About astronomical telescope

◎ Telescope aperture: 60.00 mm, focal length: 900.00 mm, various properties:

★ Visually pass the magnitude: 10.89, etc.

★ Theoretical resolution: 2.333 arc seconds, equivalent to seeing two objects at a distance of 1. 13 1 cm.

★ Optical power: 0.067

★ Ideal magnification: 8 to 40 times, corresponding to the eyepiece focal length of 7 to1.5 mm. The maximum magnification shall not exceed 120 times.

★ Film scale: that is, the angular distance of an angle on the celestial sphere is equivalent to the distance of 0.262mm on the film.

This telescope should be "Phoenix", which is not very good. H eyepiece is Huygens eyepiece, which is rarely used in astronomical telescopes and is mostly used in microscope eyepieces. There is no need to configure 3x Ballaugh lens.

The aperture ratio of the objective lens is small, which is suitable for watching the planet. If you want to see the nebula, you can choose a reflective telescope, and you can also see the constellation with the naked eye. If you are familiar with constellations, it is better to introduce them with binoculars, which has a wide field of vision and is simple to operate. But this telescope is quite suitable for beginners. If you are rich, I recommend the tube wave pioneer 60/700 telescope.