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Celestron PowerSeeker 127EQ Newtonian Telescope With Motor Drive

Celestron PowerSeeker 127EQ Newtonian Telescope With Motor Drive
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Celestron PowerSeeker 127EQ Newtonian Telescope With Motor DriveCelestron PowerSeeker 127EQ Newtonian Telescope With Motor DriveCelestron PowerSeeker 127EQ Newtonian Telescope With Motor Drive
Celestron PowerSeeker 127EQ Newtonian Telescope With Motor DriveCelestron PowerSeeker 127EQ Newtonian Telescope With Motor Drive
Price  £155.00
List Price  £259.00
Saving Of  £104.00
(Inc. 20% VAT)
+
Add Accessory Bundle (Moon Filter, Planisphere & Smartphone Holder)

Model:  22039
Brand:  Celestron

Availability  

  

Generally In Stock, Please Confirm Before Ordering

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




*Special offer while stock lasts *

Discover our Solar System with the Celestron PowerSeeker 127EQ! You’ll be ready to observe in minutes thanks to the quick and easy no-tool setup. The 127EQ provides bright, clear images of the Moon, planets, star clusters, and more for great night time viewing.

Manual German Equatorial telescope

The PowerSeeker mount comes with two slow motion control knobs that allow you to make fine pointing adjustments to the telescope in both Right Ascension and Declination axes, also referred to as RA and DEC.

Accessories Included

Accessories include a 20mm and 10mm eyepiece, a finderscope, a smartphone adapter, and a motor drive. The two eyepieces offer different magnifications for low and high powered views. The 3x Barlow lens triples the magnifying power of each eyepiece.

Motor Drive - Turn your manual German equatorial mount into a tracking mount by adding the included RA motor drive to your telescope. This easy-to-install RA motor drive compensates for the Earth’s rotation, so the telescope tracks a star’s movement through the night sky from east to west. When the telescope mount is properly polar aligned and the RA drive is attached and running, the user need only make occasional adjustments in declination (Dec) to keep an object in the eyepiece for long periods of time. The Celestron single-axis motor drive runs on a 9V battery, so there are no cords to get in the way. The drive can be used in either the Northern or Southern Hemisphere. To change hemispheres (reverse the motor’s direction), simply by flip the N/S switch on the face of the motor drive. It is also simple to change the speed of the motor. A “Speed Rate Regulator” knob is located just under the power indicator and can be turned in either direction to slow down or speed up the motor. Since solar system objects like the Moon and planets move through the sky at different rates than deep-sky objects do, this gives you the ability to match the motor’s speed to the particular type of object you are observing.

Smartphone Adapter - Image celestial or terrestrial objects with this smartphone adapter. With its light, rigid frame, this accessory allows you to connect any smartphone to any telescope eyepiece with an outside diameter of 34mm. The additional magnification provided by the eyepiece allows your phone to capture great images of the Moon and planets. This adapter installs easily by placing the smartphone over the telescope eyepiece and tightening the knobs to securely lock your phone in place. The adapter accommodates most phones with the case on, but some large and/or bulky phone cases (including folio style cases) may need to be removed for the phone to fit in the adapter.

Starry Night Software

Download Celestron’s Starry Night Software and learn about the night sky, celestial objects, and how to plan your next observing session. Celestron Starry Night Software is the premier astronomy software package on the market, providing resources and knowledge to view our solar system and beyond.

OPTICAL TUBE INFO:
Optical Design Newtonian Reflector
Aperture 127mm (5")
Focal Length 1000mm (39")
Focal Ratio f/7.87
Focal Length of Eyepiece 1 20mm (0.79")
Magnification of Eyepiece 1 50x
Focal Length of Eyepiece 2 4mm (0.16")
Magnification of Eyepiece 2 250x
Barlow Lens 3x
Finderscope 5x24
Highest Useful Magnification 300x
Lowest Useful Magnification 18x
Limiting Stellar Magnitude 13
Resolution (Rayleigh) 1.1 arc seconds
Resolution (Dawes) .91 arc seconds
Light Gathering Power (Compared to human eye) 329x
Secondary Mirror Obstruction 41mm (1.6")
Secondary Mirror Obstruction by Diameter 32%
Secondary Mirror Obstruction by Area 10%
Optical Coatings Aluminum
Optical Tube Length 508mm (20")
MOUNT INFO:
Mount Type Manual German equatorial
Tripod Aluminum
Software Starry Night Basic Edition
PHONE ADAPTER INFO:
Phone Compatibility Any smartphone
Comptabile Optics Any 1.25" eyepiece supplied with PowerSeeker and AstroMaster telescope kits or any eyepieces with a 34 mm outside diameter
Dimensions 6.5" x 4.5" x 1"
Weight 2 oz
Included Items Newtonian Reflector | 20mm & 4mm eyepieces | 3x Barlow Lens | Finderscope | Motor drive | smartphone adapter | Tripod & mount | manual

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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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Rother Valley Optics Ltd
Rother Valley Optics Ltd