MAGIC II Mirrors - Padua Astroparticle group.
... • A thin glass sheet (1-2 mm) is elastically deformed so to retain the shape imparted by a mould having convex profile. If the radius of curvature is large, the sheet can be pressed against the mould using the vacuum suction. • On the deformed glass sheet (under vacuum force) is glued an honeycomb s ...
... • A thin glass sheet (1-2 mm) is elastically deformed so to retain the shape imparted by a mould having convex profile. If the radius of curvature is large, the sheet can be pressed against the mould using the vacuum suction. • On the deformed glass sheet (under vacuum force) is glued an honeycomb s ...
development and verification of the non
... exoplanets and disks around nearby stars requires high accuracy control of low-order modes that dominate atmospheric turbulence and scatter light at small angles where exoplanets are likely to be found. Imaging planets using a high contrast coronagraphic camera, as is the case for the Spectro-Polari ...
... exoplanets and disks around nearby stars requires high accuracy control of low-order modes that dominate atmospheric turbulence and scatter light at small angles where exoplanets are likely to be found. Imaging planets using a high contrast coronagraphic camera, as is the case for the Spectro-Polari ...
8. Adaptive Optics
... As a baseline, the wavefront sensor is a Shack-Hartmann with 97 x 97 sub-apertures and will be installed in the OWL adapter. A pick-up arm will allow acquiring the Natural Guide Star (NGS) within the central 2’ FoV. The input optical beam is F/6.03 (2.920 mm/arcsec) and the pick-up arm will be locat ...
... As a baseline, the wavefront sensor is a Shack-Hartmann with 97 x 97 sub-apertures and will be installed in the OWL adapter. A pick-up arm will allow acquiring the Natural Guide Star (NGS) within the central 2’ FoV. The input optical beam is F/6.03 (2.920 mm/arcsec) and the pick-up arm will be locat ...
spherical aberration
... The magnitude of the differences between the tangential and sagittal MTF components clearly show more variability for the unequal conic design. ...
... The magnitude of the differences between the tangential and sagittal MTF components clearly show more variability for the unequal conic design. ...
spherical aberration
... The magnitude of the differences between the tangential and sagittal MTF components clearly show more variability for the unequal conic design. ...
... The magnitude of the differences between the tangential and sagittal MTF components clearly show more variability for the unequal conic design. ...
9 adaptive optics - Giant Magellan Telescope
... GMT’s large aperture gives inherently better sky access; thus adaptive correction will be a powerful tool for the general observer. The first major step toward increasing sky coverage is now being taken with the development of laser guide stars on 8-m class telescopes. Light from a sodium resonance ...
... GMT’s large aperture gives inherently better sky access; thus adaptive correction will be a powerful tool for the general observer. The first major step toward increasing sky coverage is now being taken with the development of laser guide stars on 8-m class telescopes. Light from a sodium resonance ...
Woofer-Tweeter Adaptive Optics for Astronomy
... The Earth’s atmosphere has long been identified as a limiting factor in astronomical observations. The ‘tremors of the atmosphere’ that Newton mentions have the effect of reducing imaging resolution in telescopes far short of diffraction limited performance. When imaging through strong turbulence th ...
... The Earth’s atmosphere has long been identified as a limiting factor in astronomical observations. The ‘tremors of the atmosphere’ that Newton mentions have the effect of reducing imaging resolution in telescopes far short of diffraction limited performance. When imaging through strong turbulence th ...
Galileo, my first term paper
... the sole rights for the manufacture of telescopes to the Venetian Senate. By the end of 1609 Galileo had turned his telescope on the night sky and began to make remarkable discoveries. In about two months he made more discoveries that changed the world than anyone has ever made before or since. ...
... the sole rights for the manufacture of telescopes to the Venetian Senate. By the end of 1609 Galileo had turned his telescope on the night sky and began to make remarkable discoveries. In about two months he made more discoveries that changed the world than anyone has ever made before or since. ...
Reflecting `Popular Culture`: The Introduction, Diffusion, and
... mirror. However, the practical construction of the instrument floundered on insurmountable problems.8 Therefore, Newton chose a simpler design. His telescope had a concave spherical mirror, in combination with a flat mirror.9 By keeping the primary mirror small in relation to its focal length, the d ...
