SALT/SAAO introduction
... follows the target, as the Earth rotates, for up to ~2.5 hours. The telescope can be moved from one object to another in < 5 min. Optical fibres can relay light from several objects (10-20) in the field to instruments in the the basement. The tracker will consist of a Prime Focus Instrument Platform ...
... follows the target, as the Earth rotates, for up to ~2.5 hours. The telescope can be moved from one object to another in < 5 min. Optical fibres can relay light from several objects (10-20) in the field to instruments in the the basement. The tracker will consist of a Prime Focus Instrument Platform ...
Tools of Astronomy Notes
... collects incoming radio or microwave radiation and focuses it onto a sensitive receiver located behind or below the antenna. Inside the receiver, the incoming waves are converted into electrical signals. Computers then process those signals to form images of the sky as it would look if our eyes were ...
... collects incoming radio or microwave radiation and focuses it onto a sensitive receiver located behind or below the antenna. Inside the receiver, the incoming waves are converted into electrical signals. Computers then process those signals to form images of the sky as it would look if our eyes were ...
Optical Discussion Summary
... and innovation, new technology, and thereby maintaining Australia’s expertise and training in instrumentation. There needs to be diversity in the sense that both ‘general user’ telescopes as well as ‘specialist/niche’ telescopes built to conduct a specific science experiment are supported; it was ac ...
... and innovation, new technology, and thereby maintaining Australia’s expertise and training in instrumentation. There needs to be diversity in the sense that both ‘general user’ telescopes as well as ‘specialist/niche’ telescopes built to conduct a specific science experiment are supported; it was ac ...
Chapter Six: Astronomical Tools
... 4) Why have no large refracting telescopes been built in the years since 1900? a. refracting telescopes suffer from chromatic aberration b. making large glass lenses without interior defects is difficult c. refracting telescopes have several surfaces to shape and polish d. large glass lenses are mor ...
... 4) Why have no large refracting telescopes been built in the years since 1900? a. refracting telescopes suffer from chromatic aberration b. making large glass lenses without interior defects is difficult c. refracting telescopes have several surfaces to shape and polish d. large glass lenses are mor ...
An upgraded classic - Astronomy Magazine
... the observer’s latitude to be set with an indicator on the side at the pivot. Next, the polar axis of the equatorial head must be aimed northward, as close to the north celestial pole (near the North Star, or Polaris) as possible. Opposing thumbscrews can be used for fine adjustments to align the mo ...
... the observer’s latitude to be set with an indicator on the side at the pivot. Next, the polar axis of the equatorial head must be aimed northward, as close to the north celestial pole (near the North Star, or Polaris) as possible. Opposing thumbscrews can be used for fine adjustments to align the mo ...
ATLAST 9.2: A Deployable Large Aperture UVOIR Space
... ground intervention. A schematic of one of the combined Fine guidance sensor (FGS) and WFS sensors is shown in Figure 1. Light from the OTA is fed to the FGS/WFS via a pick-off mirror. A bi-directional fine steering mirror (FSM) is used to access a 4’x4’ FOV and steer an isolated star onto the FGS/W ...
... ground intervention. A schematic of one of the combined Fine guidance sensor (FGS) and WFS sensors is shown in Figure 1. Light from the OTA is fed to the FGS/WFS via a pick-off mirror. A bi-directional fine steering mirror (FSM) is used to access a 4’x4’ FOV and steer an isolated star onto the FGS/W ...
Optical Design of Giant Telescopes for Space
... 3. THE CASE FOR MEMBRANE MIRRORS The assumption for the optical systems above is that they follow traditional optical designs. The telescope mirrors are curved according to the ideals for the conventional Cassegrain telescope. We now investigate a different scenario that allows the optical surface ...
... 3. THE CASE FOR MEMBRANE MIRRORS The assumption for the optical systems above is that they follow traditional optical designs. The telescope mirrors are curved according to the ideals for the conventional Cassegrain telescope. We now investigate a different scenario that allows the optical surface ...
