A Bluetooth Telescope Controller - ATM
... These days, any off-the-shelf telescope with some self-esteem has a goto controller. Any Amateur Telescope Maker with as much self esteem would like to build such a controller himself. To realize this, he can base his project on a worked-out possibility available on the web. One of these systems is ...
... These days, any off-the-shelf telescope with some self-esteem has a goto controller. Any Amateur Telescope Maker with as much self esteem would like to build such a controller himself. To realize this, he can base his project on a worked-out possibility available on the web. One of these systems is ...
INJ_Genin - EGO-Virgo working area
... Measurement of faraday isolation change in air and in a vacuum tank up to 48 W. ...
... Measurement of faraday isolation change in air and in a vacuum tank up to 48 W. ...
Document
... • Like classical AO but more of the same • The wavefront error minimized on axis – Large number of degrees do freedom (i.e. +/- nb of actuators) of the deformable mirror. – Minimal lag (delay) in the control system – Low noise in the wavefront sensor: Bright guide star – “No” field of view – WFS non ...
... • Like classical AO but more of the same • The wavefront error minimized on axis – Large number of degrees do freedom (i.e. +/- nb of actuators) of the deformable mirror. – Minimal lag (delay) in the control system – Low noise in the wavefront sensor: Bright guide star – “No” field of view – WFS non ...
Remote sensing of extrasolar planets
... – For example, what is the role of NGS in high order MCAO? • Can lesser, but sufficient, sky coverage may be available with fewer (or even no) LGS beacons – Probability of finding N=5 guides stars of mV < 14 within 6 arcmin diameter is ~ 10% » Can MCAO be extended to exploit such large area? » What ...
... – For example, what is the role of NGS in high order MCAO? • Can lesser, but sufficient, sky coverage may be available with fewer (or even no) LGS beacons – Probability of finding N=5 guides stars of mV < 14 within 6 arcmin diameter is ~ 10% » Can MCAO be extended to exploit such large area? » What ...
Page 251 - eCM Journal
... elimination of coma is of great importance in high-resolution work. With increasing resolution, the effects of three-fold astigmatism and other axial aberrations grow also in importance. To reduce the effect of aberrations, methods for coma-free alignment of electron microscopes and accurate determi ...
... elimination of coma is of great importance in high-resolution work. With increasing resolution, the effects of three-fold astigmatism and other axial aberrations grow also in importance. To reduce the effect of aberrations, methods for coma-free alignment of electron microscopes and accurate determi ...
Measurements of large optical surfaces with a laser tracker
... Surface measurements represent a significant part of the cost for manufacturing large aspheric optics. Both polished and rough ground surfaces must be measured with high precision and spatial resolution. We have developed a system that couples a commercial laser tracker with an advanced calibration ...
... Surface measurements represent a significant part of the cost for manufacturing large aspheric optics. Both polished and rough ground surfaces must be measured with high precision and spatial resolution. We have developed a system that couples a commercial laser tracker with an advanced calibration ...
Design, fabrication, and open-loop control of micro deformable mirrors for Contents
... These new instruments offer the potential to greatly advance astronomical science, but each requires DMs that improve upon those currently used in astronomical telescopes. Such DMs are now available as a result of our work at Boston University and Boston Micromachines Corporation. • MOAO requires o ...
... These new instruments offer the potential to greatly advance astronomical science, but each requires DMs that improve upon those currently used in astronomical telescopes. Such DMs are now available as a result of our work at Boston University and Boston Micromachines Corporation. • MOAO requires o ...
Use of a commercial laser tracker for optical alignment
... can be quite challenging to align, as there is no well defined axis and optical distances are hard to define. Since the laser tracker measures coordinates optically, it works very well for such systems. The laser tracker needs to be set up so that the laser beam is reflected by the same set of mirro ...
... can be quite challenging to align, as there is no well defined axis and optical distances are hard to define. Since the laser tracker measures coordinates optically, it works very well for such systems. The laser tracker needs to be set up so that the laser beam is reflected by the same set of mirro ...
GMT site, enclosure, and facilities design and development
... information detailing the summit site proper, minimal information was known about the broader site area where the support facilities will be located. During rough grading activities, there was a significant quantity of competent bedrock discovered just below grade. Where bedrock was not encountered, ...
... information detailing the summit site proper, minimal information was known about the broader site area where the support facilities will be located. During rough grading activities, there was a significant quantity of competent bedrock discovered just below grade. Where bedrock was not encountered, ...
ppt file
... - David Shiekh developed the adaptation of LL Ag coating (LL coating used in SALT). - Currently running 3 Ag jobs similar to M4. - Drew Phillips (at Lick) is likely to use ZeCoat’s Ag coating for Keck Cosmic Web ...
... - David Shiekh developed the adaptation of LL Ag coating (LL coating used in SALT). - Currently running 3 Ag jobs similar to M4. - Drew Phillips (at Lick) is likely to use ZeCoat’s Ag coating for Keck Cosmic Web ...
SCA Laser Collimator for SCT
... secondary mirror. As the result, when a laser is installed and emitted from the focuser, the beam will seldom return to dead center, even though star testing would indicate perfect collimation. In addition, the secondary mirror, convex shape, magnifies any error by about 5 times. The error of deviat ...
... secondary mirror. As the result, when a laser is installed and emitted from the focuser, the beam will seldom return to dead center, even though star testing would indicate perfect collimation. In addition, the secondary mirror, convex shape, magnifies any error by about 5 times. The error of deviat ...
astronomical eyepieces - Amateur Astronomers Association Delhi
... typically less than one focal length. Lenses are plano convex lenses with curved surfaces facing each other. Separation between lenses is adjustable to remove the transverse chromatic aberration. Focal plane of this eyepiece is outside the lens arrangement and is thus accessible for a graticule to b ...
