Best Advanced Telescopes 2026: Buying Guide for Seasoned Amateurs

By Alexander Merz · Updated on 27 October 2026 · Details checked on 13 November 2026

This telescope recommendation for advanced observers is aimed at amateur astronomers with some basic knowledge and sorts the instruments by purpose: demanding visual observing, observing and photography combined, pure astrophotography and specialist telescopes. If you want to know where the top class ends, you will find the classification under Professional telescope.

If you only want to observe visually, you need a different telescope from someone who sooner or later also wants to get into astrophotography.

There is no telescope that meets every requirement perfectly. This guide is meant as inspiration for your decision.

The first question to answer is whether the telescope will be used only visually or for astrophotography as well.

For both uses there are all-round telescopes and specialists. If you choose the specialists, you cannot avoid buying two separate optical tube assemblies (OTA).

Telescope for demanding visual observing

Optics for visual observing

If you only want to observe visually, you should maximise the aperture. Reflecting telescopes offer the best value for the largest possible aperture. The largest possible aperture is what matters for visual observing.

The larger the aperture, the more detail can be resolved. The higher the resolving power, the higher the maximum useful magnification. The larger the aperture, the more light is gathered – so faint objects such as many galaxies and nebulae also show up well.

Many impressive deep-sky objects do not need particularly high magnification, but they do need a lot of light-gathering power.

With the right accessories, the Moon and planets can also be observed well at high magnification.

Mount for visual observing

Large reflecting telescopes allow a high maximum useful magnification, which makes automatic tracking worthwhile. With automatic tracking, motors keep an aligned telescope centred on the target and compensate for the Earth’s rotation as the night goes on.

That lets you concentrate on observing, because you no longer have to “nudge” the Dobsonian after the target.

Portability

If you live in a light-polluted area, you should also pay attention to how portable the instrument is. Stray light can spoil the observing experience and make it necessary to observe from darker sites.

Telescope recommendation for experienced visual astronomers

Dobsonian telescope

A Dobsonian telescope offers the best value when you look at the size of the aperture. Dobsonian telescopes are Newtonian reflectors on a simple mounting box (rocker box).

Choosing a rocker box with tracking makes observing considerably more comfortable.

A tracked rocker box is still not suitable for astrophotography, however, because it remains an alt-azimuth mount.

With the long exposures needed for deep-sky objects, a tracking rocker box would cause field rotation, visible as star trails that become distorted towards the edge of the image. For visual observing this problem plays no role.

If you live in a light-polluted area or want to change your observing site, a truss-tube Dobsonian serves you well. The truss poles connect the secondary mirror very rigidly to the mirror box and hold the collimation for a long time despite regular assembly and disassembly.

Useful accessories

Eyepiece

As the telescope gets more capable, high-quality eyepieces become worthwhile too. With fast telescopes such as Dobsonians in particular, high-quality eyepieces make a noticeable difference.

Simple eyepieces tend to show strongly distorted images at the edge of the field of view, which can spoil the view of large objects.

High-quality eyepieces, such as TeleVue eyepieces, stand out for the quality and workmanship of their components and deliver a distortion-free, colour-pure field of view.

For comfortable observing, an eye relief of 15–20 mm and a field of view of about 65° or more are recommended. Generous eye relief is a must for glasses wearers.

Wide-angle eyepieces with a large field of view are especially worthwhile for telescopes with high light-gathering power. Extended deep-sky objects in particular look impressive through a 2-inch eyepiece with a longer focal length.

If you want to observe seriously, stay away from zoom eyepieces, as they usually have a very narrow field of view. A matching set of fixed-focal-length eyepieces is the better buy.

Which focal lengths such a set should cover for your instrument is calculated by the eyepiece finder: choose your telescope and get three eyepieces with magnification and exit pupil.

Barlow lens

A Barlow lens extends the focal length of the telescope. Extending the focal length raises the telescope’s magnification by a factor of two to three, depending on the lens.

Because the Barlow lens adds further lenses to the light path, its quality is of the utmost importance for an optimal observing experience.

With a large-aperture, fast reflector such as a Dobsonian, higher useful magnifications are possible – but because of the telescope’s relatively short focal length they require eyepieces with very short focal lengths.