... mirror. However, the practical construction of the instrument floundered on insurmountable problems.8 Therefore, Newton chose a simpler design. His telescope had a concave spherical mirror, in combination with a flat mirror.9 By keeping the primary mirror small in relation to its focal length, the d ...
T1000179-v18_aLIGO_HWS_optical_layouts - DCC
... 4 Optical layout features Various features of the optical layouts are described in this Section. ...
... 4 Optical layout features Various features of the optical layouts are described in this Section. ...
Astronomical imaging using ground
... Ground-layer adaptive optics (GLAO) is a potentially powerful adaptive optics (AO) technique which promises modest wavefront correction over wide fields of view. By measuring and averaging the incoming wavefronts to a telescope at several different field points, an estimate of the common turbulence ...
... Ground-layer adaptive optics (GLAO) is a potentially powerful adaptive optics (AO) technique which promises modest wavefront correction over wide fields of view. By measuring and averaging the incoming wavefronts to a telescope at several different field points, an estimate of the common turbulence ...
SEI Structure Development - LIGO
... Prototype cost basis for optical lever receiver and Hartmann sensors Engineering cost estimate for TCS ring heaters PO mirror suspension engineering estimate based on quad SUS prototype * For LIGO estimating, contingency was first estimated using a standard qualitative process to assign risk factors ...
... Prototype cost basis for optical lever receiver and Hartmann sensors Engineering cost estimate for TCS ring heaters PO mirror suspension engineering estimate based on quad SUS prototype * For LIGO estimating, contingency was first estimated using a standard qualitative process to assign risk factors ...
Operating Manual
... Congratulations and thank you for buying one of Santa Barbara Instrument Group's CCD cameras. The model ST-7E, ST-8E, ST-9E, ST-10E and ST-1001E are SBIG's fourth generation CCD cameras and represent the state of the art in CCD camera systems with their low noise and advanced capabilities, including ...
... Congratulations and thank you for buying one of Santa Barbara Instrument Group's CCD cameras. The model ST-7E, ST-8E, ST-9E, ST-10E and ST-1001E are SBIG's fourth generation CCD cameras and represent the state of the art in CCD camera systems with their low noise and advanced capabilities, including ...
NEW DESIGN AND NEW CHALLENGE FOR SPACE LARGE
... large mirror, a more advanced design has been developed by Thales Alenia Space with Thales SESO support. The concept consists of a sandwich mirror made of 2 Zerodur® shaped thin skins, one on front face, and one on rear face linked together by an optimized CFRP honeycomb using high Young modulus and ...
... large mirror, a more advanced design has been developed by Thales Alenia Space with Thales SESO support. The concept consists of a sandwich mirror made of 2 Zerodur® shaped thin skins, one on front face, and one on rear face linked together by an optimized CFRP honeycomb using high Young modulus and ...
Galileo
... Galileo invents a sector, a calculating instrument consisting of two equal length rulers joined by a hinge. It was used to solve practical mathematics problems in proportion, trigonometry, multiplication and division. ...
... Galileo invents a sector, a calculating instrument consisting of two equal length rulers joined by a hinge. It was used to solve practical mathematics problems in proportion, trigonometry, multiplication and division. ...
Lens
... The direct light output of LEDs spreads at obtuse angle (usually greater than 120 degrees). This results in a disadvantage in the use of LEDs when illuminating a surface uniformly at an acute angle. This issue, can be improved either by placing a lens having a suitable geometric form in front of the ...
... The direct light output of LEDs spreads at obtuse angle (usually greater than 120 degrees). This results in a disadvantage in the use of LEDs when illuminating a surface uniformly at an acute angle. This issue, can be improved either by placing a lens having a suitable geometric form in front of the ...
Optical telescope
An optical telescope is a telescope that gathers and focuses light, mainly from the visible part of the electromagnetic spectrum, to create a magnified image for direct view, or to make a photograph, or to collect data through electronic image sensors.There are three primary types of optical telescope: refractors, which use lenses (dioptrics) reflectors, which use mirrors (catoptrics) catadioptric telescopes, which combine lenses and mirrorsA telescope's light gathering power and ability to resolve small detail is directly related to the diameter (or aperture) of its objective (the primary lens or mirror that collects and focuses the light). The larger the objective, the more light the telescope collects and the finer detail it resolves.People use telescopes and binoculars for activities such as observational astronomy, ornithology, pilotage and reconnaissance, and watching sports or performance arts.