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iOptron CEM40-EC Centre Balanced EQ GOTO Mount & Tripod With RA Encoder

iOptron CEM40-EC Centre Balanced EQ GOTO Mount & Tripod With RA Encoder
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Price:  £3,749.00(Inc. 20% VAT)
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Model:  C404A1
Brand:  iOptron



2 Year Warranty On All New Items
(Excluding Batteries & Globes)


  (1 Review)

The iOptron® CEM40 mount is the next generation of center-balanced equatorial mounts. This mount is incredibly eye-pleasing, and its beauty is found in more than its appearance. The functionality of the mount is superb. Weighing in at only 15.8lbs., this mount can support a payload of up to 40lbs.! That's incredible! This model comes complete with high precision RA encoder.

This mount also has an integrated electronic polar finder scope known as the iPolar. This tool ensures the accurate alignment of a telescope, even when the pole star is obscured. There are large levers on the quick-lock drive engagement system; these large levers make it easy to snap the gears into place.

Innovative iOptron Technology
Make way for an innovative mount! This iOptron CEM40 mount uses iOptron's patent-pending Universal Self-Centering Saddle (USCS). This saddle accommodates Losmandy and Vixen-style dovetail plates. The CEM40 also uses iOptron's ultra-quiet, low-power consumption stepper motor drive system, aiding the mount in providing precise tracking.

Computerized Mount Features
The iOptron CEM40 mount uses the Go2Nova® 8407 hand controller to navigate the night sky. This incredible technology helps observers find celestial objects with the aid of the mount's 212,000+ object database! For those looking for a telescope that has the capability of tracking and finding beautiful night sky objects, this mount is a must have tool.

With the included tripod, 10lbs. counterweight, and the mount's computerized technology, observers are just an OTA away from a spectacular viewing experience!

Features
Unique design, Center-Balanced equatorial mount (CEM) for maximum payload and minimum mount weight
Idea for both visual observation and astrophotography
Maximum payload of 40 lbs (18 kg) with the mount weight of only 15.8 lbs (7.2 kg)
All metal, CNC machined with red/black anodized
Easy to use quick-lock gear clutches
Integrated iPolarTM electronic polar finder
Low periodic error (< ± 7 arc seconds)
Permanent periodic error correction (PPEC)
Precision stepper motor for precise GOTO and accurate tracking
Go2Nova® 8407+ controller with Advanced GOTONOVA® GOTO Technology with built-in heater
Integrated ST-4 autoguiding port
32-channel Global Positioning System (GPS)
USB communication port
Cable management system
New, patent-pending iOptron universal saddle
Standard 1.5 inch heavy-duty stainless steel tripod (5kg)
Optional WiFi for mount control via SmartPhone/Tablet/Computer

Average Rating (1 Review):  
Write a Review and share your opinions!

Rating:  
Best All Round Mount
18 April 2021  | 

I have had this mount for nearly three years now. As well as this mount I have a Skywatcher HEQ 5 Pro also on a tripod and an 10Micron GM1000 HPS.

Out of those three the CEM40 is the best all round mount. Itís is the lightest of the three, the easiest to setup and accurate. The mount pairs very well with my William Optics GT81, also a quick and light scope to setup. The point is when we get a clear night this setup is the easiest to setup and get yields exceptional results.

The things I like the most about the mount are:
1) The hand controller makes setting up the scope easy. It is also intuitive. It is far better than the Skywatcher hand controller.
2) The GPS module is a big help in making the mount accurate. Once you have setup the control first time the only thing you need to alter is daylight saving changes twice a year.
3) Through the mount wiring makes cable tangles around the mount a thing of the past. I donít use the supplied through the mount wiring, I thread a USB cable through the mount so that I can connect my scope mounted PC to the USB on the mount.
4) The alt/az adjustments for polar aligning are smooth which makes polar alignment quick and easy.

My mount has the iPolar polar alignment camera. I would rate that as OK. I have found the software that drives is temperamental, not always working on my PC. However once you get it working it is fine and quite quick to use. Personally I prefer to use polar alignment routine in SharpCap.

With respect to the encoders, to be honest I have never used them PHD2 is simple to master and yields very good results.

Was this helpful to you?  Yes  /  No

2 of 2 people found this review helpful.

Some items that are showing as in stock are in stock at our holding warehouses, not at the shop. To double check the stock levels at the shop, please contact us on 01909774369 or sales@rothervalleyoptics.co.uk.

The delivery times for most items is 1 - 2 days but again, please double check stock levels on important orders before placing an order via the website.

The delivery costs for courier next day are for mainland UK only. If you live in the Scottish Highlands/Islands, Channel Islands or Northern Ireland, then a shipping surchage will apply. please contact us for prices. Smaller items can still go 1st class via Royal Mail.

