Dear international customers!

If you are from a non-EU country and if you are interested in our products, please contact us. Just send us an email, we will be happy to calculate the international shipping costs for you...

Welcome to the Backyard Universe

Discover our useful upgrades for Newtonian telescopes from Skywatcher & Co. as well as accessories for astrophotography.

Transform your telescope into a powerful telescope optimized for astrophotography. Especially the collimation stability, but also the image quality* are significantly improved by our upgrades. On our HowTos page you will also find further useful information as well as installation instructions for our products.

*assuming correct collimation and good mirrors

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HowTo's - Installation instructions and tips for tuning

In order to leave no questions unanswered for the installation of our products, we have added installation instructions and useful tips for the tuning of Newtonian telescopes in our new HowTo's section.

An overview of the advantages

Especially in the field of astrophotography, our upgrades offer significant advantages and improve the imaging performance of the entire system significantly. But also the mechanical stability and collimation properties as well as the collimation stability will be significantly improved.

Star Imaging

The diffraction-induced spikes on stars become razor-sharp. The typical spreading, which is caused by the inaccurately aligned struts of less stable secondary mirrors, is therefore impossible.


Due to the stable design of the aluminum (EN AW 6061) secondary spiders, the collimation properties of the Newtonian telescope are significantly improved. Once adjusted, the Newton holds the collimation longer.


The solid outer ring of the secondary spider stabilizes the tube in the area of the focuser (OAZ). This reduces deformations caused by heavy weights on the OAZ (cameras and accessories), especially when using steel tubes.

Original configuration, Skywatcher 200PDS without any modifications

CNC machined secondary spider SW200 made of aluminum (EN AW 6061) and mirror mask made by 3D printing (PLA, treated with anti-reflective paint)