Gskyer is known to produce high-quality telescopes. The German company, which has been in operation for more than 20 years, designed the Gskyer 600x90mm AZ Telescope, for entry-level astronomers. This is one of the high-end beginner telescopes, offering great optical power and a couple of extras such as image erect prism for ease of use.
The optical tube of this telescope features an aluminum alloy, making it highly durable. The telescope is easy to use thanks to the tube ring that enhances mounting. An altazimuth mount and a stainless steel tripod make it comfortable to use while enhancing focus.
Though this is a beginner telescope, you can use it to observe the moon, stars, meteors, and planets. The telescope offers great clarity, allowing you to see the surface of the moon, the rings of Saturn and the moons of Jupiter. You can also use it terrestrially to watch birds, wildlife, and insects.
This article assesses the performance and quality of the Gskyer 600x90mm AZ Telescope.
What is Gskyer 600x90mm AZ Telescope?
The Gskyer 600x90mm AZ Telescope is a complete set designed to offer beginners with a great viewing experience over a long period. It is designed with a mounting knob and a safety screw on its dovetail bracket. This allows you to attach the mount and the tripod for comfortable use and ease of focus.
To enhance the quality and clarity of the images, the unit sports coated anti-reflection blue-film components. This ensures there is no internal reflection, which might distort the images produced. The package is delivered with three eyepieces each for a different viewing situation. This makes the unit adaptable. Granted, you can use the unit to observe the moon and the stars and change the eyepiece to bring distant wildlife closer.
This is a high power astronomical telescope, giving you a wide field of view. It is easy to use. Better yet, you can upgrade this telescope for professional use.
Product Information
| Dimensions | Weight | Batteries | Aperture | Focal Length | Software |
| 38 by 12 by 8 inches | 18 pounds | – | 90mm | 600mm | – |
Pros & Cons of Using the Gskyer 600x90mm AZ Telescope
Pros
- Solid construction for durability
- Extendable stainless steel tripod is adaptable and long lasting
- Offered with all necessary accessories
- Easy to set up thanks to the optical tube ring
- Offered with a manual and maps to get you started
- Can be used to view terrestrial and celestial objects thanks to the image-erect prism
- Wide aperture and long focal length for clear and crisp images
- Ideal for beginners as well as experienced users
- Multi-coated anti-refection blue-film reduces image distortion
Cons
- Relatively high price
- The tube ring makes it relatively longer to set up this telescope
- No Software for image enhancement and photography
Where to Find Gskyer 600x90mm AZ Telescope
Gyskyer telescopes are available on the manufacturer’s website where you can access discounts and warranties. Even better, the companies sell their telescopes on Amazon where you can also access discounts and even get free shipping. You can purchase new Gskyer 600x90mm AZ Telescope online for around $245 – $250. A used telescope goes for $195 – $200. Used telescopes are indistinguishable from new ones. Ergo, if you are shopping on a budget, but still need a quality unit, used telescopes are great.
You can also buy this telescope on other online stores such as Walmart and eBay.
Telescope Performance
The Gskyer 600x90mm AZ Telescope features a 90mm aperture and a 600mm focal length. These features combined with three eyepieces offer great quality images. Eyepiece 1 is 25mm and offers 24x magnification. Eyepiece 2 is 10mm and offers up to 60x magnification while eyepiece 3 is 5mm and offers up to 120x magnification. This brings the maximum magnification to 360x. When used terrestrially, images produced are crystal clear. This is the same when used to view celestial objects.
To enhance focus, the telescope is offered with a 6×30 Finderscope. This allows you to point and observe, but delivers inverted images. To correct images, the unit is accompanied by a 48-degree erecting prism.
When mounted right, you can easily focus on objects for clarity. A 3x Barlow lens is offered to treble the magnification of each eyepiece for an even better view. The lenses sport an anti-reflection blue-film to reduce image distortion.
While this unit delivers quality images, it is not offered with software to integrate with computer of mobile device. Granted, you cannot use it for photography.
Extra Info
The Gskyer 600x90mm AZ Telescope has a focal ratio of f/6.7 with a resolution of ≤2.8 and an angular field of view of 1 degree and 36 minutes. It features a hook dovetail plate connection, making it sturdy during use. It is a telescope for beginner astronomers who need high-quality images.
