Slide 1
... Test of tracker looking through window • An SMR was measured directly at ~1 m • 1 cm thick window was inserted between the tracker and the SMR • The apparent SMR position was measured with the tracker • This was corrected for the refraction of the window • These tests showed agreement to 20 ppm, wh ...
... Test of tracker looking through window • An SMR was measured directly at ~1 m • 1 cm thick window was inserted between the tracker and the SMR • The apparent SMR position was measured with the tracker • This was corrected for the refraction of the window • These tests showed agreement to 20 ppm, wh ...
FIRSTSCOPE 60 - MODELS #21055 and #21055-DX
... The constant, mentioned above, is a relationship between your latitude and the angular distance the celestial pole is above the northern (or southern) horizon; The angular distance from the northern horizon to the north celestial pole is always equal to your latitude. To illustrate this, imagine tha ...
... The constant, mentioned above, is a relationship between your latitude and the angular distance the celestial pole is above the northern (or southern) horizon; The angular distance from the northern horizon to the north celestial pole is always equal to your latitude. To illustrate this, imagine tha ...
Marsbugs Vol. 11, No. 30
... request for viewing time on the orbiting Chandra X-ray observatory. Because X-rays are generated by extremely violent events, they provide a critical window for observing extreme stellar flare-ups of this sort. The astronomers were granted two viewing times in early and late March. Using Chandra, th ...
... request for viewing time on the orbiting Chandra X-ray observatory. Because X-rays are generated by extremely violent events, they provide a critical window for observing extreme stellar flare-ups of this sort. The astronomers were granted two viewing times in early and late March. Using Chandra, th ...
STAR ANALYSER 100 USER MANUAL PATON HAWKSLEY EDUCATION LTD
... approximately point like in the field of view. This includes stars of course and planets (provided a relatively short focal length telescope or camera lens is used). Compact planetary nebulae also make interesting targets. The STAR ANALYSER, mounted in front of a wide angle camera lens, can also rec ...
... approximately point like in the field of view. This includes stars of course and planets (provided a relatively short focal length telescope or camera lens is used). Compact planetary nebulae also make interesting targets. The STAR ANALYSER, mounted in front of a wide angle camera lens, can also rec ...
NIO-RPT-0004 - GSMT - National Optical Astronomy Observatory
... The motions of the primary mirror relative to the Cassegrain rotator axis (CR) which will cause pointing errors are translation in the X-axis, or Y axis relative to CR, and rotation about the X or Y-axis (tip or tilts) relative to the CR. Rotation about the Z-axis relative to the CR and piston relat ...
... The motions of the primary mirror relative to the Cassegrain rotator axis (CR) which will cause pointing errors are translation in the X-axis, or Y axis relative to CR, and rotation about the X or Y-axis (tip or tilts) relative to the CR. Rotation about the Z-axis relative to the CR and piston relat ...
11 01 04 Portable M Class Astro
... many science projects that utilize CCD cameras and other sensors for astrometric, photometric, and spectrographic observations. Everyone, scientists included, appreciate large aperture, high resolution, wide field-of-view, general purpose telescopes which they can transport to their favorite dark sk ...
... many science projects that utilize CCD cameras and other sensors for astrometric, photometric, and spectrographic observations. Everyone, scientists included, appreciate large aperture, high resolution, wide field-of-view, general purpose telescopes which they can transport to their favorite dark sk ...
Autocollimators 6B-LED/6D-LED
... and placed on the surface to be measured. Effective aperture of reflecting surface: 42 mm Distance between legs of mirror stand: 100 mm Wooden case provided ...
... and placed on the surface to be measured. Effective aperture of reflecting surface: 42 mm Distance between legs of mirror stand: 100 mm Wooden case provided ...
Section 7 The Electromagnetic Spectrum
... stars and supernova explosions. Many objects in space are difficult to observe because heavy clouds of gas and dust block the light they emit. But, infrared radiation passes through gas and dust. Low-temperature objects typically emit infrared radiation. Therefore, the instruments used to study thes ...
