Thompson
... WNEW provides a greatly enhanced platform for carrying out the proposed WFIRST science program at higher sensitivity, in less time and with twice as many photometric bands. WNEW provides new science capabilities to go beyond the proposed WFIRST program. WNEW could start tomorrow. ...
... WNEW provides a greatly enhanced platform for carrying out the proposed WFIRST science program at higher sensitivity, in less time and with twice as many photometric bands. WNEW provides new science capabilities to go beyond the proposed WFIRST program. WNEW could start tomorrow. ...
as PDF
... will only allow very limited amount of light to enter your spectrometer. So, if your design requires a slit of 5 – 10 microns or less you could consider the following: • loosening your requirement for the resolution • choosing a wider detector and choosing a grating with a higher ...
... will only allow very limited amount of light to enter your spectrometer. So, if your design requires a slit of 5 – 10 microns or less you could consider the following: • loosening your requirement for the resolution • choosing a wider detector and choosing a grating with a higher ...
ALTERNATIVE DESIGNS FOR SPACE X
... production of Cerenkov mirrors. However, the application of this technology in X-ray optics is related with the need to significantly improve the accuracy and minimize the errors. As the first step, small (various sizes typically less than 100 x 100 mm) glass samples of various types provided by var ...
... production of Cerenkov mirrors. However, the application of this technology in X-ray optics is related with the need to significantly improve the accuracy and minimize the errors. As the first step, small (various sizes typically less than 100 x 100 mm) glass samples of various types provided by var ...
Looking Further
... Hermann Oberth had an idea to solve this problem. His idea was to send a telescope up into space on a rocket. The telescope would orbit high above Earth so scientists could see things clearly. Four satellites carrying telescopes were sent into space between 1966 and 1972. ...
... Hermann Oberth had an idea to solve this problem. His idea was to send a telescope up into space on a rocket. The telescope would orbit high above Earth so scientists could see things clearly. Four satellites carrying telescopes were sent into space between 1966 and 1972. ...
how to set out an angle with the theo020 theodolite
... Turn the horizontal alignment knob until the vertical crosshair is lined up with B. 15 Unlock the vertical clamp and rotate the telescope until the horizontal crosshair is near B. 16 Lock the vertical clamp 17 Turn the vertical alignment knob until the horizontal crosshair is exactly on B 18 Release ...
... Turn the horizontal alignment knob until the vertical crosshair is lined up with B. 15 Unlock the vertical clamp and rotate the telescope until the horizontal crosshair is near B. 16 Lock the vertical clamp 17 Turn the vertical alignment knob until the horizontal crosshair is exactly on B 18 Release ...
Lecture-6-Optics
... determines the light gathering ability of the lens. Field Stop (F.S.) – Limits the size or angular breadth of the object. In a camera, the edge of the film itself bounds the image plane and becomes the F.S. Entrance Pupil – Image of the A.S. as seen from the object side of the lens system (below). E ...
... determines the light gathering ability of the lens. Field Stop (F.S.) – Limits the size or angular breadth of the object. In a camera, the edge of the film itself bounds the image plane and becomes the F.S. Entrance Pupil – Image of the A.S. as seen from the object side of the lens system (below). E ...
Design of Custom Achromatic Lenses Used For Optical Image Relay
... be offloaded to lens design software that is not only much faster than doing manual calculations but can achieve a level optimization that is practically impossible to do by hand. Such software packages can account for dispersion, thickness of the lenses, paraxial approximations, and many other fact ...
... be offloaded to lens design software that is not only much faster than doing manual calculations but can achieve a level optimization that is practically impossible to do by hand. Such software packages can account for dispersion, thickness of the lenses, paraxial approximations, and many other fact ...
Document
... Completing one set of image series every 10 minutes, adequately sampling the 3.97 day light curve of Polaris. The observations will ulitmately result in the photometric measurements of the lightcurve of Polaris. We plan to continue observations for the lifetime of the instruments. ...
... Completing one set of image series every 10 minutes, adequately sampling the 3.97 day light curve of Polaris. The observations will ulitmately result in the photometric measurements of the lightcurve of Polaris. We plan to continue observations for the lifetime of the instruments. ...
NIRCam Instrument Overview
... • Critical resolved shear stress, τc, defined as the stress which causes material to slip • Values from literature suggest a τc of ~5MPa for LiF. We are using 2MPa max on NIRCam. • Ultimately, τc will be highly dependent of processing and surface finish ...
