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Bresser Messier AR-102/1000 EXOS-2 GOTO Telescope Starter Kit

Bresser Messier AR-102/1000 EXOS-2 GOTO Telescope Starter Kit
Price:  £1,308.00(Inc. 20% VAT)

Model:  4702110
Brand:  Bresser



Generally In Stock, Please Confirm Before Ordering

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

This telescope starter set leaves nothing to be desired. The BRESSER Messier AR102/1000 EXOS2 GOTO is a modern astronomical telescope, here including an extensive accessory set at a special price. It guarantees you an uncomplicated start and many possibilities for discovering the universe.

NEW - now including a high-quality aperture Solar-filter for safe observation of sunspots, eclipses and planet transits. Great telescope for night and solar observation.

Ambitious beginners and advanced observers alike will see the brightest objects outside our solar system with the BRESSER Messier AR-102. Watch details in the Great Orion Nebula from the astonishing distance of 1500 light-years ( km)! The rock-solid mount provides relaxed views even at high magnifications; rigidity and usability are setting new standards in this price range. Due to the sophisticated mount you can even start taking pictures of the moon, planets or deep sky objects. You will never give the BRESSER Messier AR-102 away voluntarily.

This telescope set also includes the following accessories:
Deluxe smartphone holder for photographing through the telescope (Art-No. 4914914)
2 Plössl eyepieces with focal lengths of 6.5 and 15mm for higher magnifications (Art-No. 4920206+4920215)
Color filter set No.1 , Light-Yellow, Orange, Blue, Grey ND0.9 (Art-No. 0310291)
BRESSER HD Moon & Planetary USB Camera & Guider 1.25 inch (Art-No. 4959040)
ASTRO R-LITE Red Light Flashlight (Art-No. 0340100)

Optical design: refractor telescope
Lens diameter: 102mm / focal length: 1000mm / F/9,8
Maximum recommended magnification: 204x
Telescope Starter Kit contains many additional accessories
Telescope for night and solar observation
Details of the moon, sun and planets visible (only with protective solar filter)
Also suitable for bird watching and terrestial observation
Observe sunspots, eclipses and planet transits (only with protective solar filter)
Additional 2 eyepieces with focal lengths of 6.5 and 15mm for higher magnifications
Photographing objects with your own smartphone
Increased visibility of object details through the use of color filters
Take photos and videos conveniently with Bresser USB HD camera
Orientation and reading of star maps at night by red flashlight
Smartphone holder as navigation aid in the night sky
High end Hexafoc-focuser with 2,5 inch free inner diameter
All telescope axes supported by ball bearings for smooth tracking
Adjustable polar finder scope with optional illumination
ST-4 compatible autoguider interface
All aluminium cast parts with high end powder coating
Brass worms with ball bearings
GoTo Mount with motors and hand box controller, for easy finding and guiding moon, planets, stars and much more
Bubble level for easy tripod setup
8x50 straight through viewfinder with reticle; optimized finder socket for comfortable use
31.7mm (1.25 inch) diagonal mirror
Cradle rings with handle and integrated piggyback camera holder (1/4 inch thread)
Dovetail plate with stainless steel rail
50,8mm (2 inch) to 31,7mm (1,25 inch) adapter with integrated T2 thread (T2-adapter ring for your camera is needed)

Telescope with mount and tripod
26mm Super Plössl eyepiece 31,7mm(1.25inch)
31,7mm (1.25inch) Zenith mirror
integrated 31,7mm and T2 adapter
Tube clamps with dovetail rail for GP-Level
Handle and camera holder
6x30 optical finder
Additional 2 eyepieces with focal lengths of 6.5 and 15mm
Deluxe smartphone holder for taking pictures though the telescope
Color filter set No.1 , Light-Yellow, Orange, Blue, Grey ND0.9 , Durchm. 31,7mm (1.25inch)
Bresser HD WIFI Camera diam. 31,7mm (1.25inch) Android+iOS
ASTRO R-LITE Red light Flashlight
Solarix solar filter film A4 for self construction of a lens solar filter
Smartphone holder as navigation aid in the night sky
Astronomy software Stellarium
rotatable star map

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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

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.

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


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