Diapositiva 1
... • Mirrors are usually built in the Wolter I (paraboloid-hyperboloid) configuration which provides, in principle, perfect on-axis images. • This design exhibits no spherical aberration on-axis but suffers from field curvature, coma and astigmatism, which make the angular resolution to degrade rapidly ...
... • Mirrors are usually built in the Wolter I (paraboloid-hyperboloid) configuration which provides, in principle, perfect on-axis images. • This design exhibits no spherical aberration on-axis but suffers from field curvature, coma and astigmatism, which make the angular resolution to degrade rapidly ...
Visible light laser guidestar experimental system (Villages): on
... With AO sharpening of the star, the effective aperture is the diameter of the telescope (d = D), whereas, in uncorrected seeing the effective diameter is the seeing coherence length (d = r0). Thus, for a given tip/tilt measurement accuracy, the number of photons required from a sharpened guide star ...
... With AO sharpening of the star, the effective aperture is the diameter of the telescope (d = D), whereas, in uncorrected seeing the effective diameter is the seeing coherence length (d = r0). Thus, for a given tip/tilt measurement accuracy, the number of photons required from a sharpened guide star ...
Novel Use of Photovoltaics for Backup Spacecraft Laser
... ground based detectors can be made. This enables the technology to increase its range, post spacecraft deployment. Several technologies are considered for mirror actuation on the spacecraft including DLPs, reflector LCDs, retro-modulators and thin-film quantum wells for high bandwidth applications [ ...
... ground based detectors can be made. This enables the technology to increase its range, post spacecraft deployment. Several technologies are considered for mirror actuation on the spacecraft including DLPs, reflector LCDs, retro-modulators and thin-film quantum wells for high bandwidth applications [ ...
Proposals for Gen2
... about user interface of Gen2 Tentative deadline: late May, 2009 – After international conference in Kyoto ...
... about user interface of Gen2 Tentative deadline: late May, 2009 – After international conference in Kyoto ...
Physics 262 Lab #5: Geometric Optics John Yamrick
... Equally important are the principal points of the lens. Imagine a set of planes normal to the principal points. A light ray that reaches a particular coordinate in one of these planes can be thought of as being reproduced at the other plane travelling in the same direction as it would if the lens ha ...
... Equally important are the principal points of the lens. Imagine a set of planes normal to the principal points. A light ray that reaches a particular coordinate in one of these planes can be thought of as being reproduced at the other plane travelling in the same direction as it would if the lens ha ...
2013 - Society for Astronomical Sciences
... Moon and document impact flashes has been put out to the public in hopes to correlate impact events with changes in the dust environment. NASA wants the maximum number of observers possible to watch the moon for these impacts to best correlate these with the dust concentration changes just mentioned ...
... Moon and document impact flashes has been put out to the public in hopes to correlate impact events with changes in the dust environment. NASA wants the maximum number of observers possible to watch the moon for these impacts to best correlate these with the dust concentration changes just mentioned ...
`IMAKA: Imaging from Mauna KeA with an atmosphere corrected 1
... The intermediate field of view at the output of the AO relay will be used to pick off the light for wavefront sensing, presumably with small mirrors on articulated arms, or possibly with steerable micro-mirrors. The disadvantage of articulated pick-up mirrors is that some field is lost under the foo ...
... The intermediate field of view at the output of the AO relay will be used to pick off the light for wavefront sensing, presumably with small mirrors on articulated arms, or possibly with steerable micro-mirrors. The disadvantage of articulated pick-up mirrors is that some field is lost under the foo ...
CFRP composite optical telescope assembly for the 1m ULTRA project
... for fasteners. It would be extremely expensive to custom fabricate fastener hardware from CFRP. For small, intricate interfacing parts which require extensive machining we have used aluminum or stainless. ...
... for fasteners. It would be extremely expensive to custom fabricate fastener hardware from CFRP. For small, intricate interfacing parts which require extensive machining we have used aluminum or stainless. ...
Celestron Dacl"fl"c ...the world`s leading manufacturer the Celestron
... clear aperture all of the fine features of the Celestron 8. It causes failll celestial objects to appear 188 times brighter than to the unaided eye and its resolution is 0.8 arc seconds. If your interest in astronomy is something less than all-encompassing, but you want the finest available multipur ...
... clear aperture all of the fine features of the Celestron 8. It causes failll celestial objects to appear 188 times brighter than to the unaided eye and its resolution is 0.8 arc seconds. If your interest in astronomy is something less than all-encompassing, but you want the finest available multipur ...
Combined temperature lidar for measurements in the troposphere
... with the new filters. Another change to the previous setup was made for the water vapor Raman channel, which was employed to measure the water vapor mixing ratio with the Raman technique.22,23 We exchanged the broadband color filter, IFa, for a narrowband interference filter with 1.2 nm FWHM to impr ...