... • Critical resolved shear stress, τc, defined as the stress which causes material to slip • Values from literature suggest a τc of ~5MPa for LiF. We are using 2MPa max on NIRCam. • Ultimately, τc will be highly dependent of processing and surface finish ...
Light and colour concepts - Christchurch Girls` High School
... Reflecting telescopes gather light with a mirror, reflecting it before directing it to the eyepiece. The simplest type of reflecting telescope is called a "Newtonian," after Sir Isaac Newton ...
... Reflecting telescopes gather light with a mirror, reflecting it before directing it to the eyepiece. The simplest type of reflecting telescope is called a "Newtonian," after Sir Isaac Newton ...
T1000526 HAM Aux suspension design requirements
... The maximum nominal angle of incidence on the optic is expected to be 53.2 deg on the horizontal plane, 0 on the vertical plane. The maximum beam diameter at the 10 ppm level is expected to be 10.56 mm. The suspension must guarantee that under this circumstances none of the incident, reflected or tr ...
... The maximum nominal angle of incidence on the optic is expected to be 53.2 deg on the horizontal plane, 0 on the vertical plane. The maximum beam diameter at the 10 ppm level is expected to be 10.56 mm. The suspension must guarantee that under this circumstances none of the incident, reflected or tr ...
CASA Concept for HROS - Thirty Meter Telescope
... particular the fiber-fed IFUs and dichroics, are presented in a companion paper in this volume (Osterman et al. 2006) 1. HROS will be a multi-purpose high-resolution optical spectrograph for the TMT. In order to meet its operational and functional requirements, there are several issues to confront. ...
... particular the fiber-fed IFUs and dichroics, are presented in a companion paper in this volume (Osterman et al. 2006) 1. HROS will be a multi-purpose high-resolution optical spectrograph for the TMT. In order to meet its operational and functional requirements, there are several issues to confront. ...
Diffraction-limited astronomical X-ray imaging and X
... cm2 (depending on the wavelength) could be achieved with a moderately-sized Cassegrain-type telescope geometry, i.e., ~2.5 m diameter x 10 m focal length, and even greater effective area – in the range of 75 – 2500 cm2 – with a 2.5-mdiameter prime-focus geometry; further in the future, we can hope t ...
... cm2 (depending on the wavelength) could be achieved with a moderately-sized Cassegrain-type telescope geometry, i.e., ~2.5 m diameter x 10 m focal length, and even greater effective area – in the range of 75 – 2500 cm2 – with a 2.5-mdiameter prime-focus geometry; further in the future, we can hope t ...
A S R TRATEGY
... the design, the conic constants (negative of the squared eccentricities) of the primary and secondary mirrors were chosen to yield zero third-order spherical aberration and field coma on the focal surface. (This is the Ritchey-Chrétien criterion.) The image quality of a precision optical system like ...
... the design, the conic constants (negative of the squared eccentricities) of the primary and secondary mirrors were chosen to yield zero third-order spherical aberration and field coma on the focal surface. (This is the Ritchey-Chrétien criterion.) The image quality of a precision optical system like ...
Radio Telescopes
... To see deeper and deeper into the universe, and with enhanced angular resolution and sensitivity, the size of single-dish paraboloids was enlarged (see formulae (2.1)). The postwar years initiated the race to build the world’s largest radio ...
... To see deeper and deeper into the universe, and with enhanced angular resolution and sensitivity, the size of single-dish paraboloids was enlarged (see formulae (2.1)). The postwar years initiated the race to build the world’s largest radio ...
ARGOS - The Laser Guide Star System for the LBT
... create them at low altitude. GLAO with natural guide stars has been demonstrated to work well with ESO‟s MAD instrument [10]. GLAO systems using a single Rayleigh guide star are in operation or development at the SOAR [13] and at the WHT [12]. Multiple beacon LGS GLAO has recently been demonstrated ...
... create them at low altitude. GLAO with natural guide stars has been demonstrated to work well with ESO‟s MAD instrument [10]. GLAO systems using a single Rayleigh guide star are in operation or development at the SOAR [13] and at the WHT [12]. Multiple beacon LGS GLAO has recently been demonstrated ...
Minutes SSWG_10
... Based on email discussions it was decided there will be 3 proposal periods/year, spaced around e.g. NASA spacecraft and Gemini deadlines. The PI Planning Tools will include a Phase I submission form. Phase I & II deadlines were proposed to be ~1 month apart. Larry felt that the gap between Phase I & ...
... Based on email discussions it was decided there will be 3 proposal periods/year, spaced around e.g. NASA spacecraft and Gemini deadlines. The PI Planning Tools will include a Phase I submission form. Phase I & II deadlines were proposed to be ~1 month apart. Larry felt that the gap between Phase I & ...
