The Young Exoplanet Transit Initiative (YETI)
... and transit techniques are also biased towards close-in planets, while direct imaging is biased towards wide separations. The RV technique has led to the discovery of ∼500 planet candidates, of which some 20 % are confirmed by either the astrometry or transit technique (see e.g. exoplanet.eu for upd ...
... and transit techniques are also biased towards close-in planets, while direct imaging is biased towards wide separations. The RV technique has led to the discovery of ∼500 planet candidates, of which some 20 % are confirmed by either the astrometry or transit technique (see e.g. exoplanet.eu for upd ...
A CCD BASED CURVATURE WAVEFRONT SENSOR FOR
... MAD's mission is to demonstrate the feasibility of Multi-Conjugate Adaptive Optics (MCAO) on the sky as a pre-requisite for the 100-m OWL telescope as well as several 2nd Generation VLT Instruments. It aims at comparing the relative merits of different methods and, therefore, employs alternatively m ...
... MAD's mission is to demonstrate the feasibility of Multi-Conjugate Adaptive Optics (MCAO) on the sky as a pre-requisite for the 100-m OWL telescope as well as several 2nd Generation VLT Instruments. It aims at comparing the relative merits of different methods and, therefore, employs alternatively m ...
2006 04 LAAS Bulletin I.pub
... Note: There is a scratch in the coating of the primary that does not affect performance. The mirror was inspected from the rear to verify that the scratch did not extend to the glass. Asking $175 (proceeds go to the LAAS). Contact Dave Sovereign at (626) 794 – 0646 The LAAS Board of Directors woul ...
... Note: There is a scratch in the coating of the primary that does not affect performance. The mirror was inspected from the rear to verify that the scratch did not extend to the glass. Asking $175 (proceeds go to the LAAS). Contact Dave Sovereign at (626) 794 – 0646 The LAAS Board of Directors woul ...
High Homogeneous Large Optical Glass Blanks
... inspection size and the speed of imaging. Such an approach gives a good price performance ratio. It offers wide capabilities of checking any kind of optical flat components from small to large sizes. A stitching system, based on a commercial Twyman-Green phase-shifting 300 mm aperture interferometer, ...
... inspection size and the speed of imaging. Such an approach gives a good price performance ratio. It offers wide capabilities of checking any kind of optical flat components from small to large sizes. A stitching system, based on a commercial Twyman-Green phase-shifting 300 mm aperture interferometer, ...
Understanding the concept of resolving power in the Fabry–Perot
... such as Born and Wolf [1] and Hecht [2] use Rayleigh’s criterion [6]. It was first introduced by Lord Rayleigh in 1879 to determine whether two diffraction spots can be distinguished or not. The criterion states that two intensity maxima are separated if the maximum value of the first spot is superi ...
... such as Born and Wolf [1] and Hecht [2] use Rayleigh’s criterion [6]. It was first introduced by Lord Rayleigh in 1879 to determine whether two diffraction spots can be distinguished or not. The criterion states that two intensity maxima are separated if the maximum value of the first spot is superi ...
Diapositiva 1 - tls
... Changing the image slicer by a single “long slit” (0.175”x 1.837”). We leave room to allocate a third prism in the cross dispersion unit. •EXPECTED PERFORMANCES ARE STILL TO BE EVALUATED The single object will cover an area about (0.175”x0.175”) against the 0.525”x0.615” of the seeing limited ape ...
... Changing the image slicer by a single “long slit” (0.175”x 1.837”). We leave room to allocate a third prism in the cross dispersion unit. •EXPECTED PERFORMANCES ARE STILL TO BE EVALUATED The single object will cover an area about (0.175”x0.175”) against the 0.525”x0.615” of the seeing limited ape ...
Fermi Fact Sheet - Fermi Gamma-ray Space Telescope
... In distant regions of space, supermassive black holes eject streams of gamma-ray producing matter stretching many thousands of light-years. Gamma-ray bursts, the most energetic explosions in the universe, release more energy in a moment than our Sun emits in 10 billion years. Theory suggests that ga ...
... In distant regions of space, supermassive black holes eject streams of gamma-ray producing matter stretching many thousands of light-years. Gamma-ray bursts, the most energetic explosions in the universe, release more energy in a moment than our Sun emits in 10 billion years. Theory suggests that ga ...