... typically less than one focal length. Lenses are plano convex lenses with curved surfaces facing each other. Separation between lenses is adjustable to remove the transverse chromatic aberration. Focal plane of this eyepiece is outside the lens arrangement and is thus accessible for a graticule to b ...
ISA_lecture02
... Observing time Background - e.g. scattered light. As well as natural sources, man-made pollution is a major problem for astronomy. At optical wavelengths for example…. Intro to Stellar Astrophysics L2 ...
... Observing time Background - e.g. scattered light. As well as natural sources, man-made pollution is a major problem for astronomy. At optical wavelengths for example…. Intro to Stellar Astrophysics L2 ...
Powerpoint file as used in presentation
... Resulting throughput calculated: 85%, guaranteed: 80% ...
... Resulting throughput calculated: 85%, guaranteed: 80% ...
Introduction to Aberrations OPTI 518 Jose Sasian
... Misconduct of any kind will be prosecuted and may result in any or all of the following: * Reduction of grade * Failing grade * Referral to the Dean of Students for consideration of additional penalty, i.e. notation on a student’s transcript re. academic integrity violation, etc. Students with a Lea ...
... Misconduct of any kind will be prosecuted and may result in any or all of the following: * Reduction of grade * Failing grade * Referral to the Dean of Students for consideration of additional penalty, i.e. notation on a student’s transcript re. academic integrity violation, etc. Students with a Lea ...
LIFEPAC® 6th Grade Science Unit 9 Worktext - HomeSchool
... God, our loving Creator. In fact, some Christians may be inspired to make the study of the stars an enjoyable hobby or even a life’s work! The study of the stars and other objects in the universe is called astronomy. It is one of the oldest sciences. It is also one of the most fascinating sciences! ...
... God, our loving Creator. In fact, some Christians may be inspired to make the study of the stars an enjoyable hobby or even a life’s work! The study of the stars and other objects in the universe is called astronomy. It is one of the oldest sciences. It is also one of the most fascinating sciences! ...
Adaptive Optics Update
... • Science Path ADCs, water-free fused silica and fluorite • NGS/LGS beamsplitter made from ordinary fused silica, with small wedge angle and a cylindrical curvature on R2. • NGS ADCs made from optical glass • LGS four spherical optical glass lenses • NGS sphero-parabolic optical glass lens • Off-axi ...
... • Science Path ADCs, water-free fused silica and fluorite • NGS/LGS beamsplitter made from ordinary fused silica, with small wedge angle and a cylindrical curvature on R2. • NGS ADCs made from optical glass • LGS four spherical optical glass lenses • NGS sphero-parabolic optical glass lens • Off-axi ...
chapter - Angelfire
... 36 ∙∙ Repeat Problem 35 for a point object in air on the axis of the rod 20 cm from the end with the 16-cm radius. (a), (b), (c) Proceed as in Problem 34-35 (a) s′ = –128 cm; (b) s′ = 14.7 cm (c) The image is real and 14.7 cm from the far end of the rod. 37* ∙ Under what conditions will the focal le ...
... 36 ∙∙ Repeat Problem 35 for a point object in air on the axis of the rod 20 cm from the end with the 16-cm radius. (a), (b), (c) Proceed as in Problem 34-35 (a) s′ = –128 cm; (b) s′ = 14.7 cm (c) The image is real and 14.7 cm from the far end of the rod. 37* ∙ Under what conditions will the focal le ...
PACS FPU Optical System Design
... Optical Design – Spectrometers Changes in optical design for spectrometer since ISVR ...
... Optical Design – Spectrometers Changes in optical design for spectrometer since ISVR ...
The following is a supplemental addendum to the included
... Before any of the described alignments are performed, the CGE needs to first index its switch position so that each axis has an equal amount of travel to move in either direction. Once the index position has been set, the hand control will display the last entered date and time information stored in ...
... Before any of the described alignments are performed, the CGE needs to first index its switch position so that each axis has an equal amount of travel to move in either direction. Once the index position has been set, the hand control will display the last entered date and time information stored in ...
LaPalma_2013_Hook
... • A concave spherical mirror suffers from severe spherical aberration and has limited use without additional optics (more about this later) • A concave paraboloid focuses light to a perfect image on its axis but suffers from coma (~1/F2) and astigmatism off-axis • For long focal ratios (f/4 and grea ...
... • A concave spherical mirror suffers from severe spherical aberration and has limited use without additional optics (more about this later) • A concave paraboloid focuses light to a perfect image on its axis but suffers from coma (~1/F2) and astigmatism off-axis • For long focal ratios (f/4 and grea ...
Australian Membership of the Giant Magellan Telescope Project
... light-gathering power and 2.5 times the resolving power of the largest existing telescopes. The design utilizes the largest monolith mirrors that can be made today and an adaptive secondary that is an achievable extension of the technology already in use on other telescopes built by GMT consortium p ...
... light-gathering power and 2.5 times the resolving power of the largest existing telescopes. The design utilizes the largest monolith mirrors that can be made today and an adaptive secondary that is an achievable extension of the technology already in use on other telescopes built by GMT consortium p ...
Beam Expander Basics: Not All Spots Are Created Equal
... Beam expanders are used in applications such as laser scanning, interferometry, and remote sensing. Contemporary laser beam expander designs are afocal systems that developed ...
... Beam expanders are used in applications such as laser scanning, interferometry, and remote sensing. Contemporary laser beam expander designs are afocal systems that developed ...
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.