Maintenance Advice
You should use this telescope in a place with less dust and dirt. This minimizes cleaning, which might add scratches on your lenses. When not in use, the telescope needs to be stored in a moisture free area preferably in a hard case.
Dust should be blown off from the unit with an air can while smudge and dirt should be wiped with a lens cloth and isopropyl alcohol.
Accessories
You will be offered all needed accessories. For starters, you are offered a user manual so that you can set the unit with ease. Accessories include:
- 1.27-inch Tripod
- Alt-azimuth mount
- Three eyepieces
- 6×30 Finderscope
- 3x Barlow lens
- 48-degree erecting prism
You can buy extra eyepieces, a cleaning camel’s brush or soft lens cloth and a carrying case if you need to use the telescope on the go.
Warranty and Guarantee Information
You are offered one-year warranty on purchase of this telescope. Even better, the manufacturer accepts back telescopes that do not satisfy customers including those with manufacturer defects. Gyskyer offers great customer support. Those who have used this unit love the solid and sturdy construction.
Our Recommendation
Overall, the Gskyer 600x90mm AZ Telescope offers you value for money. While it is a beginner telescope, it allows you to see clear images, and when upgraded, you can use the unit professionally. It mirrors other Gskyer telescopes, which feature a strong and durable aluminum construction.
What do you think about this telescope? Let us know.
Last update on 2023-03-27 at 23:52 / Affiliate links / Images from Amazon Product Advertising API
Gskyer is a company out of China that copied German technology and design to build their telescopes. The company has since gone out of business and has been liquidating their product through Amazon. The telescopes are priced accordingly for entry-level chinese-made product. The accessories that come with the telescopes such as the eye pieces, barlow etc are of low in quality, however, work fine for a beginner or novice. The grease that has been used on the alt Azimuth mount feels more like a sticky glue and I had to disassemble the mount, clean all the grease out, and apply a good quality grease in order for the mount to turn and move smoothly. There were also several burs that I had to polish out where pieces went together on the mount.
Can we buy separate parts to make our 7400 more powerful
Can you explain your definitions of ‘high-end” and “high-quality”? From my extensive experience with amateur telescopes, having worked with a very large number of them, I find this brand and this telescope to be very low-end.
One major piece of information has been left out: is this an achromatic doublet or an apochromatic triplet refractor? If you don’t know those terms, you have no business reviewing a telescope.
In the review you also state the following: “The Gskyer 600x90mm AZ Telescope has a focal ratio of f/6.7 with a resolution of ≤2.8 and an angular field of view of 1 degree and 36 minutes”
What units are you using for resolution? 2.8 what? I calculate the diffraction limit for light at 400nm as about 1.12 arcseconds and 1.96 arcseconds for light at 700nm. The Dawes’ Limit calculates to 1.29 arcseconds, and the Rayleigh Criterion calculates to 1.53 arcseconds. Where is 2.8 anything coming from?
As for field of view, this is entirely dependent upon the focal length and apparent field of view of the eyepiece being used. I don’t see any specs here or anywhere on the AFOV of the eyepieces. I’ll generously assume they’re about 50°. If this is the case, the 25 mm eyepiece offers a true field of view over 2°.
As for magnification, you state: “This brings the maximum magnification to 360x. When used terrestrially, images produced are crystal clear. This is the same when used to view celestial objects.”
The general rule of thumb used by most amateur astronomers is that the maximum usable magnification of any telescope under ideal conditions is about 50x per inch or 2x per millimeter of aperture. That puts this telescope’s maximum usable magnification around 180x, and that’s under ideal conditions. A more realistic expectation is about 1/2 to 2/3 of that, depending on the telescope. Unless you have a very distorted definition of crystal clear, at 360x, nothing through this telescope will be crystal clear. If that’s your contention, I would call it a bald-faced lie.
All in all, I strongly question your credentials for reviewing telescopes. This is the type of telescope that those of us with experience in amateur astronomy strongly recommend people avoid at all costs.
Telescope, Astronomy Refractor Telescopes, 70mm Apeture Scope 700mm AZ Mount for Astronomy Beginners with Tripod & Smartphone Adapter & Wireless Camera Remote, the device is not working properly . please request a technical support or a refund.