Transit light curve
... a transit light curve reveals the planet-to-star radius ratio k = Rp/R* ~ sqr d, but not the planetary radius, and says nothing about the planetary mass. the radial-velocity orbit of the host star, and in particular the velocity semi-amplitude K*. ...
... a transit light curve reveals the planet-to-star radius ratio k = Rp/R* ~ sqr d, but not the planetary radius, and says nothing about the planetary mass. the radial-velocity orbit of the host star, and in particular the velocity semi-amplitude K*. ...
doc - IRAM
... Antennas have good optical efficiency (40-50%) measured at 675 GHz NEP is good - optical measured is ~ 1e-15 W/rtHz with Ta Dark NEPs are down to 1e-18 W/rtHz Quasiparticle lifetimes will be limited by loading on the telescope Readout electronics - MPIfR working with up to 100 channels already Manpo ...
... Antennas have good optical efficiency (40-50%) measured at 675 GHz NEP is good - optical measured is ~ 1e-15 W/rtHz with Ta Dark NEPs are down to 1e-18 W/rtHz Quasiparticle lifetimes will be limited by loading on the telescope Readout electronics - MPIfR working with up to 100 channels already Manpo ...
Click here to get the file
... Part of their intent was to point out ways to improve the SGRA and Smiley program. We list their major comments for improvement and changes as a result: ...
... Part of their intent was to point out ways to improve the SGRA and Smiley program. We list their major comments for improvement and changes as a result: ...
Principles of Physics
... A plane passing through either focal point of a lens that is perpendicular to the principal axis. For a converging lens, any incident parallel beam of light converges to a point somewhere on a focal plane. For a diverging lens, such a beam appears to come from a point on a focal plane.(pg. 464) ...
... A plane passing through either focal point of a lens that is perpendicular to the principal axis. For a converging lens, any incident parallel beam of light converges to a point somewhere on a focal plane. For a diverging lens, such a beam appears to come from a point on a focal plane.(pg. 464) ...
Invited Paper - Giant Magellan Telescope Organization
... below and elsewhere in these proceedings, we are progressing through the final design and prototyping of the GMT adaptive mirrors. The use of small secondary mirrors paired to each primary mirror results in a double-segmented optical system for the GMT. This eases manufacturing and handling and prov ...
... below and elsewhere in these proceedings, we are progressing through the final design and prototyping of the GMT adaptive mirrors. The use of small secondary mirrors paired to each primary mirror results in a double-segmented optical system for the GMT. This eases manufacturing and handling and prov ...
VLT DSM, the control system of the largest deformable
... VLT experimental tests have been wholly carried out by exploiting the dedicated electronics developed for the control of the secondary adaptive mirror. The decentralized FB and the FF contributions are implemented through a hard-real time code, partly on the DSPs (see Sec. 2) and partly through the ...
... VLT experimental tests have been wholly carried out by exploiting the dedicated electronics developed for the control of the secondary adaptive mirror. The decentralized FB and the FF contributions are implemented through a hard-real time code, partly on the DSPs (see Sec. 2) and partly through the ...
Beam Splitters A beam splitter is a device that`s used to divide an
... that have a higher reflectance than any metal can be produced. These surfaces generally are composed of several dielectric materials and use the principle of interference to produce high reflectance values. Notice that reflectances very near to 100% can be achieved by this method. Consider Figure 1 ...
... that have a higher reflectance than any metal can be produced. These surfaces generally are composed of several dielectric materials and use the principle of interference to produce high reflectance values. Notice that reflectances very near to 100% can be achieved by this method. Consider Figure 1 ...
Ronald`s presentation
... new technology development Use identical cord fold deployment & sunshield architecture and technology ...
... new technology development Use identical cord fold deployment & sunshield architecture and technology ...
Light Pollution and the IES
... Tell us IDA people what we can do to bring about change—you know the business! Join the IDA and learn about the dark sky movement. (I joined the IES!) ...
