TESTAR 50mm GUIDE SCOPE ZWO Lens the Delta Rho has a

the Delta Rho has a fixed primary mirror

The iOptron GEM45 is an innovative next-generation German equatorial mount

Ships in convenient Twist-Case for safe

or any flat surface

Clip-in filter installation instructions

TESTAR 50mm GUIDE SCOPE ZWO Lens the Delta Rho has aThe Testar 50mm Guide Scope has a focal length of 190mm and a focal ratio of f 3. 8. The objective is a fully multi coated achromatic doublet for a greater optical precision. The border of the lenses are blackened to deliver a higher contrast. The 69mm support rings have 3 screws with a nylon tip for a perfect alignment with the main telescope. Having the guide scope aligned to the main telescope increases the guiding accuracy and it reduces the field