MS-Word format - Eyes-on-the
... of the basics, and reward the amateur with a capable instrument at a fraction of the cost of an equivalent commercial system. If a binocular lens (or small parabolic mirror) and a small first surface mirror are already available, a spectroscope can be built for not much more than the cost of a diffr ...
... of the basics, and reward the amateur with a capable instrument at a fraction of the cost of an equivalent commercial system. If a binocular lens (or small parabolic mirror) and a small first surface mirror are already available, a spectroscope can be built for not much more than the cost of a diffr ...
Finishing an engineered lightweight 396mm CA, f1.376 concave
... variables are things seasoned opticians should have learned in their first few years of polishing on a daily basis. Yet the mysticism surrounding lightweight mirrors has persisted for nearly 100 years. What we’ve seen is that the machine and the tool influence the smoothness, figure, control and co ...
... variables are things seasoned opticians should have learned in their first few years of polishing on a daily basis. Yet the mysticism surrounding lightweight mirrors has persisted for nearly 100 years. What we’ve seen is that the machine and the tool influence the smoothness, figure, control and co ...
AstroMaster Series Telescopes
... Take time to read through this manual before embarking on your journey through the Universe. It may take a few observing sessions to become familiar with your telescope, so you should keep this manual handy until you have fully mastered your telescope’s operation. The manual gives detailed informati ...
... Take time to read through this manual before embarking on your journey through the Universe. It may take a few observing sessions to become familiar with your telescope, so you should keep this manual handy until you have fully mastered your telescope’s operation. The manual gives detailed informati ...
-200 0 200 -200 0 200 -200 0 200 ∆ T ( µ K ) -200
... average of the variances, σ s2 , is a measure of the noise on timescales corresponding to the integration time between telescope beamswitches, typically 10 - 40 seconds, and is dominated by instrument noise. A mean and variance are also calculated from the three 4beam values of ∆Tj at each sky posit ...
... average of the variances, σ s2 , is a measure of the noise on timescales corresponding to the integration time between telescope beamswitches, typically 10 - 40 seconds, and is dominated by instrument noise. A mean and variance are also calculated from the three 4beam values of ∆Tj at each sky posit ...
StarSense AutoAlign Manual
... StarSense™ is patented technology that allows your telescope to determine its position and align itself with the night sky automatically. StarSense AutoAlign’s internal camera captures an image of the sky, and then analyzes it to identify the stars in the image. Based on this information, StarSense ...
... StarSense™ is patented technology that allows your telescope to determine its position and align itself with the night sky automatically. StarSense AutoAlign’s internal camera captures an image of the sky, and then analyzes it to identify the stars in the image. Based on this information, StarSense ...
Full Presentation Here
... • Precise Measurement of the GRH lead to a new technique to measure m and – Independent from other techniques currently used. – No standard-candle ( but uniform and isotropic EBL ) – Active Galactic Nuclei highest observable redshift • The precision of this technique is dominated by the system ...
... • Precise Measurement of the GRH lead to a new technique to measure m and – Independent from other techniques currently used. – No standard-candle ( but uniform and isotropic EBL ) – Active Galactic Nuclei highest observable redshift • The precision of this technique is dominated by the system ...
Resume - Kahan - Synopsys` Optical Solutions Group
... of large optical systems in several arenas. For NASA this has included Lead Optical IRT Roles on Chandra/AXAF (including special work on Optical-Bench bakeout and Door/Dust-Cover stiction/creep), through Spitzer/SIRTF (with special Tiger Team roles in coating delamination studies and particulate imp ...
... of large optical systems in several arenas. For NASA this has included Lead Optical IRT Roles on Chandra/AXAF (including special work on Optical-Bench bakeout and Door/Dust-Cover stiction/creep), through Spitzer/SIRTF (with special Tiger Team roles in coating delamination studies and particulate imp ...
What is X-ray Astronomy? - High Energy Astrophysics
... X-ray Telescopes are different Chandra’s mirrors are almost cylinders X-rays don’t reflect off a normal mirror – they get absorbed. Only by striking a mirror at a glancing angle, about 1o, do X-rays reflect. Then they act like visible light and can be focused ...