File
... glass lens that magnifies the object. The tube holds the two lenses the correct distance from one another. The objective lens gathers light from an object, and bends it to a focal point near the back of the tube. The objective lens is convex, that is, wider in the middle than at the edges. The eyepi ...
... glass lens that magnifies the object. The tube holds the two lenses the correct distance from one another. The objective lens gathers light from an object, and bends it to a focal point near the back of the tube. The objective lens is convex, that is, wider in the middle than at the edges. The eyepi ...
Designed for portability and ease of use, this
... eyepiece and looking into the focuser revealed both mirrors were slightly out of collimation. Once they were aligned properly, image sharpness improved somewhat but still left something to be desired. Part of the problem lies with the ExploraScope’s inexpensive eyepiece, and the inverter lens in the ...
... eyepiece and looking into the focuser revealed both mirrors were slightly out of collimation. Once they were aligned properly, image sharpness improved somewhat but still left something to be desired. Part of the problem lies with the ExploraScope’s inexpensive eyepiece, and the inverter lens in the ...
Miss Nevoral - Ms. Nevoral`s site
... is a mirror that curves outwards. It reflects parallel light rays as if they came from the focal point the mirror. 9. The image of an object in a convex mirror will always be and from the mirror than the object. This image is considered to be what type of image, virtual or real? 10. When light rays ...
... is a mirror that curves outwards. It reflects parallel light rays as if they came from the focal point the mirror. 9. The image of an object in a convex mirror will always be and from the mirror than the object. This image is considered to be what type of image, virtual or real? 10. When light rays ...
Broad Sheet 7 - Museum of the History of Science
... their figuring and polishing skills could be transferred to metal mirrors, while at first the market for such telescopes must have seemed uncertain. ...
... their figuring and polishing skills could be transferred to metal mirrors, while at first the market for such telescopes must have seemed uncertain. ...
Physics 2
... We are using an electronic homework system from Mastering Physics (MP). All text based homework is to be downloaded from, solved, and the answers submitted on-line to www.masteringphysics.com . DRS problems will also be given out in class and will need to be turned in. Mastering Physics problem will ...
... We are using an electronic homework system from Mastering Physics (MP). All text based homework is to be downloaded from, solved, and the answers submitted on-line to www.masteringphysics.com . DRS problems will also be given out in class and will need to be turned in. Mastering Physics problem will ...
Estimating the Costs of Extremely Large Telescopes
... Key milestone: Baseline Design which will answer the following key design issues/trades ...
... Key milestone: Baseline Design which will answer the following key design issues/trades ...
Lecture17 - UMD Physics
... Zacharias Jansen, in Middleburg, Holland, around the year 1595. Since Zacharias was very young at that time, it's possible that his father Hans made the first one, but young Zach took over the production. Details about these first Jansen microscopes are not clear, but there is some evidence which al ...
... Zacharias Jansen, in Middleburg, Holland, around the year 1595. Since Zacharias was very young at that time, it's possible that his father Hans made the first one, but young Zach took over the production. Details about these first Jansen microscopes are not clear, but there is some evidence which al ...
Mirrors & Lenses
... lenses to gather and focus light from distant objects. • Refracting telescopes must have a very large, very heavy lens to see faraway stars & planets. – Reflecting telescopes use a concave mirror, a plane mirror and a convex lens to magnify distant objects. ...
... lenses to gather and focus light from distant objects. • Refracting telescopes must have a very large, very heavy lens to see faraway stars & planets. – Reflecting telescopes use a concave mirror, a plane mirror and a convex lens to magnify distant objects. ...
dobson space telescope the future of microsat based
... to fold the telescope during ascend and to unfold it for observation. For space Application there are three types of deployable telescopes. The most challenging ones have deployable mirrors [6] but the technology is not mature and very costly. Telescopes with deployable structures and without collim ...