... Tell us IDA people what we can do to bring about change—you know the business! Join the IDA and learn about the dark sky movement. (I joined the IES!) ...
Problem Statement
... reflected from the center of a mirror focuses at a different point than light reflected from the edges. In order to understand the causes of the spherical aberration in the HST, a brief description of how the telescope works is in order. The HST is a 2.4 m Ritchey-Chretien telescope with a focal rat ...
... reflected from the center of a mirror focuses at a different point than light reflected from the edges. In order to understand the causes of the spherical aberration in the HST, a brief description of how the telescope works is in order. The HST is a 2.4 m Ritchey-Chretien telescope with a focal rat ...
m illikan`s o il d rop
... Reverse the polarity of the plates a couple of times using the switch on the front of the transformer. This will cause the fast moving particles to move from the field of view. Concentrating on one of the slowly moving particles, adjust the voltage until the particle stops moving. Record the voltage ...
... Reverse the polarity of the plates a couple of times using the switch on the front of the transformer. This will cause the fast moving particles to move from the field of view. Concentrating on one of the slowly moving particles, adjust the voltage until the particle stops moving. Record the voltage ...
3.4 Why compasses don`t point north
... the computer that each star is centered, without looking to see whether it really is. Zero-star alignment is sometimes useful for observing planets in the daytime but not much else. Expect pointing errors of several degrees until you can find bright stars or planets and sync on them. First-magnitude ...
... the computer that each star is centered, without looking to see whether it really is. Zero-star alignment is sometimes useful for observing planets in the daytime but not much else. Expect pointing errors of several degrees until you can find bright stars or planets and sync on them. First-magnitude ...
Lecture 22 - Louisiana State University
... The human eye consists of a variable-geometry lens (crystalline) which produces a real image on a “screen” (retina) which is transmitted to the brain via the optical nerve. The cristalline automatically adjusts itself so we see well any object placed between infinity and a distance called “near poin ...
... The human eye consists of a variable-geometry lens (crystalline) which produces a real image on a “screen” (retina) which is transmitted to the brain via the optical nerve. The cristalline automatically adjusts itself so we see well any object placed between infinity and a distance called “near poin ...
up11_educue_ch34
... a converging eyeglass lens is used to correct this condition 2. the image point is in front of the retina; a diverging eyeglass lens is used to correct this condition 3. the image point is behind the retina; a converging eyeglass lens is used to correct this condition 4. the image point is behind th ...
... a converging eyeglass lens is used to correct this condition 2. the image point is in front of the retina; a diverging eyeglass lens is used to correct this condition 3. the image point is behind the retina; a converging eyeglass lens is used to correct this condition 4. the image point is behind th ...
Optical Set-Up and Design for Solar Multi-conjugate
... delivering high performances over the 1 arcmin FoV. This design proposes the use of a wide field WFSs based on a Shack-Hartman WFS handling both low order and high order at the same time. This approach is very similar to nightime MCAO approach but differs significantly from recent solar system desig ...
... delivering high performances over the 1 arcmin FoV. This design proposes the use of a wide field WFSs based on a Shack-Hartman WFS handling both low order and high order at the same time. This approach is very similar to nightime MCAO approach but differs significantly from recent solar system desig ...
THE LAS CAMPANAS INFRARED SURVEY CAMERA S. E. Persson
... Recent rapid improvement in the quality and size of nearinfrared imaging array detectors has led to great advances in many areas of astronomy, and the time is opportune to apply them to ambitious surveys. The camera described in this paper has been developed for the purpose of conducting deep (Ks ...
... Recent rapid improvement in the quality and size of nearinfrared imaging array detectors has led to great advances in many areas of astronomy, and the time is opportune to apply them to ambitious surveys. The camera described in this paper has been developed for the purpose of conducting deep (Ks ...
