The Celestron Travel Scope 70 has a front lens diameter of 70 mm and a focal length of 400 mm. A telescope with these specifications works well for terrestrials observations, and if mounted on a tracking mount, may produce good results in long exposure imaging. Due to its small aperture and short focal length, it has a very limited use for astronomical observation (only good for low power views). Note that the telescope showed signs of chromatic aberration.



Orion Nebula M42 imaged with a Celestron Travel Scope 70, an ASI 533 astronomy camera, and a Meade LXD75 tracking mount
Related link: View all home-brewed DIY astronomy equipment
Night Sky in Focus © Anthony Urbano | Bacoor, Philippines