Sky Watcher EQ6-R Pro Review

The Skywatcher EQ6-R-Pro is a Go-to German Equatorial mount which finds itself in something of a price and weight-bearing sweetspot. It’s relatively affordable in a hobby that will never be cheap, but expensive enough an investment that you won’t want to replace it for many years.

It’s a well-known true-ism in astrophotography circles that you should always buy a better mount than you think you will need. You will get better results from cheap OTA on an excellent mount, than from amazing optics sitting on a cheap wobbly mount. 

The EQ6-R then is a popular mount at a popular price-point which will support the vast majority of kit that you may want to load it with, from small refractors to large Smidt Cassegrains with camera equipment on top.

But what is it like to live with and use, both for photographic and visual use? I spent time going through as many functions and scenarios as I could to give you a better idea of whether this is the mount for you. And a few small niggles aside, I think it may well be.

Sky Watcher EQ6-R Pro
8/10Our Score

FEATURES: 44lbs max load bearing, Equatorial GoTo mount with built-in USB PC control, and Polar-alignment scope

BENEFITS

  • Go-to mount with Synscan handset included - over 42,000 objects can be found and locked onto in seconds
  • Built-in illuminated polar-alignment scope. Offers the flexibility to polar align anywhere without the need for a computer.
  • Synchronous belt-drive. Reduces backlash and gives more stable tracking
  • Control the mount from your computer via the RS232 port. The appeal of standing next to your telescope for hours in the dead of a cold night can quickly wear off. So disconnect the hand controller and control everything from the comfort of the house (or shed!)

What We Like About the EQ-6R

  • Heavy duty powerful mount that can support a very wide range of telescopes and other equipment with its 20kg payload capacity for astrophotography
  • Integrated carry handle and retractable counterweight bar- whilst I would never describe this as a portable mount, these features make life much easier when you do have to move the mount.
  • Supplied steel tripod is sturdy enough to stay-put in permanent setups. All but the most determined of passing toe kicks, will not budge this mount on its tripod.
  • Quiet stepper motors that are only audible at full speed, and even then your neighbors are unlikely to hear anything at all.

What We Don’t Like

  • The generally good polar alignment scope which is marred by a cumbersome altitude adjustment system. Maybe it was just my copy or my technique but I often struggled to engage with the thread to adjust the altitude smoothly.
  • Only supplied with 2x 5kg counterweights. On the one-hand Skywatcher boasts about the EQ-6-r’s generous payload capacity, on the other, they leave owners to buy more counterweights if they want to utilize more of that capacity!
  • I really don’t like the small, smooth plastic dovetail saddle securing knobs. I found myself needing to wear rubber gloves to tighten/loosen them in cold weather. A rubberised or more rugged ‘grippy’ shaped finish would be better. (3rd party upgrades are available).
Sky Watcher EQ6-R Pro mount in action
The mount in action

The EQ6-R Compares to other Products

If you don’t think the EQ6-R is quite what you’re after, you may want to consider similar products.

iOptron CEM40 Center Balanced Equatorial GoTo Mount. A lighter-weight option which addresses some of the weaknesses of the EQ6r, but at a higher price. Somehow this mount manages to pull off the trick of a similar payload capacity (40lb / 18kg) whilst weighing only 15.8lb / 7.2kg. Included in the package is a similar handset controller but the choice of tripod is left up to you, at an additional cost.

There is a very impressive roster of features including a far simpler and more effective altitude control and a built-in ‘I-polar’ electronic polar alignment scope which works even when polaris is obscured by clouds ! Other convenience features such as extra large clutch levers and integrated cable management system, make this mount a serious competitor to the EQ6-R

Sky-Watcher EQ5 Pro Go-to Astronomy Mount. If portability is more important to you than rock-solid immovability, then this may be a good option which provides many of its bigger brother’s benefits, without the weight. Of course this does come at the cost of payload capacity which tops out at only 6.5kg for photo and 9kg for visual. 

You still get accurate tracking, built-in polar alignment scope the synscan hand controller, slew rates from 0.5x to 800x and full ascom compatibility for PC control and a tripod is also included. Overall weight is 11.1kg excluding counterweights.

Weight Capacity

Photographic; 44lbs / 20kg

The weight capacity for the EQ6-r of 44lb/20kg is for photographic use. I’ve seen it stated that you can get away with a bit more for visual use but I wouldn’t risk overloading the motors and shortening their life. Received wisdom is that for best accuracy you should aim for half or two thirds (the wisdom varies!) payload capacity. 

But I do not see why you cannot use anything up to and including 20kg. You’ll soon know (as I found out) if you’re overdoing things.

The mount itself is very heavy, especially sitting atop the 7.5kg 2inch steel tripod. Unless you work-out daily, you will at the very least want to remove the counterweights before moving the mount. By the time you add on a payload of up to 20kg things get seriously weighty.

All this is of course very good news for an astrophotography setup – After a painstaking polar alignment you really do not want anything to budge when you stub your toe on the tripod or the family pet brushes past during an imaging session. 

