Explore Scientific 100° Argon filled Eyepiece - 5.5mm (2") Refreactor But included are three M90

But included are three M90 extension sleeves (1x 50mm 2x 25mm) which are simply screwed between the focuser and the tube

Failure to comply with safety measures can result in serious injury or permanent damage to your eyes

doubles the focal length for visual observations or planetary photography

Aurora Borealis is commonly visible in the northern artic skies as radiation from the Sun hits our atmosphere and creates a magical plasma effect

Explore Scientific 100° Argon filled Eyepiece - 5.5mm (2") Refreactor But included are three M90These 100 eyepieces from Explore Scientific offer a truly unique combination of excellent contrast and edge sharpness, even with fast optics and a huge field of view. In fact with such a wide field of view, you can sometimes forget that you are looking through a telescope as you gaze over the enormous, seemingly unlimited expanse of space. Due to the perfect combination of a wide variety of modern glass materials, these eyepieces from Explore