I have a go-to 3″ telescope with the focal ratio of f/14. Why cant I see all 14,000 objects in the database?
Many of the objects listed in the database are deep sky objects which are rather dim and require a larger aperture (at least 5″) to be observed. In addition, the focal ratio of f/14 is not conducive for viewing at low magnification which is the appropriate magnification for observing dim objects. • What is focal length? Focal length of a telescope is the distance from the primary mirror or objective to the eyepiece. • How are eyepieces classified by their magnifications? The higher the number (focal length) of the eyepiece, the lower its magnification is. Similarly, the lower the number of the eyepiece, the higher its magnification is. For example, a 6mm eyepiece has higher magnification than a 32mm eyepiece. • What does apparent field of a telescope refer to? The apparent field of view is the angular diameter (in degrees) of the circle of light that the eye sees. All Celestron Plossl eyepieces have excellent apparent fields (46 to 52 degrees). Meade eyepieces such as the Wide Angle, S