... to fold the telescope during ascend and to unfold it for observation. For space Application there are three types of deployable telescopes. The most challenging ones have deployable mirrors [6] but the technology is not mature and very costly. Telescopes with deployable structures and without collim ...
Topic 3
... _________________ telescopes have been used for 400 years beginning with Dutch lens-grinding technology and Galileo’s first telescope observations in the 1600s. ...
... _________________ telescopes have been used for 400 years beginning with Dutch lens-grinding technology and Galileo’s first telescope observations in the 1600s. ...
High-Resolution Optical Spectrometer (HROS)
... doublet located at the output face of the image de-rotator. This pupil location can be utilized for filters, polarizers, and/or a small pickoff mirror that could send a small fraction of the light to a wavefront sensor. The pupil is followed by a dichroic beamsplitter that directs the light to the ...
... doublet located at the output face of the image de-rotator. This pupil location can be utilized for filters, polarizers, and/or a small pickoff mirror that could send a small fraction of the light to a wavefront sensor. The pupil is followed by a dichroic beamsplitter that directs the light to the ...
Success Criteria Optics
... (n=c/v) and use it to find the relative speed of light I know Snell’s law and can use it to solve refraction ...
... (n=c/v) and use it to find the relative speed of light I know Snell’s law and can use it to solve refraction ...
f - USP
... Main point of telescope: to gather more light than eye. Secondarily, to magnify image of the object ...
... Main point of telescope: to gather more light than eye. Secondarily, to magnify image of the object ...
SOAR Spartan Infrared Camera E. Loh, MSU, July 2014
... parabolas. The first mirror collimates the light emanating from its focus. The second mirror refocuses the light to form an image. By using an offaxis segment, the incoming and outgoing light beams do not interfere. There is a real image of the entrance pupil for the Lyot stop. This design also allo ...
... parabolas. The first mirror collimates the light emanating from its focus. The second mirror refocuses the light to form an image. By using an offaxis segment, the incoming and outgoing light beams do not interfere. There is a real image of the entrance pupil for the Lyot stop. This design also allo ...
Binoculars and Telescopes - Shreveport
... kind are four inches or less in diameter. Indeed, the refractor has the highest cost per inch of objective diameter of any amateur instrument. Another problem is that they do not gather much light. Most of them operate at around F 15 so that the image you see can be on the dim side. Therefore, they ...
... kind are four inches or less in diameter. Indeed, the refractor has the highest cost per inch of objective diameter of any amateur instrument. Another problem is that they do not gather much light. Most of them operate at around F 15 so that the image you see can be on the dim side. Therefore, they ...
PDF 9 - The Open University
... Unless otherwise stated, this resource is released under the terms of the Creative Commons Licence v4.0 http://creativecommons.org/licenses/by-nc-sa/4.0/deed.en_GB. Within that The Open University interprets this licence in the following way: www.open.edu/openlearn/about-openlearn/frequently-asked-q ...
... Unless otherwise stated, this resource is released under the terms of the Creative Commons Licence v4.0 http://creativecommons.org/licenses/by-nc-sa/4.0/deed.en_GB. Within that The Open University interprets this licence in the following way: www.open.edu/openlearn/about-openlearn/frequently-asked-q ...
Reflecting telescope
A reflecting telescope (also called a reflector) is an optical telescope which uses a single or combination of curved mirrors that reflect light and form an image. The reflecting telescope was invented in the 17th century as an alternative to the refracting telescope which, at that time, was a design that suffered from severe chromatic aberration. Although reflecting telescopes produce other types of optical aberrations, it is a design that allows for very large diameter objectives. Almost all of the major telescopes used in astronomy research are reflectors. Reflecting telescopes come in many design variations and may employ extra optical elements to improve image quality or place the image in a mechanically advantageous position. Since reflecting telescopes use mirrors, the design is sometimes referred to as a ""catoptric"" telescope.