Table of Contents
Can we use concave mirror for telescope?
The Reflecting Telescope or Reflector uses a concave mirror as the telescope’s Primary Objective, rather than a lens or lenses. The type of reflector depends on other system mirror(s), called the Secondary Mirror.
Which type of telescope can be made using a concave mirror?
(b) Cassegrain telescope In this telescope, the light rays after reflection from the concave mirror, are reflected back towards it by a small convex mirror. Then the rays pass through the eyepiece placed at the back of the concave mirror as shown. The eyepiece produces a magnified image of the source.
Why convex mirror is used in telescope?
A combination of concave and convex mirrors and lenses is used to collect a larger area of light and focus it onto a smaller, possibly brighter image surface. Concave mirrors in particular would be used in the collection and focus of the initial light received.
Which property of concave mirror is used in reflecting telescope?
Concave mirrors reflect light inward to one focal light. Therefore, they are mostly used to focus light. A concave mirror shows different image types depending on the distance between the mirror and the object….Used in solar furnaces.
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Which type of telescope can be made using concave convex and plane mirror?
Newtonian telescope This telescope basically consists of a concave mirror, plane mirror, and an eyepiece.
What is the use of convex mirror in Cassegrain telescope?
Before reaching the prime focus, the light rays are reflected again by a small convex mirror that brings them to a focus near a small hole in the centre of the main mirror.
Can I use magnifying glass for telescope?
To make a simple telescope at home, you will need the following: two magnifying glasses – perhaps 1 – 1.5 inches (2.5-3 cm) diameter (it works best if one is larger than the other) a cardboard tube – paper towel roll or gift-wrapping paper roll (it helps if it is long)
What two lenses are needed to make a telescope?
Two lenses are needed to build a telescope. We call these the “objective” lens and the “eyepiece” lens. The “Objective” lens should always be a convex lens. Convex lenses are thicker in the middle, and can be used as magnifying glasses or for concentrating sunlight.