It’s less good news if you require some degree of portability or you like to take your imaging gear away to dark sites.

Polar Alignment with the EQ6-R

The first thing you have to do with any mount, once it is assembled, is to polar align it. There are a few ways to polar align a mount; two common methods are to use a built-in physical polar-alignment scope or to use software-based alignment. The latter uses some sort of star-drift or star-position alignment method.

Sky Watcher EQ6-R Pro Review 1
Two examples of scope types shown on the phone app polar aligner pro. You are polar aligned when the real Polaris matches the position of the white dot shown on the dials above.
There is a similar method, using a 4 star asterism for southern hemispherians

The software method is worthy of an article on its own so I will only talk here about the method you can use with the built-in tools that are supplied with the mount. 

This takes a bit of getting used to and you will have to choose a phone app that you find works for you, but once you know what you are doing, polar aligning with the built-in scope is a breeze.

Good polar alignment is the bedrock of using any mount successfully. The easier the mount makes it to carry out this task, the more enjoyment you’ll get out of using it. To this end the EQ6R has its own built-in illuminated polar alignment scope.

It’s as well made as the rest of the mount with a lovely smooth focus control. I will however mention at this point one of the best mount accessory investments you can make; 

Buy a right angle eyepiece. Just do it – you can thank me later! Trust me, if you are any older than a teenager, trying to orientate yourself in the correct position to look through a straight polar scope is uncomfortable, if not painful. 

If you live at lower latitudes this becomes less of an issue as the pole will be lower down in the sky meaning that the eyepiece will be higher up, but at my latitude of 56 degrees north – well just look at the photos below and try to work out where I have to put my head! 

Apart from that, alignment is theoretically simple. Just turn the nearby alt/az controls back and forth until polaris (in the northern hemisphere), matches the position shown on a polar alignment app such as Polar aligner Pro, at your location and time. 

In the southern hemisphere it’s even easier- move the controls whilst looking through the scope until the real sky matches what you can see in the reticle. To that end an engraving of the constellation of Octans is built-into the reticle.

One setup issue I had, was trying to work out the correct position to set the declination axis to so that you can see through the declination shaft. Yes it should be horizontal so that the gap in the shaft is fully open, but just ‘horizontal’ seems a bit vague to me and the physical position will affect the position of Polaris/Octans in relation to the real sky thereby affecting accuracy. Just something to be aware of. 

Another issue is the altitude handle. It’s a kind of spring loaded thing which has to catch onto an internal shaft/thread, then you have to loosen or tighten the knob at the other end to move the mount. There must be a better way! This is fiddly in the extreme and will account for the majority of your polar alignment time with this mount.

Sky Watcher EQ6-R Pro altitude handle
Above. Unless you are only 2ft tall, positioning yourself comfortably at the polar alignment eyepiece can be traumatic. Buy a right angle eyepiece ! Below that is the altitude adjustment handle; I did not like this device at all.
Sky Watcher EQ6-R Pro Review 2
Left. The polar scope optical path through the mount (eyepiece on the right of the image)
Right. The view through the polar alignment eyepiece showing the ‘clock face’ and Octans to the left.

Mount Performance

After several months of testing I found the mount to be mostly flawless in operation. I say mostly because the only issue I encountered was when I came close to, or perhaps a touch over the recommended weight limit for photographic use; I was using an comically large OTA as a guide-scope, piggy-backed on the OTA. 

I found that the tracking was becoming erratic with the target progressing gradually across the frame over an hour or two’s exposures, instead of being rock-solid locked to the center of the frame. 

Perhaps I just needed to balance the axis better- the closer you get to the maximum weight the more critical balance becomes. Either way, avoid overloading the mount and this issue will not occur.

With the above issue excepted, the mount performs very well- slewing is fast, quiet  and accurate; unless you have your ear to the mount, you will only hear the motors at full slew speed.

Tracking accuracy is also very respectable, assuming you are guiding and you are accurately polar aligned. I was using PHD2 for my guiding and I was, on a good windless night, obtaining graphs which were pleasingly smooth and flat at 2px resolution or RMS error of around 0.4”. 

This was just me during one session so do not take such figures as gospel- you may do better or worse! What constitutes good guiding figures is also a matter of debate, but suffice to say, using my Celestron C925 at its full focal length of 2350mm I can easily obtain hours worth of subs where the target remains rock-solid glued to the one spot in the field of view – first captured image to one 4 hours later –  no movement. 

I think this is all you can ask of a mount at this price point. You only need greater accuracy if you are using much longer focal lengths.

Unguided, whilst tracking solar system objects, some drift did become apparent, though never enough for something the size of the moon to leave the field of view, even over several hours. It just wouldn’t be centered anymore. 

Remember though that there are various mount-training routines that can be performed to iron out periodic errors that all mounts suffer from to some degree. So do not let a little unguided drift put you off.

