The Travel Scope 50 Portable Telescope from Celestron represents an economical foray into the world of telescopes, and it was designed with traveling in mind. This budget-minded refractor features an aperture of 50mm and a focal length of 360mm. It comes with two 1.25" eyepieces and a 3x Barlow lens to accommodate various viewing scenarios. An erect-image 45° diagonal provides angled viewing, and it also corrects the image laterally for normal terrestrial viewing. The Travel Scope 50's compact and portable form factor allow it to be stored and transported easily in its custom-fit backpack case.