1 Introduction - Arecibo Observatory
... With the arrival at the Observatory of the Arecibo L-band Feed Array (ALFA) in mid2004, an exciting new facility with wide user-community appeal was added to the telescope’s receiver ensemble. ALFA is a seven-feed receiver system that allows large-scale surveys of the sky to be conducted with unprec ...
... With the arrival at the Observatory of the Arecibo L-band Feed Array (ALFA) in mid2004, an exciting new facility with wide user-community appeal was added to the telescope’s receiver ensemble. ALFA is a seven-feed receiver system that allows large-scale surveys of the sky to be conducted with unprec ...
High-order wavefront sensing system for PALM-3000 Christoph Baranec
... The relay system that will image the microlens array focal plane array has been selected as a pair of commercially available achromatic lenses with broadband anti-reflection coatings. The design magnification of 0.318 can be adjusted by ±10% with negligible degradation in image quality. The relay ha ...
... The relay system that will image the microlens array focal plane array has been selected as a pair of commercially available achromatic lenses with broadband anti-reflection coatings. The design magnification of 0.318 can be adjusted by ±10% with negligible degradation in image quality. The relay ha ...
observing manual - Texas Tech University
... finderscope and the slew buttons, move the telescope until the star is centered on the crosshairs of the finder. You can vary the speed at which the telescope moves by pressing the “SPEED” button and then scrolling through the slew rates using the up/down buttons. Press ENTER after you have chose ...
... finderscope and the slew buttons, move the telescope until the star is centered on the crosshairs of the finder. You can vary the speed at which the telescope moves by pressing the “SPEED” button and then scrolling through the slew rates using the up/down buttons. Press ENTER after you have chose ...
Acquisition, Tracking and Pointing control
... the direction of the laser raycoming from the receiver side and incident into the common focal plane and the transmitter fast steering mirror, is ln our csse lying on the aJds zR I zTI. whem the frame T’ is defined as being parallel to the frame T and located at the center of the transIll ‘tter fast ...
... the direction of the laser raycoming from the receiver side and incident into the common focal plane and the transmitter fast steering mirror, is ln our csse lying on the aJds zR I zTI. whem the frame T’ is defined as being parallel to the frame T and located at the center of the transIll ‘tter fast ...
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 ...
Instruction Manual #11007 / #11008 / #11009 ®
... 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 CPC, so you should keep this manual handy until you have fully mastered your telescope’s operation. The CPC hand control has built-in instruc ...
... 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 CPC, so you should keep this manual handy until you have fully mastered your telescope’s operation. The CPC hand control has built-in instruc ...
Document
... Other error sources included in Strehl Ratio and Encircled Energy End-to-end simulations ready soon More details on simulations by Cyril Petit AO for ELT – Paris, 22-26 June 2009 ...
... Other error sources included in Strehl Ratio and Encircled Energy End-to-end simulations ready soon More details on simulations by Cyril Petit AO for ELT – Paris, 22-26 June 2009 ...
Introduction - Arecibo Observatory
... mass, active stars, which cannot be studied efficiently through the radial velocity method, coronography, or optical interferometry.'' Current measurement errors are limited by the number of nearby compact sources that are well above the detection threshold of their observations and which can be us ...
... mass, active stars, which cannot be studied efficiently through the radial velocity method, coronography, or optical interferometry.'' Current measurement errors are limited by the number of nearby compact sources that are well above the detection threshold of their observations and which can be us ...
The scallop`s eye---a concave mirror in the context
... radius of curvature, f = r/2. This means that the image of a distant object will be situated half a radius of curvature in front of the mirror (figure 3). The reflecting argentea forms an image just below the back surface of the lens; this is the region occupied by the photo-receptive parts of the r ...
... radius of curvature, f = r/2. This means that the image of a distant object will be situated half a radius of curvature in front of the mirror (figure 3). The reflecting argentea forms an image just below the back surface of the lens; this is the region occupied by the photo-receptive parts of the r ...
Ong page 1 of VHE astro
... determine mechanism and nebular magnetic field g from in shock wave, maybe also p0 decay? bursts of gamma rays lasting 10 msec to 1000 sec, some of which are associated with SN explosions ...
... determine mechanism and nebular magnetic field g from in shock wave, maybe also p0 decay? bursts of gamma rays lasting 10 msec to 1000 sec, some of which are associated with SN explosions ...
