be even more of an issue with a mains powered supply and could be problematic for anything more than a small distance outside. The scope does need power to operate though and cannot really be operated without it, which is definitely a downside if you were wanting the use it in an unpowered alt-azimuth mode. Overall, this seems to provide a good observing experience for the aperture and price and is highly recommended for a beginner. Obviously, you could get a larger aperture without the goto function for the same price, but this really wins on convenience. I look forward to may happy nights observing with my kids in the near future.

### ⭐⭐⭐⭐⭐ Brilliant little scope
*by A***L on 14 February 2014*

This telescope is my first, and a great way to get into astronomy, have had it a couple of months now. And it is so much fun, it was so simple to get going, I had it up and running in ten mins on my first go!!,the planets and moon through this are great, Jupiter is my fave, looks like a white pea with a couple of reddish lines going through it, and 4to7little dots next to it(moons), don't sound great but remember this is a small low priced telescope(great value for the money),you are not gonna see loads with this. But, it will teach you so much about the night sky,and it's really portable, i carry it in a big bag, and it takes only ten minutes to get it out and running, the goto is not 100percent accurate, but it points you in the right direction, and your own brain works out the rest( makes you feel useful), the eye pieces you get are quite good, get a Barlow and it's all you need, I bought some really expensive ones, but on the intention of a much bigger scope in a year or 2, they don't make a great deal of difference with this low powered scope, it really is a great learning tool tho, and I'll never get rid of it, as it will great for my 2 year old in a few years time .And highly recommend it as a beginners only telescope

## Frequently Bought Together

- Celestron - NexStar 90SLT Computerized Telescope - Compact and Portable - Maksutov-Cassegrain Optical Design - SkyAlign Technology - Computerized Hand Control - 90mm Aperture
- Celestron – NexYZ – 3–Axis Universal Smartphone Adapter for Telescope – Digiscoping Smartphone Adapter – Capture Images and Video Through Your Telescope or Spotting Scope
- Celestron - SkyPortal WiFi Module - Control Your Celestron Computerized Telescope via Smartphone - Telescope Wi-Fi Accessory

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*Store origin: NL*
*Last updated: 2026-03-01*