File
... Object beyond 2F’ (An object more than two times the distance of the focal length from the lens) Step 1.Draw a ray that is parallel to the principal axis is refracted through the principal focus (F). Step 2. Draw a ray that passes through the secondary principal focus (F') is refracted parallel to ...
... Object beyond 2F’ (An object more than two times the distance of the focal length from the lens) Step 1.Draw a ray that is parallel to the principal axis is refracted through the principal focus (F). Step 2. Draw a ray that passes through the secondary principal focus (F') is refracted parallel to ...
DAS FOCUS Newsletter_MARCH_2015
... Imaging at the Sawin on the Weekend of March 27 / 28 by Bill Hanagan The next meeting of the AP-SIG is tentatively scheduled for March 27 or 28 at 8:00 PM at MCAO. If the weather allows, we’ll pick one of these nights to head out to the Sawin and image some of the features of the 1st quarter moon. I ...
... Imaging at the Sawin on the Weekend of March 27 / 28 by Bill Hanagan The next meeting of the AP-SIG is tentatively scheduled for March 27 or 28 at 8:00 PM at MCAO. If the weather allows, we’ll pick one of these nights to head out to the Sawin and image some of the features of the 1st quarter moon. I ...
Outline Thesis – so far
... deformable mirror, imitating the laser guide star beacons. This enables the interaction between deformable mirror and wavefront sensor to be calibrated at any time, greatly enhancing the possibilities and time available for engineering on the installed system. The light source has to be placed in th ...
... deformable mirror, imitating the laser guide star beacons. This enables the interaction between deformable mirror and wavefront sensor to be calibrated at any time, greatly enhancing the possibilities and time available for engineering on the installed system. The light source has to be placed in th ...
Building large telescopes. I- Refractors.
... nineteenth century the largest reflector was the Leviathan of Parsonstown built in 1845 by William Parsons, third Earl of Rosse (Birr Castle, Ireland). During this period refractors were largely preferred by astronomers for precision work at the observatory. Apart from periodical cleaning, the optic ...
... nineteenth century the largest reflector was the Leviathan of Parsonstown built in 1845 by William Parsons, third Earl of Rosse (Birr Castle, Ireland). During this period refractors were largely preferred by astronomers for precision work at the observatory. Apart from periodical cleaning, the optic ...
image degradations of an aerodynamically shaped optical window
... the sensor non-uniformly refracts the incoming rays from their parallel trajectory, with two detrimental results: reduced optical resolution and boresight error. Optical resolution is traditionally defined as the minimum angular separation of two distant point objects necessary to recognize separate ...
... the sensor non-uniformly refracts the incoming rays from their parallel trajectory, with two detrimental results: reduced optical resolution and boresight error. Optical resolution is traditionally defined as the minimum angular separation of two distant point objects necessary to recognize separate ...
Polar Alignment in Southern Hemisphere - Downloads
... meridian. Both stars should be near the celestial equator (i.e., 0° declination). You will monitor the drift of each star one at a time and in declination only. While monitoring a star on the meridian, any misalignment in the east-west direction is revealed. While monitoring a star near the east/wes ...
... meridian. Both stars should be near the celestial equator (i.e., 0° declination). You will monitor the drift of each star one at a time and in declination only. While monitoring a star on the meridian, any misalignment in the east-west direction is revealed. While monitoring a star near the east/wes ...
S8.4 Can Photometrical Data Help To Maintain a Catalogue of
... interval of 0.2 to 10 arcsec/sec in hour angle and 0.2-20 arcsec/sec in declination angle, respectively. For observations with a 1.5 m diameter telescope in a “stare mode”, these values of the speed of the objects mean, that only the 18 -18.5 magnitude objects can be detected. Fainter objects must ...
... interval of 0.2 to 10 arcsec/sec in hour angle and 0.2-20 arcsec/sec in declination angle, respectively. For observations with a 1.5 m diameter telescope in a “stare mode”, these values of the speed of the objects mean, that only the 18 -18.5 magnitude objects can be detected. Fainter objects must ...
Astronomical Instruments
... • Optical telescopes focus light into an image in one of two ways, as displayed. – A lens bends (refracts) the light as it passes through the glass and brings it to a focus to form a small, ...
... • Optical telescopes focus light into an image in one of two ways, as displayed. – A lens bends (refracts) the light as it passes through the glass and brings it to a focus to form a small, ...
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.