... stars and supernova explosions. Many objects in space are difficult to observe because heavy clouds of gas and dust block the light they emit. But, infrared radiation passes through gas and dust. Low-temperature objects typically emit infrared radiation. Therefore, the instruments used to study thes ...
EVALUATION OF FINNIS+ ASTRONOM<
... Academy of Finland decided to follow the suggestion by the Finnish Science and Technology Policy Council that Finnish astronomy should be evaluated. Since joining the European Union and European Space Agency (ESA) in 1995, Finland has been systematically participating in projects of European scienti ...
... Academy of Finland decided to follow the suggestion by the Finnish Science and Technology Policy Council that Finnish astronomy should be evaluated. Since joining the European Union and European Space Agency (ESA) in 1995, Finland has been systematically participating in projects of European scienti ...
Symposium on Telescope Science - Society for Astronomical Sciences
... not completely analytical as emulsion response varied and thus data sets needed to be calibrated for each new emulsion. ...
... not completely analytical as emulsion response varied and thus data sets needed to be calibrated for each new emulsion. ...
Super-Eddington outburst in a binary system: V4641 Sgr Mikhail Revnivtsev, Marat Gilfanov
... optical brightness was never observed in high mass systems • What is the difference? Super-Eddington outburst in a binary system: V4641 Sgr ...
... optical brightness was never observed in high mass systems • What is the difference? Super-Eddington outburst in a binary system: V4641 Sgr ...
WR25 Carina Nebula
... Andy Read ([email protected]) for the BGWG CAL/OPS/BG Meeting Palermo, Sicily 11-13/04/07 ...
... Andy Read ([email protected]) for the BGWG CAL/OPS/BG Meeting Palermo, Sicily 11-13/04/07 ...
Studying the Universe Studying the Universe
... are called reflecting telescopes. Light enters the telescope and is reflected from a large, curved mirror to a focal point above the mirror. A focal point is the point on the axis of a mirror or lens through which parallel light rays are focused. As shown in Figure 8, reflecting telescopes use a sec ...
... are called reflecting telescopes. Light enters the telescope and is reflected from a large, curved mirror to a focal point above the mirror. A focal point is the point on the axis of a mirror or lens through which parallel light rays are focused. As shown in Figure 8, reflecting telescopes use a sec ...
spacese.spacegrant.org
... the US Air Force to study ways to build lightweight mirrors. Based on the ASMD studies, two test mirrors were built and fully tested. One was made from beryllium by Ball Aerospace; the other was built by Kodak (now ITT) and was made from a special type of glass. A team of experts was chosen to test ...
... the US Air Force to study ways to build lightweight mirrors. Based on the ASMD studies, two test mirrors were built and fully tested. One was made from beryllium by Ball Aerospace; the other was built by Kodak (now ITT) and was made from a special type of glass. A team of experts was chosen to test ...
OORT CLOUD EXPLORER - DYNAMIC OCCULTATION
... lar applications. This optical design is near the limit that can be provided within the mass and volume constraints of a microsatellite secondary launch slot. The OCLE-DOCLE concept design relies on the availability of a new class of emerging CMOS imaging devices being developed for high-speed scien ...
... lar applications. This optical design is near the limit that can be provided within the mass and volume constraints of a microsatellite secondary launch slot. The OCLE-DOCLE concept design relies on the availability of a new class of emerging CMOS imaging devices being developed for high-speed scien ...
Astrograph Technical
... ASA Newtonian astrographs all use a fast optical system (hence a small f/#) and are capable of working at multiple focal lengths. This means you can achieve good signal-to-noise ratio with your CCD using short exposure times. The N-series astrographs all have a natural focal ratio of f/3.8, without ...
... ASA Newtonian astrographs all use a fast optical system (hence a small f/#) and are capable of working at multiple focal lengths. This means you can achieve good signal-to-noise ratio with your CCD using short exposure times. The N-series astrographs all have a natural focal ratio of f/3.8, without ...
Appendix B-Collimation - Backyard Astronomer`s Guide
... on the lens can help remove stains. 5. Use a dry swab or cotton ball for a final cleaning of moist areas, plus some more air puffs to blow off the bits of tissue that inevitably remain. A few smears might remain, but a final polish with a light condensation from your own breath will restore the pris ...
