Moon / Planets / Deep Sky / Sun / Terrestrial Landscapes. These subjects of observation have:
► Different sizes
► Different brightnesses
► Large diameter
The larger it is, the better it is.
► Wide field
It must be large enough to contain the deep sky objects, the moon, or the sun.
► Avergae focal ratio
It is advisable to choose an instrument having a focal ratio between 5 and 10.
► Several magnifications
The magnification and the field of view of the telescope depend on the focal length of the eyepiece (Magnification = Tube focal length / Eyepiece focal length). If we want to observe all kinds of celestial objects, it is necessary to possess several eyepieces (at least 3 magnifications).
► Manual or motorized tracking
Photography of deep sky objects is the only discipline that requires a motorized tracking (motorized equatorial mount or azimuthal with Go-To + field derotator). However, motorized tracking allows you not to manually re-orient the telescope when the object goes out of the field of view.
► All types
Filters are needed to observe the Sun, and highly recommended for other celestial objects.
► Bresser Telescope AC 152/1200 Messier EXOS 2 GoTo
► Meade Telescope ACF-SC 203/2000 LightSwitch GoTo