... X-ray Telescopes are different Chandra’s mirrors are almost cylinders X-rays don’t reflect off a normal mirror – they get absorbed. Only by striking a mirror at a glancing angle, about 1o, do X-rays reflect. Then they act like visible light and can be focused ...
スライド タイトルなし - X-ray Astronomy Group at ISAS
... Spectrometer (XRS); the other modules (XRT-I) have X-ray Imaging Spectrometer (XIS) units at their focal planes. At the same time, the Hard X-ray Detector (HXD) measures highenergy (hard) X-rays. ...
... Spectrometer (XRS); the other modules (XRT-I) have X-ray Imaging Spectrometer (XIS) units at their focal planes. At the same time, the Hard X-ray Detector (HXD) measures highenergy (hard) X-rays. ...
11Oct2004 - Division of Geological and Planetary Sciences
... •HST resolution at 1mm D=10 km! Use array. •Can’t directly process 100 – 1000 GHz signals. •Heterodyne receivers detect |V| and f, noise defined by the quantum limit of hn/k. •Positional information is carried by the PHASE. •Spectral coverage depends on the receivers, while the kinematic resolution ...
... •HST resolution at 1mm D=10 km! Use array. •Can’t directly process 100 – 1000 GHz signals. •Heterodyne receivers detect |V| and f, noise defined by the quantum limit of hn/k. •Positional information is carried by the PHASE. •Spectral coverage depends on the receivers, while the kinematic resolution ...
3.2 Multi-Conjugate Adaptive Optics
... The Gemini telescopes will have a minimum usable primary mirror diameter of 8.0 meters. Image Quality of better than 0.1 arcsec with AO Achievement of outstanding image quality will have the highest scientific priority for the project. The intent is that the Gemini telescopes will achieve image qual ...
... The Gemini telescopes will have a minimum usable primary mirror diameter of 8.0 meters. Image Quality of better than 0.1 arcsec with AO Achievement of outstanding image quality will have the highest scientific priority for the project. The intent is that the Gemini telescopes will achieve image qual ...
5 - nptel
... separation of the nearest line. Equation 4 can be used to measure the resolving power of a grating experimentally. Procedure: 1. In the above experiment replace the mercury lamp with the sodium lamp and do the alignment fro the grating as described above. 2. Set the grating for first order for the s ...
... separation of the nearest line. Equation 4 can be used to measure the resolving power of a grating experimentally. Procedure: 1. In the above experiment replace the mercury lamp with the sodium lamp and do the alignment fro the grating as described above. 2. Set the grating for first order for the s ...
Scattered Light in a DMD based Multi-Object Spectrometer
... light. The DMD mirrors are made in a semiconductor process, and thin film properties become very important. The DMDs are packaged at TI with a transparent window ahead of the DMD for protection. The window was removed from a non-functioning DMD of the same model as the DMD under test. A Veeco Wyko N ...
... light. The DMD mirrors are made in a semiconductor process, and thin film properties become very important. The DMDs are packaged at TI with a transparent window ahead of the DMD for protection. The window was removed from a non-functioning DMD of the same model as the DMD under test. A Veeco Wyko N ...
Very Large Telescope
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The Very Large Telescope (VLT) is a telescope operated by the European Southern Observatory on Cerro Paranal in the Atacama Desert of northern Chile. The VLT consists of four individual telescopes, each with a primary mirror 8.2 m across, which are generally used separately but can be used together to achieve very high angular resolution. The four separate optical telescopes are known as Antu, Kueyen, Melipal and Yepun, which are all words for astronomical objects in the Mapuche language. The telescopes form an array which is complemented by four movable Auxiliary Telescopes (ATs) of 1.8 m aperture.The VLT operates at visible and infrared wavelengths. Each individual telescope can detect objects roughly four billion times fainter than can be detected with the naked eye, and when all the telescopes are combined, the facility can achieve an angular resolution of about 0.001 arc-second (This is equivalent to roughly 2 meters resolution at the distance of the Moon).In single telescope mode of operation angular resolution is about 0.05 arc-second.The VLT is the most productive ground-based facility for astronomy, with only the Hubble Space Telescope generating more scientific papers among facilities operating at visible wavelengths. Among the pioneering observations carried out using the VLT are the first direct image of an exoplanet, the tracking of individual stars moving around the supermassive black hole at the centre of the Milky Way, and observations of the afterglow of the furthest known gamma-ray burst.