Short-focal-length eyepieces usually have very uncomfortable eye relief, so extending the focal length with a Barlow lens lets you use medium-focal-length eyepieces with comfortable eye relief.

This way a reflector whose strength lies mainly in deep-sky observing can also be used for lunar detail and the planets.

Binocular viewer

A very interesting addition to your telescope accessories for visual observing is the binocular viewer.

A binocular viewer lets you observe with both eyes, which gives a very three-dimensional and impressive observing experience.

You can find more information on our page: Binocular viewer.

If the high cost makes you unsure, ask your nearest astronomy club or public observatory whether you can look through a binocular viewer. The impressive two-eyed view has won many people over on the spot.

Telescope for observing and photography

Mount for astrophotography

If you choose a telescope for astrophotography, you above all need a high-quality mount that can carry enough weight.

Mounts suitable for astrophotography are primarily equatorial mounts, which – once polar-aligned – keep the target in the centre of the frame and follow it automatically.

Effects such as field rotation do not occur. With a mount like this you can also take long-exposure images of deep-sky objects.

See also: guide article Astrophotography

Optics for astrophotography

When choosing the telescope, catadioptric systems such as the Schmidt-Cassegrain are a good compromise between aperture and focal length. They offer an all-round solution for both demanding visual observing and astrophotography.

To use Schmidt-Cassegrain telescopes as versatilely as possible, however, you also need quite a few accessories for each situation. These include Barlow lenses, focal reducers and more.

Telescope recommendation: astrophotography and observing (all-round)

If you want astrophotos without learning about mounts, tracking and image processing yourself, there has been a serious shortcut since 2026: the Seestar S50 Pro photographs galaxies and nebulae fully automatically in 4K – as a second instrument next to your visual telescope or as a stand-alone entry into deep-sky photography.

Astrophotos without a mount or learning curve: ZWO Seestar S50 Pro Smart Telescope

The direct successor to the Seestar S50: a 50/260 apochromatic quadruplet, two cameras and a built-in dual-band filter that pulls nebulae out of a city sky.

Price: € 999

View at Astroshop* →

Newtonian on an equatorial mount: the proven photo starter

For getting into astrophotography with classic equipment, a 150 mm Newtonian on an equatorial mount has for years been the most-bought route via our recommendations: suitable for photography, trackable, motorisable later – at a third of the price of a C8 set. Visually it shows all Messier objects and fine planetary detail.

The best-selling photo starter: Omegon Advanced Telescope 150/750 EQ-320

A 150 mm Newtonian on an equatorial mount: the classic route if you want to track the sky and photograph later on.

Price: € 499

View at Astroshop* →

If you would rather leave the image processing to the instrument, the Vaonis Vespera II*Vaonis Vespera II* ($1,590.00€ 1,590) is the smart step above the Seestar: a 50 mm apochromat, mosaic mode and finished images on your tablet.

Schmidt-Cassegrain telescope

A Schmidt-Cassegrain telescope (SCT) is a catadioptric (mirror-lens) telescope. This design combines a large aperture and a long focal length thanks to a folded light path.

This allows high magnifications with medium-focal-length eyepieces and comfortable eye relief. The large aperture gathers a lot of light and so allows faint objects to be observed.

Their short, compact design keeps SCTs portable. With the right accessories, modern SCTs offer a versatile basis for astrophotography too. Which model – from the NexStar 6 SE to the EdgeHD 1100 – is worth it for whom is explained in our Schmidt-Cassegrain buying guide. 

With a reducer, the focal ratio – usually f/10 – can be reduced, with a Barlow lens it can be increased considerably, and using a camera at prime focus (possible with modern SCTs such as the Celestron EdgeHD and newer series of the classic SCT) turns an SCT into an astrophotographic Schmidt camera with an extremely fast focal ratio of about f/2.

The accessories needed for this require a larger investment. Modern SCTs have built-in correcting elements that compensate for both spherical aberration and field curvature. An SCT is a good telescope recommendation for an expandable all-round system (observing and astrophotography).

Accessories for astrophotography

You can find more on this topic under Astrophotography.

