Lenses and Waves: Christiaan Huygens and the Mathematical
... a comprehensive theory of the dioptrical properties of lenses and their configurations in telescopes, that goes by the title of Dioptrica. A second surprise is in store when one takes a closer looks to these papers on geometrical optics. The papers on dioptrics cover the Huygens’ complete scientific ...
... a comprehensive theory of the dioptrical properties of lenses and their configurations in telescopes, that goes by the title of Dioptrica. A second surprise is in store when one takes a closer looks to these papers on geometrical optics. The papers on dioptrics cover the Huygens’ complete scientific ...
FY12 - National Optical Astronomy Observatory
... achieved first light at the CTIO Blanco 4-m telescope. Almost simultaneously, the partially filled One Degree Imager (pODI) also was successfully installed and achieved first light at the Wisconsin-IndianaYale-NOAO (WIYN) 3.5-m telescope on Kitt Peak. The NOAO-built ground-layer adaptive optics imag ...
... achieved first light at the CTIO Blanco 4-m telescope. Almost simultaneously, the partially filled One Degree Imager (pODI) also was successfully installed and achieved first light at the Wisconsin-IndianaYale-NOAO (WIYN) 3.5-m telescope on Kitt Peak. The NOAO-built ground-layer adaptive optics imag ...
optical alignment with cgh phase references
... measurements and adjustments accomplish an alignment to specified tolerances. Some alignment tools are well-suited for measuring optical surfaces directly. An alignment telescope is useful to align a spherical surface center of curvature along a line of sight. These instruments may also be used to v ...
... measurements and adjustments accomplish an alignment to specified tolerances. Some alignment tools are well-suited for measuring optical surfaces directly. An alignment telescope is useful to align a spherical surface center of curvature along a line of sight. These instruments may also be used to v ...
Optical Shop Testing
... No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, scanning, or otherwise, except as permitted under Section 107 or 108 of the 1976 United States Copyright Act, without either the p ...
... No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, scanning, or otherwise, except as permitted under Section 107 or 108 of the 1976 United States Copyright Act, without either the p ...
PPT - MagellanTech
... was that the focus variations (especially of the outer 4 segments) are in the direction of “two short a path length” compared to most of the slices. It is likely that this is due to ~10% radius of curvature errors in the most difficult slicing mirrors. Z-MAX was used to investigate the best way to f ...
... was that the focus variations (especially of the outer 4 segments) are in the direction of “two short a path length” compared to most of the slices. It is likely that this is due to ~10% radius of curvature errors in the most difficult slicing mirrors. Z-MAX was used to investigate the best way to f ...
dynamic microscope with combined optical focus and aberrational
... beam to the focusable telescope optical system and said focusable telescope optical system is able to receive said infinity beam and impart focal change to the objective lens system. In one embodiment, the common moveable or deformable rear lens system is a common moveable rear lens system. In anoth ...
... beam to the focusable telescope optical system and said focusable telescope optical system is able to receive said infinity beam and impart focal change to the objective lens system. In one embodiment, the common moveable or deformable rear lens system is a common moveable rear lens system. In anoth ...
2. Adaptive Optical Microscopy using Direct Wavefront Sensing 2.1
... wavefront measurement. Here light from a point source in the specimen is used to measure the wavefront with a detector such as a Shack-Hartmann wavefront sensor, similar to the approach that is used in astronomy. The benefit of direct wavefront measurement relative to the sensorless methods discusse ...
... wavefront measurement. Here light from a point source in the specimen is used to measure the wavefront with a detector such as a Shack-Hartmann wavefront sensor, similar to the approach that is used in astronomy. The benefit of direct wavefront measurement relative to the sensorless methods discusse ...
The Pupil mapping Exoplanet Coronagraphic Observer
... PECO spends long periods of time looking at a small number of targets with a very stable telescope (highly stable PSF) ...
... PECO spends long periods of time looking at a small number of targets with a very stable telescope (highly stable PSF) ...