Please note that if you are wanting to take advantage of our Saturday and Sunday timed services or next day pre 12 or pre 10:30 services, you MUST check that the stock is here at the shop before placing orders. Also, orders using the Saturday and Sunday services must be placed before 1pm the previous working day. Also, please remember to check that the stock is here at the shop before placing orders. If the stock is not at the shop, we won't be able to ship on any of the timed services. 

Please note International customers will need to contact us for a shipping price prior to ordering via the website. We don't ship all items internationally. It is at our discretion what we ship outside of the UK. This all depends on the size and weight of the items. Please get in touch with us for any postage costs. Please note we do NOT ship telescopes or heavy items outside of the UK. This is due to massive postage costs and problems regarding returns.

If you have any questions regarding stock levels or delivery, please get in touch.

Zygo Interferometer Testing For ED Refractor Telescopes!

We are extremely pleased to announce our Zygo Interferometer is now installed and ready for use! Our experienced staff can test refractor lenses up to 120mm aperture and provide a comprehensive 2 page report showing the optical quality and Strehl ratio, plus much more information. We are using the very latest Zygo MX software to provide a more detailed report compared to other standard reports.

 

The interferometer is essentially a measuring instrument. Within the interferometer is a calibrated laser that is pointed through the optical test surface, then onto a high quality reference sphere, then back through the test subject then to an internal camera which gives us the measurement on the screen. From this, we can adjust the position of the test optic and the reference sphere to obtain a perfectly calibrated system. The more central the laser to the test optic and then on return, the better and more accurate reading and measurement we can take. This takes a lot of adjustment to get the best results from the optical surface. Once the measurement has been taken, we are provided with a series of results that show the optical quality of the surface plus other information. Continue reading for an explanation of the individual values and you can also see a test report that was done on one of our RVO Horizon 60 OTAs. 

We are offering certain telescopes with a Zygo test at an extra cost. Mainly ED doublets and triplets. All available telescopes with a Zygo test report are listed here. Just select Zygo Test Report from the drop down box at the top of the listing and we will test the optics in house and provide a full 2 page report with your scope. This will show you the optical quality of your telescope optics. We can also offer this service on your refractor telescope. Please get in touch for more details about this. 

At Rother Valley Optics, one thing we pride ourselves on is customer service and quality of our equipment. When we test your telescope, we will ensure that it is of the highest quality otherwise, we will reject the scope under our strict quality control and test another model for your peace of mind. One of the main values to look at when testing a refractor is the Strehl ratio. The higher this number, the higher quality lens you have. At Rother Valley Optics, we will guarantee the highest possible Strehl ratio for your telescope.  We will aim to provide 0.95 Strehl or higher on Takahashi, RVO Horizon, William Optics and many more! Generally, the higher the Strehl ratio, the lower the Astigmatism and Coma meaning a better image quality from your instrument. 

Other measurements such as the PV and RMS are important too. With these measurements, the lower the number the better as it shows less curvature on the lens. The flatter an optical lens, the better it will perform. The PV rating (Peak To Valley) is a measurement from the highest point (Peak) to the lowest point (Valley). From this we get the RMS (Root, Mean, Square). This is a similar figure to the PV and measured exactly the same way. The RMS is basically an average height difference from the PV so again, the lower the better. As you can see form the example below, we measured an RMS of just 0.027 wave which is a very good value.

We also measure the Power with our systems which is essentially the error from the reference sphere to the test optic. The reference sphere we use on our system is a very high quality sphere so the closer to zero the Power, the less error between the 2 elements thus ensuring a higher quality optical surface. 

You will also see some more values such as Astigmatism and Coma. Again, these are measured by the interferometer when we take measurements of the optical surface after adjustment. These are values which ideally would be at 0 but as our test optics are all curved lenses, there will always be astigmatism and coma present. The lower the number, the less of these aberations you will effectively see but with most refractors, you can buy field flatteners which will compensate for the coma anyway. The astigmatisms value is explaining the error between the symmetrical curvature of the lens. Basically, no lens will be perfectly symmetrical, the lower the astigmatism, the more symmetrical the lens surface is. 

Once the Zygo test report has been completed, the optical alignment is thoroughly tested and tuned to ensure they are spot on before they leave us. 

All available telescopes are on the website at the link below and ones we've tested already that are available straight away are also listed.

https://www.rothervalleyoptics.co.uk/zygo-tested-refractors.html

Here is an example of the test what we provide. This was a test on one of our Horizon 60 ED OTA's.

For any questions about this amazing new service, please either call 01909774369 or email sales@rothervalleyoptics.co.uk.

 


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  (1)

The iOptronģ CEM40 mount is the next generation of center-balanced equatorial mounts. This mount is incredibly eye-pleasing, and its beauty is found in more than its appearance. The functionality of the mount is superb.