Specialist telescopes

Telescope recommendation for the Moon and planets

If you want to observe planets, the Moon and deep-sky objects optimally, however, there is no way around buying two telescopes. For the Moon and planets you need the highest possible magnification and high-contrast images. Long-focal-length lens systems deliver this, such as a classic refractor, or catadioptric telescopes such as the Maksutov. 

Refractors deliver particularly high-contrast images because there is no secondary mirror in the light path. To achieve a large aperture, however, they need large and increasingly expensive lenses that image without noticeable colour error. For this, lenses made of different types of glass are cemented together.

Which aperture you really need for the Cassini Division, the Great Red Spot or the polar cap of Mars – and which instruments deliver that from $400€400 – is covered in detail in the guide Which telescope for planets?

With a catadioptric telescope it is easier to combine a large aperture with a long focal length. The obstruction caused by the secondary mirror is small in a Maksutov compared with an SCT, which makes this compact telescope a good observer of planets and the Moon. Spherical and chromatic aberration are practically imperceptible.

Telescope recommendation for deep sky

If you want to observe or photograph deep-sky objects as well as possible, you need the largest possible aperture to collect a lot of light. Newtonian telescopes with a fast focal ratio have the advantage here. Short-focal-length refractors are an alternative.

If a sturdy equatorial mount is already in place, the most affordable deep-sky basis is a bare Newtonian OTA. The Sky-Watcher Explorer 150P (N 150/750) OTA* offers 6 inches of aperture at f/5 – short enough for wide fields on nebulae and galaxies, large enough to show M42 in winter or the Ring Nebula in summer as real objects rather than grey wisps.

Sky-Watcher Explorer 150P (N 150/750) OTA

A 150 mm Newtonian OTA without a mount – the classic budget route into deep-sky observing when a solid equatorial mount is already in place. Short f/5 tube, plenty of aperture for the money, superb on nebulae and galaxies.

Price: € 285

View at Astroshop* →

Mount for deep-sky telescopes

If you decide on two specialist telescopes, choose the mount so that it can carry both telescopes well.

You should also bear in mind that you may want to do astrophotography later. For that, the mount’s payload should have 50% headroom compared with the visual setup.

A mount with tracking is especially important in this case, because without it astrophotography – of deep-sky objects in particular – is not possible. Here too, equatorial mounts have proven themselves.

Beginner-friendly smart telescope: impressive images at the push of a button

A smart telescope is a sophisticated, automated instrument that uses the latest technology to make observing the night sky effortless. With a built-in camera, automatic alignment and an intuitive smartphone app, it captures images without time-consuming post-processing.

The results are breathtaking and far more detailed than what a conventional telescope shows to the naked eye – especially with faint objects such as nebulae or galaxies.

My recommendation: the Celestron Smart Telescope S 152/335*. It offers excellent value for money and impressive features, and is even suitable for semi-professional astrophotography.

Which is the best telescope? A comparison instead of a test winner

There is no single best telescope – only the best telescope for your purpose and budget. The table summarises the recommendations in this guide.

If you mainly want to produce impressive images with maximum convenience, you will find the right instruments in our smart telescope comparison.

Telescope tests: what does Stiftung Warentest say?

Short answer: nothing. Stiftung Warentest, Germany’s best-known consumer testing organisation, has never tested astronomical telescopes – so there is no official “test winner”. Where shops or portals advertise a “telescope test winner”, there is no independent laboratory test behind it.

More reliable than a seal are the criteria in this guide: aperture, mount and mechanics decide the observing experience. For beginners we have compared the most important classes of instrument in the buying guide for beginner telescopes.

Best telescope under 1,000 euros

The honest answer for advanced observers: an 8-inch Dobsonian. The Apertura AD8 Dobsonian 8" Telescope with Accessories*Omegon Advanced X N 203/1200 Dobsonian* delivers, for $649.95€ 499, more sky per dollareuro than any other telescope in this class – 200 mm of aperture shows all Messier objects and fine planetary detail.

If you have more budget left, the step up to the 12-inch scope from the Dobsonian table above is the next sensible move. We advise against complete packages with a wobbly mount and lots of bundled accessories.

All eight instruments in this price class, sorted by use – from the 10-inch Dobsonian via GoTo to the smart telescope – are covered in the guide Best telescope under $1,0001,000 euros.

A direct comparison of all recommendations across all price classes can be found in the best telescopes overview.