MEGARA spectrograph for the GTC
... In order to avoid radial displacements of the VPH gratings during the rotation of the wheel, it is envisaged a delrin circular track, screwed to the table, on which are inserted all the protrusions and with an aperture on the position of the insertion mechanism. At this point it overlaps with the t ...
... In order to avoid radial displacements of the VPH gratings during the rotation of the wheel, it is envisaged a delrin circular track, screwed to the table, on which are inserted all the protrusions and with an aperture on the position of the insertion mechanism. At this point it overlaps with the t ...
Slide 1
... explosion of a star that became known as Tycho's Supernova. More than four centuries later, Chandra's image of the supernova remnant shows an expanding bubble of multimillion degree debris (green and red) inside a more rapidly moving shell of extremely high energy electrons (filamentary blue). The s ...
... explosion of a star that became known as Tycho's Supernova. More than four centuries later, Chandra's image of the supernova remnant shows an expanding bubble of multimillion degree debris (green and red) inside a more rapidly moving shell of extremely high energy electrons (filamentary blue). The s ...
mems deformable mirrors industry perspective AdAptive imAging thomas Bifano
... as the effectiveness of treatments that affect cellular structures in the retina. ...
... as the effectiveness of treatments that affect cellular structures in the retina. ...
The WSO, a world-class observatory for the ultraviolet
... spectroscopy. The planned instrument sensitivity will exceed that of HST/STIS by a factor 5-10, but all the observing time will be available for UV astronomy. Furthermore, it is planned to operate the mission at the L2 point of the Earth-Sun system providing a significant increase in operational eff ...
... spectroscopy. The planned instrument sensitivity will exceed that of HST/STIS by a factor 5-10, but all the observing time will be available for UV astronomy. Furthermore, it is planned to operate the mission at the L2 point of the Earth-Sun system providing a significant increase in operational eff ...
Ground-Conjugate Wide Field Adaptive Optics for the ELTs F. Rigaut
... Because in some case, the variation of performance with respect to the layer altitude is very fast, we used balloon atmospheric pro les provided by M.Sarazin (ESO) for Cerro Paranal (10 lauches) and by M.Chun (Gemini) for Cerro Pachon (over 35 lauches), with a typical vertical sampling of 3-5 meters ...
... Because in some case, the variation of performance with respect to the layer altitude is very fast, we used balloon atmospheric pro les provided by M.Sarazin (ESO) for Cerro Paranal (10 lauches) and by M.Chun (Gemini) for Cerro Pachon (over 35 lauches), with a typical vertical sampling of 3-5 meters ...
AMiBA: Hexapod Commissioning and Pointing
... commanding possibilities: • preset az el pol (PTC) • startrack ra dec skypol (hexpol=const or skypol=const) • program track: ‘any trajectory’ ...
... commanding possibilities: • preset az el pol (PTC) • startrack ra dec skypol (hexpol=const or skypol=const) • program track: ‘any trajectory’ ...
INSTRUCTION MANUAL
... The NexStar’s deluxe features combined with Celestron’s legendary optical standards give amateur astronomers one of the most sophisticated and easy to use telescopes available on the market today. Take time to read through this manual before embarking on your journey through the Universe. It may tak ...
... The NexStar’s deluxe features combined with Celestron’s legendary optical standards give amateur astronomers one of the most sophisticated and easy to use telescopes available on the market today. Take time to read through this manual before embarking on your journey through the Universe. It may tak ...
... seeing quality to its client instrument, Hawk-I. In the introduction, we present the concept of ground layer adaptive optics, the instrument and the AOF. The following sections provide the simulated performance, a description of the design of the module, and some management aspects of the project an ...
Review of Basic Principles in Optics, Wavefront
... Guirao,A. & Williams,D.R. (2003). A method to predict refractive errors from wave aberration data. Optom.Vis.Sci. 80, 36-42. Marsack,J.D., Thibos,L.N., & Applegate,R.A. (2003). Scalar metrics of optical quality derived from wave aberrations predict visual performanc. J.Vis. 4, 322-328. Sarver,E.J. & ...
... Guirao,A. & Williams,D.R. (2003). A method to predict refractive errors from wave aberration data. Optom.Vis.Sci. 80, 36-42. Marsack,J.D., Thibos,L.N., & Applegate,R.A. (2003). Scalar metrics of optical quality derived from wave aberrations predict visual performanc. J.Vis. 4, 322-328. Sarver,E.J. & ...
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.