... with the new filters. Another change to the previous setup was made for the water vapor Raman channel, which was employed to measure the water vapor mixing ratio with the Raman technique.22,23 We exchanged the broadband color filter, IFa, for a narrowband interference filter with 1.2 nm FWHM to impr ...
LIGO-M080375-V12 (Abbreviations And Acronyms)
... Data Acquisition System Differential Arm {Length, Signal} - Difference between the x and y arm lengths; This is the main interferometer output signal for GW detection = (Lx - Ly) Data Analysis Software Working Group ...
... Data Acquisition System Differential Arm {Length, Signal} - Difference between the x and y arm lengths; This is the main interferometer output signal for GW detection = (Lx - Ly) Data Analysis Software Working Group ...
12Nov_AGNWS_honma
... parameters is larger than that of equations • If we can solve these equations directly (i.e., without 0 padding), the image should be free from 0-padding effect (no side-lobes, super-resolution !?) ...
... parameters is larger than that of equations • If we can solve these equations directly (i.e., without 0 padding), the image should be free from 0-padding effect (no side-lobes, super-resolution !?) ...
Slit lamp biomicroscopy - Optometry Peer Tutoring
... Good for subtle detail, which would be obscured or ...
... Good for subtle detail, which would be obscured or ...
Leica Nova MS50 - White Paper
... measurement. This pulse is called the start pulse. The rest of the pulse is emitted out of the telescope and reflected by the object. The returning pulse is called stop pulse. For every measurement, an internal calibration measurement is done. ...
... measurement. This pulse is called the start pulse. The rest of the pulse is emitted out of the telescope and reflected by the object. The returning pulse is called stop pulse. For every measurement, an internal calibration measurement is done. ...
celt-wireless
... • Interference with other systems • Wireless transmissions at 2.4 GHz • Optical communications lasers (do we really want signal lasers bouncing around the back of our telescope primary?) ...
... • Interference with other systems • Wireless transmissions at 2.4 GHz • Optical communications lasers (do we really want signal lasers bouncing around the back of our telescope primary?) ...
VHE BL Lacs through the MAGIC glasses
... to be explained in the framework of the current theoretical models. The long term multi wavelength (MWL) study of the BL Lac PKS 1424+240 shows correlation between the radio and optical emission, pointing to a common origin. The MWL SED is not well fitted by a one-zone synchrotron-self Compton (SSC) ...
... to be explained in the framework of the current theoretical models. The long term multi wavelength (MWL) study of the BL Lac PKS 1424+240 shows correlation between the radio and optical emission, pointing to a common origin. The MWL SED is not well fitted by a one-zone synchrotron-self Compton (SSC) ...
LaPalma_2013_Hook
... – Poisson “shot” noise from photon statistics, applies to objects, the sky and dark noise, SNR increases as the square root of exposure time – Gaussian noise from the CCD readout, independent of exposure time ...
... – Poisson “shot” noise from photon statistics, applies to objects, the sky and dark noise, SNR increases as the square root of exposure time – Gaussian noise from the CCD readout, independent of exposure time ...
The achromatic design of an atmospheric dispersion corrector for
... monochromatic aberrations are usually compensated by adaptive optics (AO) system [1–3]. In ELTs the intrinsic chromatic aberrations are not significant in slow beams (e.g. f/15), however their correction becomes critical in fast beams (faster than f/5). In ELTs, sometimes there is an intermediate fa ...
... monochromatic aberrations are usually compensated by adaptive optics (AO) system [1–3]. In ELTs the intrinsic chromatic aberrations are not significant in slow beams (e.g. f/15), however their correction becomes critical in fast beams (faster than f/5). In ELTs, sometimes there is an intermediate fa ...
T1000311-v7 TMS Hazards Analysis - DCC
... may also be pinched when assembling parts to one another, but this can be mitigated with proper attention to handling the parts. During the assembly inside the vacuum chamber, personnel should be mindful of where they stand and move so as to not damage nearby objects or bump their heads, knees, etc. ...
... may also be pinched when assembling parts to one another, but this can be mitigated with proper attention to handling the parts. During the assembly inside the vacuum chamber, personnel should be mindful of where they stand and move so as to not damage nearby objects or bump their heads, knees, etc. ...
ADAPTIVE OPTICS ON GROUND
... certain Bounds beyond which Telescopes could not perform, For the air through which we look upon Stars, is in perpetual Tremor; as may be seen by the tremulous Motion of Shadows cast from high Towers, and by the twinkling of the fix’d stars.”… “The only Remedy is a most serene and quiet Air, such as ...
... certain Bounds beyond which Telescopes could not perform, For the air through which we look upon Stars, is in perpetual Tremor; as may be seen by the tremulous Motion of Shadows cast from high Towers, and by the twinkling of the fix’d stars.”… “The only Remedy is a most serene and quiet Air, such as ...
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 ...