... on the lens can help remove stains. 5. Use a dry swab or cotton ball for a final cleaning of moist areas, plus some more air puffs to blow off the bits of tissue that inevitably remain. A few smears might remain, but a final polish with a light condensation from your own breath will restore the pris ...
Wave Interference and Diffraction Part 3: Telescopes and Interferometry Paul Avery
... Compare to 0.25” for best earthbound telescope, 0.06” for Hubble ...
... Compare to 0.25” for best earthbound telescope, 0.06” for Hubble ...
Camera and focal reducer Hyades comparisons
... Comparing Figures 1 and 5, and Figures 2 and 6, show that the Supercircuits PC164C-EX2 and RunCam Night Eagle have similar sensitivity, but with the Night Eagle having 4/3rds the scale, and about 1.75 times the area, of the PC164C-EX2, it has a significant advantage (wider field of view) relative to ...
... Comparing Figures 1 and 5, and Figures 2 and 6, show that the Supercircuits PC164C-EX2 and RunCam Night Eagle have similar sensitivity, but with the Night Eagle having 4/3rds the scale, and about 1.75 times the area, of the PC164C-EX2, it has a significant advantage (wider field of view) relative to ...
The Cook Memorial Library
... The Moon is one of the easiest and most interesting targets to view with your telescope. Lunar craters, “seas”, and even mountain ranges can all be clearly seen from a distance of 238,000 miles away! With its ever-changing phases, you’ll get a new view of the Moon every night it’s up. Make sure to o ...
... The Moon is one of the easiest and most interesting targets to view with your telescope. Lunar craters, “seas”, and even mountain ranges can all be clearly seen from a distance of 238,000 miles away! With its ever-changing phases, you’ll get a new view of the Moon every night it’s up. Make sure to o ...
J.Marque: Mode matching of the Virgo FP cavities
... cavity eigenmodes (radius of curvature of the mirrors of the cavity, length of the cavity). o This action can be performed by adjusting the position of the various optical elements of the telescope. o The input bench telescope has been designed to match the input beam to the FP cavities and minimize ...
... cavity eigenmodes (radius of curvature of the mirrors of the cavity, length of the cavity). o This action can be performed by adjusting the position of the various optical elements of the telescope. o The input bench telescope has been designed to match the input beam to the FP cavities and minimize ...
White Paper on the Revival of Stellar Intensity Interferometry E. Ribak S. LeBohec
... object, |γ(d)|2 = 1. In the case of a source that can be modeled as a uniform disk with angular diameter θ, the various baselines used in the observation sample an Airy function on the ground. For observations at wavelength λ, the degree of coherence γ(d) cancels when d = 1.22λ/θ. An interferometer ...
... object, |γ(d)|2 = 1. In the case of a source that can be modeled as a uniform disk with angular diameter θ, the various baselines used in the observation sample an Airy function on the ground. For observations at wavelength λ, the degree of coherence γ(d) cancels when d = 1.22λ/θ. An interferometer ...
Postgraduate English - Durham University Community
... optics, which lies exactly between the incident ray (the incoming light ray) and the reflected ray that is reflected off the surface of the mirror. Bishop’s inclusion of this line is not particularly significant on its own, as this reflective law is quite simple to observe. Yet she includes further ...
... optics, which lies exactly between the incident ray (the incoming light ray) and the reflected ray that is reflected off the surface of the mirror. Bishop’s inclusion of this line is not particularly significant on its own, as this reflective law is quite simple to observe. Yet she includes further ...
XMM-Newton
The XMM-Newton, also known as the X-ray Multi-Mirror Mission and the High Throughput X-ray Spectroscopy Mission, is an orbiting X-ray observatory launched by ESA in December 1999 on an Ariane 5 rocket. It is named in honor of Sir Isaac Newton. The telescope was placed in a very eccentric 48 hour elliptical orbit at 40°; at its apogee it is nearly 114,000 kilometres (71,000 mi) from Earth, while the perigee is only 7,000 kilometres (4,300 mi).