The Astronomical Unit


This page last modified 2018 November 02

A PDF version of this page can be downloaded here.

Choosing a First Astronomical Telescope

Kid and Telescope

Image: Kid and Telescope by Gerry Thomasen (CC BY 2.0)

Reader comments from 2017:
"A no-nonsense article"
"Excellent stuff! Some damned good advice here!"

For choosing a basic set of eyepieces, click here (opens in a new tab).
For choosing binoculars for astronomy, click here (opens in a new tab).


1. Introduction
2. Factors to Consider
3. Who Makes Them?
4. Telescope and Mount Types
5. Which Telescope (Best Buys)
6. Sources of Further Information
Affiliation Disclosure

1. Introduction

The recent revival of interest in amateur astronomy has led to a bewildering variety of telescopes on the market, and an increasing number of retailers, some of which are primarily interested in taking your money. It is easy for a newcomer to be bamboozled by the advertising hype and to spend money upon something that begs to be replaced after a very short time. It is best to purchase from a knowledgeable and reputable retailer. If a retailer seems to be offering goods very much cheaper than others, check that these are not "grey" imports. If they are, they are unlikely to have a UK warranty. Grey importers also take business away from reputable retailers; you may wish to consider whether this is something you want to support.

There is no such thing as a "perfect starter scope". The one that is right for you depends upon a number of considerations. For this reason, it would be a good idea to try things out before you buy. Many Astronomical Societies hold field meetings (aka observing evenings) where newcomers can try out different kit and get advice from experienced astronomers. At the very least, you should see if you can find a review of your intended purchase.

Caveat. What follows, especially the BEST BUY, recommendations, represents my opinions, which are formed by my own prejudices. Briefly, these are that decent optics and accessories on a sturdy mount are worth a great deal more than attractive computerised kit that is under-mounted and comes with bottom-of-the-range accessories. Other people have different opinions. Solicit them, either passively from reviews, or actively from experienced amateur astronomers, either in person or on internet forums and mailing lists The prices (and therefore relative prices of various options) are those in the UK .

Back to Top of Page

2. Factors to Consider

I give more detailed advice on this in my book AstroFAQs

3. Who Makes Them?

A frequent question is "What is a good brand name?" Frequently a telescope from a manufacturer is branded by different companies, but is essentially the same telescope in different "livery"; in such circumstances, one cannot recommend one brand over another. For example, the Orion Short Tube 80 is the same telescope, manufactured by the Chinese company Synta, as the Celestron Firstscope 80 EQ WA, the Helios StarTravel 80 and the Skywatcher StarTravel 80. Nowadays, almost all of the telescopes that are intended beginners are of Far Eastern — usually Chinese or Taiwanese — manufacture, including those from the US "big three" (Celestron, Meade and Orion) and those (e.g. Tasco, Bushnell) that are usually distributed through non-specialist retailers like department stores and camera shops. The quality of these telescopes is variable; within the same model there is often a range of quality, hence it is impossible to categorise such telescopes as "good" or "bad". However, in the last few years improvements in the manufacturing processes have resulted in a general increase in quality and consistency and these instruments can offer excellent value for money.

Back to Top of Page

4. Telescope and Mount Types


Skywatcher Evostar 120

These are what most people immediately call to mind when they hear the word "telescope"; they have lenses at the front. Good refractors give superb images, but they are expensive to make, especially in large sizes, because they use exotic glass. They need very little maintenance. They are usually preferred for observing the planets and Moon.


Skywatcher Explorer 150P

Newtonians can be made inexpensively because they have only two optical surfaces and do not need special glass. They give you the most aperture for your expenditure, and so are preferred for visual observation of the deep sky. However, they have a tendency to go out of alignment (lose collimation), so you will need to learn how to collimate them.


Celestron C6

"Cats" are good multi-purpose instruments. The folded light-path makes them more compact than Newtonians or refractors. They are more expensive than equivalent-sized Newtonian, but less expensive than the equivalent-sized refractor. Like refractors, they need little maintenance.

Altazimuth (AZ) Mounts

Celestron Astromaster

"Altaz" mounts are the simplest mounts; they are therefore the least expensive. They move up and down (altitude), and side-to side (azimuth). To track an object, both motions must be used. They suffer from image rotation, so they are difficult to use for long-exposure astro-imaging.

Dobsonian Mounts

Skywatcher Skyliner 200P Dobsonian

"Dobs" are simple altazimuth mounts that are held together by gravity. They are usually used to mount Newtonian reflectors. "Dobs" make excellent first telescopes, owing to their simplicity and the fact that they give you the most aperture for your expenditure.

Equatorial Mounts

Skywatcher EQ3-2 Deluxe

Equatorial mounts can track an object using only one motion and so are the preferred option for lunar and planetary observations, where high magnifications are typical. They need to be accurately aligned to do this; this takes time unless it is permanently installed in an observatory. They do not suffer from image rotation, so are the simplest mount for long-exposure astro-imaging.

Back to Top of Page

5. Which Telescope?

This makes no pretence to be a definitive list of good telescopes, but all equipment on it is stuff that I have used and, in some cases, still own. It represents my opinion of good value-for-money telescopes in each price range. There are almost certainly good buys that I have omitted owing to my ignorance of them. With new models being introduced all the time and with prices fluctuating, it is inevitable that this list will become out of date in some respects — so check the date at the top of the page.