Lecture 25: Optical Instruments
... The ability of an optical system such as the eye, a microscope, or a telescope to distinguish between closely spaced objects is limited because of wave nature of light. - Light from two independent sources which are not coherent. - If the angle subtended by the sources at the aperture is large enoug ...
... The ability of an optical system such as the eye, a microscope, or a telescope to distinguish between closely spaced objects is limited because of wave nature of light. - Light from two independent sources which are not coherent. - If the angle subtended by the sources at the aperture is large enoug ...
An Overview of Wide-Field-Of-View
... Wide-field astronomical sky survey work dates back to the mid 1840s, shortly after the invention of photography [1]. Early survey instruments were nothing more than cameras and the optics were early camera lenses. Some of the better known optics were made by Voigtlander and Petzval [2]. As the techn ...
... Wide-field astronomical sky survey work dates back to the mid 1840s, shortly after the invention of photography [1]. Early survey instruments were nothing more than cameras and the optics were early camera lenses. Some of the better known optics were made by Voigtlander and Petzval [2]. As the techn ...
SST-GATE: An Innovative Telescope for the Very High
... and many tens of small-size telescopes (SSTs), of D-C or S-C design, will cover the highest energies up to 100 TeV. Cherenkov telescopes operate generally in a photon starved regime. To avoid contamination of the air shower image with the night sky background, the exposure must match the duration of ...
... and many tens of small-size telescopes (SSTs), of D-C or S-C design, will cover the highest energies up to 100 TeV. Cherenkov telescopes operate generally in a photon starved regime. To avoid contamination of the air shower image with the night sky background, the exposure must match the duration of ...
Progress of LiJET and Transit Search with Lijiang 2.4m Telescope
... with different rotation velocity Peng, Fleming et al. 2009 ...
... with different rotation velocity Peng, Fleming et al. 2009 ...
Introduction to Optical Engineering and Design ENSC 376
... Optical Engineering is the study of the how optical elements can be applied to the design and construction of optical instruments, and their application to practical engineering problems. The course concentrates on the practical application of optics, and less on the physics behind the behaviour. It ...
... Optical Engineering is the study of the how optical elements can be applied to the design and construction of optical instruments, and their application to practical engineering problems. The course concentrates on the practical application of optics, and less on the physics behind the behaviour. It ...
Using Mirrors to Form Images
... A convex mirror is a mirror that curves outwards. Convex mirrors also reflect light rays to form an image, but they do so in an opposite way to concave mirrors. A convex mirror reflects parallel light rays as if they came from a focal point behind the mirror (see Figure 5.20). Light rays that spread ...
... A convex mirror is a mirror that curves outwards. Convex mirrors also reflect light rays to form an image, but they do so in an opposite way to concave mirrors. A convex mirror reflects parallel light rays as if they came from a focal point behind the mirror (see Figure 5.20). Light rays that spread ...
Topic 1 notes - WordPress.com
... into the tube (no refraction) where they hit a flat secondary mirror o The image is subsequently focused inside the tube o The eyepiece lens then magnifies the image Comparison with refracting telescopes: o The concept of focusing the image inside tube and then magnifying it using the eyepiece lens ...
... into the tube (no refraction) where they hit a flat secondary mirror o The image is subsequently focused inside the tube o The eyepiece lens then magnifies the image Comparison with refracting telescopes: o The concept of focusing the image inside tube and then magnifying it using the eyepiece lens ...
Optical telescope for the ARIES21
... Prior to mounting the telescope at the subreflector, some works had to be done inside the subreflector cabin to accomodate free space to house the telescope. This involved moving cables and a power distribution box inside the cabin and also moving one of the locks that keep close the subreflector ca ...
... Prior to mounting the telescope at the subreflector, some works had to be done inside the subreflector cabin to accomodate free space to house the telescope. This involved moving cables and a power distribution box inside the cabin and also moving one of the locks that keep close the subreflector ca ...
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.