PDF
... with you. The first announcement was of six new extrasolar planets, five of which were the first discovered via transit observations from the Kepler space telescope and then verified and studied in depth with precision radial velocities from the Keck I telescope and its High Resolution Echelle Spect ...
... with you. The first announcement was of six new extrasolar planets, five of which were the first discovered via transit observations from the Kepler space telescope and then verified and studied in depth with precision radial velocities from the Keck I telescope and its High Resolution Echelle Spect ...
3 LGS WFS Support Structure - Caltech Optical Observatories
... The LGS WFS subsystem design for NGAO has evolved considerably from the design presented at the NGAO System Design Review (SDR), driven primarily with the requirements and architecture changes flowing from Build-to-Cost (B2C) exercise (KAON 642). Most importantly, the original 5″ – 50″ radially scal ...
... The LGS WFS subsystem design for NGAO has evolved considerably from the design presented at the NGAO System Design Review (SDR), driven primarily with the requirements and architecture changes flowing from Build-to-Cost (B2C) exercise (KAON 642). Most importantly, the original 5″ – 50″ radially scal ...
Diffraction Limited Astronomical Imaging Through the Atmosphere
... lenses could be figured. The development of reflecting telescopes by James Gregory and Isaac Newton lead to a rapid increase in the resolution available to astronomers. With the work of Thomas Young in the 19th Century, astronomers realised that the resolution of their telescopes was limited by the ...
... lenses could be figured. The development of reflecting telescopes by James Gregory and Isaac Newton lead to a rapid increase in the resolution available to astronomers. With the work of Thomas Young in the 19th Century, astronomers realised that the resolution of their telescopes was limited by the ...
G030184-00 - DCC
... origin of the elements by nucleosynthesis and existence of relic light (cosmic microwave background) from era of atom formation » 1960’s First detection of relic light from early universe » 1990’s First images of early universe made with relic light » 2003 High-resolution images imply universe ...
... origin of the elements by nucleosynthesis and existence of relic light (cosmic microwave background) from era of atom formation » 1960’s First detection of relic light from early universe » 1990’s First images of early universe made with relic light » 2003 High-resolution images imply universe ...
CHANDRA X-ray Center Ping Zhao
... Aimpoint positions are measured on all four detectors as described in Section 4.1. The optical axis positions are measured only on HRC-I as described in Section 4.2. However, at any given time, the relative position between the aimpoint and optical axis is the intrinsic property of the HRMA and ACA, ...
... Aimpoint positions are measured on all four detectors as described in Section 4.1. The optical axis positions are measured only on HRC-I as described in Section 4.2. However, at any given time, the relative position between the aimpoint and optical axis is the intrinsic property of the HRMA and ACA, ...
SPIE Astronomical Telescopes and Instrumentation Technical
... ~0.6 to 5.0 micron and will be capable of obtaining spectra from more than a 100 objects simultaneously, as well as fixed slit high contrast spectroscopy of individual sources. It also features an integrated field unit for 3D spectroscopy. The key scientific objectives of the instrument include stud ...
... ~0.6 to 5.0 micron and will be capable of obtaining spectra from more than a 100 objects simultaneously, as well as fixed slit high contrast spectroscopy of individual sources. It also features an integrated field unit for 3D spectroscopy. The key scientific objectives of the instrument include stud ...
CHANDRA X-ray Center Ping Zhao
... positions are measured only on HRC-I as described in Section 4.2. However, at any given time, the relative position between the aimpoint and optical axis is the intrinsic property of the HRMA and ACA, independent of the detectors. One can therefore calculate the optical axis position on other detect ...
... positions are measured only on HRC-I as described in Section 4.2. However, at any given time, the relative position between the aimpoint and optical axis is the intrinsic property of the HRMA and ACA, independent of the detectors. One can therefore calculate the optical axis position on other detect ...
Marco Riva - ICT @ INAF
... location of the modules on the platform (Nasmith and Coudè) within the boundary defined by the fibers throughput. This means for example that the location of the different modules may also adapt with the development of the telescope. ...