First, there are some general "rules":

Under £100

Skywatcher Heritage 100P

Skywatcher Heritage 100

This is a table-top mounted Dobsonian. It is very portable and easy to set up. However, it does suffer from an awkward finder position unless you are very short (which makes it more suitable for children) and, of course, requires a sturdy table.

BEST BUY for a child's first telescope under £100.

Skywatcher StarTravel-80

Skywatcher StarTravel 80

An extremely portable scope that is excellent value for money. It excels at observation of open clusters and is acceptably good for the Moon and bright planets. If you have a decent photographic tripod, it is worth getting this telescope as the OTA (optical tube assembly) only option. If you upgrade later, it still makes a useful travel scope or guidescope for astrophotography.

In this guise, it is the BEST BUY for under £100.

Second hand. (see above)

Binoculars are often a better bet in this price range. My guide to choosing a first binocular for astronomy is here.

There is a lot of rubbish in this price range. Most of it is on insubstantial mounts and comes with atrocious accessories. If this is your budget and you are tempted by something else, check out the tutorial on evaluating telescopes before you buy. If you already have one, check out my tutorial on upgrading them.

£100 - £200

Skywatcher SkyMax 90, unmounted

Skywatcher SkyMax 90

Extremely good for the Moon, planets and double stars. Worth considering only if you already have a sturdy photographic tripod or other suitable mount to put it on.

Skywatcher Heritage-130p Flextube

Skywatcher Heritage 130P Flextube

Possibly the nearest thing to an ideal beginner telescope. It has a decent light grasp, and a clever design that makes it very compact and, therefore, portable. It is quick and easy to set up, but requires a sturdy table or similar support.

It has a standard Vixen/Skywatcher-type dovetail bar, so you can upgrade it with any mount that has the Vixen/Skywatcher saddle (e.g. AZ4, AZ5, or Star Discovery GOTO).

(Don’t be tempted to put it on an equatorial mount unless you are in training as a contortionist; the eyepiece can end up in remarkably awkward positions!)

BEST BUY for under £150.

£200 - £300

Skywatcher Evostar 90 (EQ3-2)

Skywatcher Evostar 90 (EQ3-2)

Good optics on a mount that is suitable for the telescope. This is possibly the best beginner option for a lunar and planetary telescope. The mount can be upgraded with motors and computerised GOTO. BEST BUY at under £250

Skywatcher Skyliner 200P Dobsonian

Skywatcher Skyliner 200P Dobsonian

Basic but good; has the greatest aperture in this price range. If you're sure this hobby is for you, this may be the best option for a basic all-round scope that will meet your needs for several years, especially if your interest is the Deep Sky. You should probably handle one before buying: they are bulky and quite heavy.

BEST BUY at under £300

£300 - £450

Skywatcher Explorer 130P SynScan AZ GOTO

Skywatcher Explorer 130P SynScan AZ GOTO

Probably the cheapest computerised telescope worth getting. Reasonably good mount, and a decent aperture to get you started.

Skywatcher Skymax 127 EQ3-2

Skywatcher Skymax 127 EQ3-2

This is a very nice telescope and the mount is good for visual observation. The mount can be upgraded with motors and computerised GOTO.

BEST BUY at under £450

Over £450

Possibly not a wise amount to spend on a "starter" telescope unless you have tried it out and are convinced that you want it. At this price, it is often best to choose the telescope, the mount, the eyepieces and the other accessories separately, in order to meet your specific requirements. If this is your situation, you probably don’t need this guide anyway!

Back to Top of Page

6. Sources and Further Information

Telescope Retailers

The following are retailers of "starter scopes" from whom I have purchased astronomical equipment within the last few years, and from whom I would do so again, i.e. those whom I can recommend from my recent personal experience. The absence of a retailer from this list does not imply that it is not reputable; the absence may be due to my not having purchased anything from that retailer.


There are reviews of telescopes and other astro kit at:

Internet Forums and Mailing Lists

The following are useful sources of information on intended purchases. Remember to get more than one opinion — there is a lot of information and opinion on the internet, and some of it is rubbish! However, an advantage of Usenet newsgroups and Internet mailing lists is that there is an element of peer-review in that fallacious statements and unsupportable opinions will be challenged — for this reason it is advisable to verify the information you receive in any private replies that people send you.

Back to Top of Page

Stephen Tonkin is an affiliate of First Light Optics which provides a means for sites to earn commission by advertising and linking to

I recognise that, when something is being sold on commission, the buyer is justified in being wary of the seller's descriptions. However, I have, over many years, developed a reputation of which I am very jealous. I will not, therefore, compromise my integrity and risk damaging my reputation by knowingly describing something inaccurately.

For this reason, most of what I recommend on this page is something that I have used; in a few cases it may have been used by somebody whose opinions I trust. Some of this is equipment I last used several years ago, before I considered developing this guide. It is also possible that what I am suggesting may be based on a superseded model, so my opinion may be out of date.

I am pleased to have become an affiliate of First Light Optics (FLO) (which is at least as jealous of its reputation as I am of mine), and which will back up any sales with its peerless after-sales service.

In the two decades since I started The Astronomical Unit, several retailers have approached me about advertising their wares on my site; I have always declined because of the risk of being perceived to be "in a retailer's pocket". However, I am satisfied that this arrangement does not carry that risk: FLO has not merely agreed, but has actively encouraged me to publish a negative review if that is my opinion (simply put, false-positive reviews lead to a lot of equipment returns, which is expensive for retailers).