FAQs
What is aperture of a telescope?
Aperture of a telescope refers to the diameter of the diameter of the objective lens (for refracting telescope) or the primary mirror (for reflecting
telescopes). The aperture of the telescope determines how light the telescope and observe hence how much detail you can see.
The rule of
thumb
: the bigger the aperture, the more detail you can see.
Should I choose the larger aperture?
Aperture of a telescope is what determines how much light can a telescope observe. The larger the aperture, the more light can be collected,
which results in greater image resolution. In short, with a telescope with a larger aperture, you can see more detail and better detail than the one
with a smaller aperture. However, the larger the aperture, the more expensive the telescope is.
How to calculate the magnification of a telescope?
The magnification of a telescope is equal to the
telescope’s
focal length divided by the
eyepiece’s
focal length. Focal length of a telescope and an
eyepiece can be found on the specification sheet, on our telescope, the two are actually printed onto the body of the OTA and the eyepieces for
easier access. For example, with a 20mm eyepiece, a 900mm OTA will give you 45X magnification; with a 10mm eyepiece, a 900mm OTA will give
you 90X magnification.
What does the number on an eyepiece mean?
The number on an eyepiece refers to the focal length of the eyepiece which is usually measured in millimeter (MM). For example, a 25mm
eyepiece has a focal distance of 25mm. The bigger the number, the longer the focal which results in a lower magnification.
Please DO NOT look at the Sun through your telescope without a proper filter. This may damage your eyes permanently.