... location of the modules on the platform (Nasmith and Coudè) within the boundary defined by the fibers throughput. This means for example that the location of the different modules may also adapt with the development of the telescope. ...
Surplus Shed – www.SurplusShed.com
... WWII 7X50 B&L COMPLETE BINOCULAR EYEPIECE KIT 9 original unused B&L pieces in all to make a replacement focusing eyepiece for your 7x50 binoculars! We know this will fit the Mark 28 and numerous others. You will receive the following: eyeguard, diopter retainer, diopter scale, focusing eyelens housi ...
... WWII 7X50 B&L COMPLETE BINOCULAR EYEPIECE KIT 9 original unused B&L pieces in all to make a replacement focusing eyepiece for your 7x50 binoculars! We know this will fit the Mark 28 and numerous others. You will receive the following: eyeguard, diopter retainer, diopter scale, focusing eyelens housi ...
versaScan - Spectra
... In case of a versaScan/BB skip chapter 6.1 and proceed with chapter 6.2. The laser back reflection protection (LBP) is not needed for the versaScan/BB. It is necessary for the versaScan/BB/HE and the versaScan/MB which are reflecting back some part of the 355 nm pump beam light. The LBP has to be in ...
... In case of a versaScan/BB skip chapter 6.1 and proceed with chapter 6.2. The laser back reflection protection (LBP) is not needed for the versaScan/BB. It is necessary for the versaScan/BB/HE and the versaScan/MB which are reflecting back some part of the 355 nm pump beam light. The LBP has to be in ...
Document
... which is less accurate and also it is not possible to measure vertical angles with a Compass. So when the objects are at a considerable distance or situated at a considerable elevation or depression ,it becomes necessary to measure horizontal and vertical angles more precisely. So these measurements ...
... which is less accurate and also it is not possible to measure vertical angles with a Compass. So when the objects are at a considerable distance or situated at a considerable elevation or depression ,it becomes necessary to measure horizontal and vertical angles more precisely. So these measurements ...
The Optical Cavity
... time. Remember that resonant coupling will only occur when at least one of the frequency components of the laser light matches at least one of the mode frequencies of the external cavity (which are changing in time due to mirror vibrations, etc.). Since resonant coupling of light into an external ca ...
... time. Remember that resonant coupling will only occur when at least one of the frequency components of the laser light matches at least one of the mode frequencies of the external cavity (which are changing in time due to mirror vibrations, etc.). Since resonant coupling of light into an external ca ...
Strehl ratio for primary aberrations: some analytical results for
... first kind.8 However, this series converges rapidly, and only a few terms need be considered for adequate precision. The Strehl ratio for classical astigmatism is derived in Appendix A as an example of the results given in Table 1. The results for curvature of field or defocus and distortion or tilt ...
... first kind.8 However, this series converges rapidly, and only a few terms need be considered for adequate precision. The Strehl ratio for classical astigmatism is derived in Appendix A as an example of the results given in Table 1. The results for curvature of field or defocus and distortion or tilt ...
Comets to Cosmology - Nrao - National Radio Astronomy Observatory
... varied series of programs. It has a collecting area and sensitivity comparable to the Atacama large millimeter/submillimeter Array (AlmA) and the Karl G. Jansky Very large Array (VlA) and thus excellent response to point sources such as pulsars. But as a filled aperture it also has the highest possi ...
... varied series of programs. It has a collecting area and sensitivity comparable to the Atacama large millimeter/submillimeter Array (AlmA) and the Karl G. Jansky Very large Array (VlA) and thus excellent response to point sources such as pulsars. But as a filled aperture it also has the highest possi ...
Lecture 4: Diffraction around an occulter
... • In reality, some fraction of the disk light is diffracted around the occulter edge and be reflected by the mirror, thus contaminating the coronal light. ...
... • In reality, some fraction of the disk light is diffracted around the occulter edge and be reflected by the mirror, thus contaminating the coronal light. ...
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.