Bresser Stellar 60/800 AZ Refractor Telescope

Exploring our solar system: the starter telescope with extensive accessories shows you the Sun, Moon and planets at their best.

Complete set of telescope, tripod, mount and accessories
Easy to use refracting telescope for beginners
Telescope aperture: 60 mm / focal length: 800 mm
Ideal for observation of Sun, Moon and planets
Includes smartphone adapter for first steps in astrophotography
Plenty of accessories to get started right away
With safe aperture solar filter

Simply set up and explore the Moon, Venus and co. straight away: With the BRESSER Stellar 60/800 AZ lens telescope, getting started in sky observation is quick and easy. The complete set already contains the necessary equipment for your new hobby: the astronomical lens telescope with 60 mm aperture and 800 mm focal length, the azimuthal mount, the tripod and extensive accessories for your voyage of discovery through the solar system. The beginner's telescope is very easy to use and therefore ideal for getting children excited about astronomy.

Well-tried classic for completely new impressions - the telescope
Especially for beginners and children, this classic lens telescope - also known as an achromatic refractor of the Fraunhofer type - makes it easy to enjoy astronomical sights. The modern, precisely coated optics ensure good imaging properties. Another strength of the optics: the 60 mm aperture and the 800 mm focal length result in a very large focal ratio (ratio of the aperture to the focal length) of about 1 to 13.3 (F/13.3). The result: a very sharp image with good contrast. The long focal length also makes the telescope a specialist for lunar, solar and planetary observation. However, open star clusters and globular clusters are also guaranteed to amaze you when you look through the telescope.

And how big do the celestial objects appear? With the aperture size, the starter telescope achieves a resolving power which lets you enjoy really sharp images at up to 120x magnification. Technically, this entry-level telescope is capable of more - theoretically up to 600x with the included accessories. But: with increasing magnification, the image sharpness can slowly decrease. Of course, not only the telescope plays a role when it comes to magnification. The air turbulence in the atmosphere (seeing conditions) also affects your view of the night sky.

The foundation for your view into space - mount and tripod
The telescope tube is held securely on the height-adjustable aluminium tripod with azimuthal mount. And this azimuthal mount has a great advantage: it is very easy to operate. Just like a common photo tripod, you simply swing the telescope manually to the left and right, up and down. Perfect for beginners in astronomy and children. But where to put the accessories? To keep them within easy reach, just place eyepieces, solar filter etc. on the storage plate between the tripod legs.

All you need for a quick start in astronomy - the accessories
For your fascinating view of the night sky, the telescope for beginners comes with lots of accessories. Among them you will find a LED-viewfinder, with which you can easily keep track of the sky. It is mounted parallel to the actual telescope and projects a red dot onto a small screen. When you look through the viewfinder, the red dot appears to float in front of the sky - right where your starter telescope aperture is pointing. This way, the finder helps you to align your optics precisely and locate celestial objects - before you then take a closer look through the magnification of the telescope.
You determine how much magnification you get by choosing the eyepiece. You will see: The two eyepieces (4 mm, 20 mm) included in the set alone offer quite different perspectives on the beauties of our cosmos. For the most versatile views possible, the socket diameter of 1.25 inch (31.7 mm) also complies with an international, manufacturer-independent standard. So if you want to expand your astronomy set later, you will have a wide choice of models.
You have found an astronomical highlight and want to see even more details? Then place the 3x Barlow-lens between the telescope and the eyepiece. It will triple the magnification.

Meanwhile the included 90-degree star diagonal mirror lets you comfortably admire the night sky. Even though your entry-level telescope is pointed upwards, you don't have to lie down underneath to enjoy the view. Instead, you look in comfortably from the side.
But it is not only at night that we can observe the beauty of outer space. During the day, our own Sun is the undisputed star in the sky. So attach the solar filter to the aperture of your beginner’s telescope and safely observe sunspots and granulation.
CAUTION: Never point the telescope at the Sun without the solar filter!

To capture and share your unforgettable moments in astronomy, take your very own snapshots with the smartphone adapter. Thus the very first step towards astrophotography is easily taken!

Look forward to your complete astronomical starter package and a whole new view of the Sun, Moon and planets - with the BRESSER Stellar 60/800 AZ lens telescope.

FEATURES
Beginner’s telescope for astronomy
60 mm aperture and 800 mm focal length
Achromatic refractor type Fraunhofer
Ideal for observing the Sun, Moon and planets
Height-adjustable tripod with azimuthal mount
Easy to use, therefore suitable for children
Focal ratio F/13.3, therefore very sharp image and high contrast
Two eyepieces and one Barlow-lens with 31.7 mm (1.25 inch) sockets for different magnifications
Safe solar observation with the included solar filter
Entry into astrophotography with smartphone camera adapter

SCOPE OF DELIVERY
Starter lens telescope
Aluminium tripod
Azimuthal mount
Eyepieces: 4 mm and 20 mm (1.25 inch sockets)
Barlow-lens 3x (1.25 inch sleeve)
Star diagonal mirror
LED red dot finder
Solar filter
Smartphone camera adapter
Accessory tray
Astronomy software via download
Instruction manual

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.

Are you interested in this product but would like to speak to someone with some more information? Simply fill in the form below and we will get back to you as soon as we can!

* Name

Please enter your full name

* Telephone Number

Please input your telephone number here

* Model Number

Please enter the model number which is just above

Additional Information

Please include any information here that will help our staff members assist your query

*

Please add the two numbers

SubmitSubmit