The EQ6-R for Astrophotography

This mount really is made for astrophotography. An example of this is the provision of a ‘Snap port’, which is a connection for connecting to a camera’s shutter control port. The SynScan hand control can control a camera to take pictures automatically via this interface thus avoiding touching the camera and causing shake.

For more sophisticated astrophotography control you will however probably want to link up to a PC to open up the world of ASCOM controlled software. For much of my testing this was the method I used.

I found that everything works as expected- the mount, once connected, strays connected which is what you want when spending hours imaging, often unattended. The mount ‘disappears’ in the system, just quietly getting on with its job and not requiring intervention. 

Third party wifi attachments are available for a more wireless experience. Many people may also use the popular  ZWO ASI airplus astrophotography controller. I did not get a chance to test such products with the EQ6-R. 

Whilst I have no doubt of the validity of the experiences of many satisfied users of such products I tend to believe that you can’t beat physical cables (assuming they are of decent quality and are arranged so as not to snag) when you need something to work dependably. nobody wants to waste precious dark nights on wifi connectivity issues.

Used with USB connection to my windows laptop then, the mount carried out all its object location, centering and plate-solving tasks without issue. I mainly use N.I.N.A. for deepsky and Sharpcap for planetary and its wonderful array of set-up/calibration tools. I also found that the mount connected without issue to Cartes du Ciel for cartography target acquisition and of course PHD2 for guiding.

Sky Watcher EQ6-R Pro Review 3
Everything going nicely with NINA and PHD2 controlling the mount (except for the odd gust of wind, which PHD recovers from quickly).

The EQ6-R for Visual Observing

This mount may be slight overkill if you will only ever be using it for visual astronomy. An Alt-azimuth mount will do that job just fine. It is however still suitable for visual use when you crave those photons firing directly into your retina or want to show off your scope’s capabilities to an audience. 

Nothing inspires an interest in astronomy better than seeing the planets or bright deepsky objects ‘live’ in the eyepiece. For visual use you must use the hand-controller, for the simple reason that there are no physical slow-motion controls built-in to the mount.

Sky Watcher EQ6-R Pro hand controller

People either love or hate these hand-controllers. Hate, because they have not really been updated much in appearance or function since the 1990’s. To me however using the hand-controller is infinitely better than trying to control manually from a phone or computer’s virtual buttons.

Using the 1/2/3 star alignment process

Firstly a recommendation. For a variety of reasons I do not think that the supplied finderscope or similar devices that magnify, are suited for manual star alignment. Buy a red-dot finder or better still something like a Telrad or Rigel finder. These stick onto your scope and have no magnification offering you a better chance of seeing the alignment star in the field of view.

I won’t go into detail here about how to carry out a star alignment- the method is the same across any number of mounts with a handset. However I’ll just say that the process is painless with the EQ6-R 

You can control the speed (using  ‘rate’ on button 2 of the handset). The main thing to know in the context of this review is that the EQ6-R moves at a beautifully constant rate regardless of which speed you choose. Faster rates to move the star when it’s way out from the center, slower rates to fine tune the centering. Even well machined fully manual slo-mo control knobs would struggle to be this smooth.

Sky Watcher EQ6-R Pro Build

Storage

Telescope mounts are heavy and take time to polar align so if you do not have indoor storage options or an observatory dome, it should be fine to leave set up as long as properly protected from the elements. I recommend the Telegizmos 365 range of all-weather covers.

Many people in damp climates use reusable desiccant bags hung off the mount to keep the localized air-space around the mount relatively dry.

Be aware that Skywatcher makes no claims of weather or even moisture-proofness for the EQ6-R mount. I queried the suitability of leaving the mount outdoors with them and they stated the following (spelling and grammar as per email!)

Skywatcher Email Response

There is a carry bag available which you may want to store the mount in if you are not going to be using it for a while or if you are taking it to darker skies on holiday.

Sky Watcher EQ6-R Pro Specs

Sky Watcher EQ6-R Pro
Product Title
Product Title
Sky Watcher EQ6-R Pro
Mount Load Capacity
Mount Load Capacity
44lbs
Computerized Hand Controller
Computerized Hand Controller
SynScan hand controller
Database
Database
42900 Objects
Latitude Range
Latitude Range
65 Degrees
Number of Auxiliary Ports
Number of Auxiliary Ports
4
Mount Type
Mount Type
Equatorial Mount
Weight Fully Assembled
Weight Fully Assembled
76.5lbs

Final Thoughts on the EQ6-R Pro

The EQ6-R Pro is a fantastic mount, but not without its issues. Most of these issues relate to design issues of parts which most users will only use occasionally. If you keep your equipment set up on a semi/permanent basis, either in an observatory or outdoors undercover, these issues won’t bother you during daily usage.

It’s very heavy which is good for stability but not so good if you tend to put everything away at the end of a session. I found it performs its stated functions very well and it looks great with an unfussy finish that is nonetheless perfectly functional. 

So whether or not I can give the EQ6-R a glowing endorsement depends on how you use it. Permanent set-ups – absolutely recommended. More portable requirements- you may want to consider alternatives.

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