0
What telescope design has a hole in the center of the main mirror?
Wiki User
∙ 14y ago
That's the "Cassegrain". The prime focus and eyepiece are out the back, even though
it's a reflector.
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
What type of telescope is the hubble telescope?
The Hubble telescope was a basic reflector telescope with a 94.5 ft mirror. The Hubble collects light though its open end, the primary mirror reflects the light to a secondary mirror that then reflects the light through a hole in the primary mirror to a focal point of the instruments or eyes of the Hubble.
How many mirrors does a reflecting telescope have?
A reflecting telescope only needs one mirror, the primary mirror which will focus incoming light to a single point. A digital telescope might place the digital recording media directly in front of the reflecting telescope without any additional mirrors (although perhaps some lenses). For practical purposes though, most optical telescope will have a secondary mirror that will either focus light straight back through a hole in the primary telescope mirror, or to the side of the telescope. Some telescopes, especially the large ones in observatories will have several mirrors directing the light path to the observer or recording equipment.
What is a reflecting telescope that used a secondary mirror to send light through a hole in the primary mirror is called?
It is called a Cassegrain. The small convex subreflector is a hyperboloid with one focus at the focus of the main mirror, and the other focus just behind the main mirror where the eyepiece is.
Which telescope has discovered a remnant of a black hole at the center of the Milky Way Galaxy?
It's not a "remnant" of a black hole; there is a black hole at the center of the Milky Way, period. And as far as I know it wasn't discovered by any single telescope; rather, it has been observed over several years, with different instruments, and scientists have come to the conclusion (based on such observations) that the only explanation for what they observed is a black hole.
Are the Casseragrain and the relfecting telescopes the same type of telescope?
The Cassegrain has a hole in the mirror, at the bottom of the scope, where the reflector mirror reflects the light onto the viewing piece. So, the Cassegrain is a reflection telescope but it's primary and secondary mirrors work a bit differently than most reflecting telescopes.
At the end of the reflecting telescope is a?
A hole at one end, a mirror at the other.
What reflecting telescope has a focus which results from a single secondary mirror and which forms through a hole in the primary mirror?
are you doing your science homework?
What type of telescope is the hubble telescope?
The Hubble telescope was a basic reflector telescope with a 94.5 ft mirror. The Hubble collects light though its open end, the primary mirror reflects the light to a secondary mirror that then reflects the light through a hole in the primary mirror to a focal point of the instruments or eyes of the Hubble.
How many mirrors does a reflecting telescope have?
A reflecting telescope only needs one mirror, the primary mirror which will focus incoming light to a single point. A digital telescope might place the digital recording media directly in front of the reflecting telescope without any additional mirrors (although perhaps some lenses). For practical purposes though, most optical telescope will have a secondary mirror that will either focus light straight back through a hole in the primary telescope mirror, or to the side of the telescope. Some telescopes, especially the large ones in observatories will have several mirrors directing the light path to the observer or recording equipment.
What is a reflecting telescope that used a secondary mirror to send light through a hole in the primary mirror is called?
It is called a Cassegrain. The small convex subreflector is a hyperboloid with one focus at the focus of the main mirror, and the other focus just behind the main mirror where the eyepiece is.
Which telescope has discovered a remnant of a black hole at the center of the Milky Way Galaxy?
It's not a "remnant" of a black hole; there is a black hole at the center of the Milky Way, period. And as far as I know it wasn't discovered by any single telescope; rather, it has been observed over several years, with different instruments, and scientists have come to the conclusion (based on such observations) that the only explanation for what they observed is a black hole.
Are the Casseragrain and the relfecting telescopes the same type of telescope?
The Cassegrain has a hole in the mirror, at the bottom of the scope, where the reflector mirror reflects the light onto the viewing piece. So, the Cassegrain is a reflection telescope but it's primary and secondary mirrors work a bit differently than most reflecting telescopes.
Meaning of aperture in spherical mirror?
Mirror reflect the light that enters into it. The plane surface area of the mirror through which the light rays enter is called aperture. If we place some opaque object with hole in its center , in-front of the mirror now light can enter only through this hole. Now the aperture of the mirror is reduced.
Are there any problems in using a Reflector Telescope?
Generally instead of looking along the axis of the telescope as is done with a refractor sighting the object to view is more difficult since you view the eyepiece at right angles to the main axis of the reflector. The main way to overcome this is to make a hole in the centre of the mirror as is done in the Hubble telescope and view the image from behind the mirror. This is called a Cassegrain configuration.
Two types of mirrors found in an astronomical telescope?
Reflecting telescopes are clearer according to scientists. These are the ones with mirrors. You could use a bunch of mirrors and reflect them to the same destination and procure an excellent picture.
Who made the cassegrain telescope?
The Cassegrain reflector is a folded optics design, using two mirrors to fold the light path back on itself. This increases the focal length of the telescope, without increasing it's length. By doing so you can compact a more powerful telescope into a smaller frame, which has advantages for small amateur scopes (portability) and large professional ones (reduced cost). First developed in 1672 by Laurent Cassegrain, this reflector is a combination of a primary concave mirror and a secondary convex mirror, both aligned symmetrically about the optical axis. The primary mirror usually contains a hole in the centre thus permitting the light to reach an eyepiece, a camera, or a light detector. The primary mirror is parabolic while the secondary mirror is hyperbolic. Of the three basic types of telescopes: refractors, reflectors and catadioptrics, the Cassegrain reflector falls under the categories of reflecting and Catadioptric designs.
How are Newtonian and Cassegrain reflectors different?
Newtonian reflector:After light hits the main mirror, proceeds back up the tube and hits a secondary mirrorsuspended in the middle of the tube, the secondary mirror directs it to the side, whereit exits through a hole in the side of the tube. The camera or eyepiece is mounted onthe side.Cassegrain reflector:After light hits the main mirror, proceeds back up the tube and hits a secondary mirrorsuspended in the middle of the tube, the secondary mirror directs it back down to thebottom of the tube again, where it exits through a hole in the center of the main mirror.The camera or eyepiece is mounted at the bottom of the tube, making it look just like arefracting telescope.
