this owner`s manual for Apertura dobs
... Tensioning Screw Full speed adjustment wheel Locking Screw 1/10 speed adjustment wheel The scale on top shows the The Apertura focuser will focuser drawtube fully extended accept 2“ and 1.25” eyepieces to 4cm or 1.5”. !! IMPORTANT !! (with included adapter) and Locking screw (under tensioning other ...
... Tensioning Screw Full speed adjustment wheel Locking Screw 1/10 speed adjustment wheel The scale on top shows the The Apertura focuser will focuser drawtube fully extended accept 2“ and 1.25” eyepieces to 4cm or 1.5”. !! IMPORTANT !! (with included adapter) and Locking screw (under tensioning other ...
Part 2 : Use of CCD cameras
... present in such an image, two pixels must fit across the stellar image; the pixels must subtend at most 0.3 arc-seconds on the sky. This is the ‘Nyquist criteria’. If the pixels are larger than 0.3 arc-seconds the Nyquist criteria is not met, the image is under-sampled and information is lost. The N ...
... present in such an image, two pixels must fit across the stellar image; the pixels must subtend at most 0.3 arc-seconds on the sky. This is the ‘Nyquist criteria’. If the pixels are larger than 0.3 arc-seconds the Nyquist criteria is not met, the image is under-sampled and information is lost. The N ...
X-ray binaries
... Many sources are found in globular clusters. Also there are more and more LMXBs found in more distant galaxies. In optics the emission is dominated by an accretion disc around a compact object. Clear classification is based on optical data or on mass function derived from X-ray observations. If a so ...
... Many sources are found in globular clusters. Also there are more and more LMXBs found in more distant galaxies. In optics the emission is dominated by an accretion disc around a compact object. Clear classification is based on optical data or on mass function derived from X-ray observations. If a so ...
22 Chapter
... curved inward like a bowl and located at the base of the telescope. • The light is reflected off the interior surface of the bowl to the focal point where it forms an image. ...
... curved inward like a bowl and located at the base of the telescope. • The light is reflected off the interior surface of the bowl to the focal point where it forms an image. ...
Space Unit notes
... Satellites are designed to perform one of four functions: Communication - provide ‘wireless’ technologies for a wide range of applications. Digital signals have resulted in clearer communications and more users. Observation and Research - A geosynchronous orbit is one that enables a satellite to re ...
... Satellites are designed to perform one of four functions: Communication - provide ‘wireless’ technologies for a wide range of applications. Digital signals have resulted in clearer communications and more users. Observation and Research - A geosynchronous orbit is one that enables a satellite to re ...
4.1 Detectability of extrasolar planets
... survey in less time. The ultimate contrast floor, however, will likely be set by internal aberrations, whose effect is roughly independent of telescope size; in this situation, the 50-m telescope would not discover any significant number of planets inaccessible to the 30-m, it would merely discover ...
... survey in less time. The ultimate contrast floor, however, will likely be set by internal aberrations, whose effect is roughly independent of telescope size; in this situation, the 50-m telescope would not discover any significant number of planets inaccessible to the 30-m, it would merely discover ...
Alignment of the 1.6 meter off-axis New Solar Telescope at Big Bear
... be made to minimize vibrations and flexure without concern for its bulky size. Third, the prime focus field stop and heat reflector (heat-stop) are also configured off the solar beam. As a result, complicated cooling system and services have access to the heat-stop without obstructing the light path. Fou ...
... be made to minimize vibrations and flexure without concern for its bulky size. Third, the prime focus field stop and heat reflector (heat-stop) are also configured off the solar beam. As a result, complicated cooling system and services have access to the heat-stop without obstructing the light path. Fou ...
Schmidt-Cassegrain Optical Tube Assembly
... catadioptric telescope. This unique design offers large-diameter optics while maintaining very short tube lengths, making them extremely portable. The Schmidt-Cassegrain system consists of a zero power corrector plate, a spherical primary mirror, and a secondary mirror. Once light rays enter the opt ...
... catadioptric telescope. This unique design offers large-diameter optics while maintaining very short tube lengths, making them extremely portable. The Schmidt-Cassegrain system consists of a zero power corrector plate, a spherical primary mirror, and a secondary mirror. Once light rays enter the opt ...
The wide field upgrade for the Hobby-Eberly Telescope
... 2. Current status of HET The HET is operating close to its original specifications, and in many areas, such as mirror alignment hold time, it significantly exceeds specifications. One important performance exception has been the delivered image quality. While much improved over recent years, over th ...
... 2. Current status of HET The HET is operating close to its original specifications, and in many areas, such as mirror alignment hold time, it significantly exceeds specifications. One important performance exception has been the delivered image quality. While much improved over recent years, over th ...
Light: The Cosmic Messenger
... • Sun appears distorted at sunset because of how light bends in Earth’s atmosphere. © 2010 Pearson Education, Inc. ...
... • Sun appears distorted at sunset because of how light bends in Earth’s atmosphere. © 2010 Pearson Education, Inc. ...
class slides for Chapter 3
... Much can be learned from observing the same astronomical object at many wavelengths. Here, the Milky Way. © 2013 Pearson Education, Inc. ...
... Much can be learned from observing the same astronomical object at many wavelengths. Here, the Milky Way. © 2013 Pearson Education, Inc. ...
G-CLEF Summary
... Several distinct fiber feeds that provide a variety of observational capabilities. One set of fibers runs to the telescope interface (“front end”) on the IP, all of which are for single-object observations. A second set of fibers, supplied by the MANIFEST MOS team, run to a MANIFEST feed at the Greg ...
... Several distinct fiber feeds that provide a variety of observational capabilities. One set of fibers runs to the telescope interface (“front end”) on the IP, all of which are for single-object observations. A second set of fibers, supplied by the MANIFEST MOS team, run to a MANIFEST feed at the Greg ...
01 - University of Warwick
... Why is 2003 EL61 spinning fast, shaped like a football, Here is an image of the satellite from the night of 30 June made out of ice-covered rock, and surrounded by tiny satel2005. 2003 EL 61 is the bright object in the center and the lites? satellite appears directly below about 0.5 arcseconds. To t ...
... Why is 2003 EL61 spinning fast, shaped like a football, Here is an image of the satellite from the night of 30 June made out of ice-covered rock, and surrounded by tiny satel2005. 2003 EL 61 is the bright object in the center and the lites? satellite appears directly below about 0.5 arcseconds. To t ...
Fourth Week. - UNLV Physics
... Digital cameras detect light with charge-coupled devices (CCDs). ...
... Digital cameras detect light with charge-coupled devices (CCDs). ...
1 km
... ─ Doppler Michelson Interferometer (DMI) measurement of upper atmospheric winds Extending the DMI technique to measuring of tropospheric winds is challenging ─ Observing absorption feature in presence of large background flux reduces sensitivity of interferogram to wind signal (higher SNR is require ...
... ─ Doppler Michelson Interferometer (DMI) measurement of upper atmospheric winds Extending the DMI technique to measuring of tropospheric winds is challenging ─ Observing absorption feature in presence of large background flux reduces sensitivity of interferogram to wind signal (higher SNR is require ...
CElEstron C6 - Astronomy Magazine
... Piscium, at magnifications up to 300x with I selected Jupiter as my first target. Images a 5mm eyepiece in place. Jupiter also held through the C6 proved impressive. Jupiter’s its own at that magnification, although, atmosphere showed great detail. I clearly because of sky conditions, the view was b ...
... Piscium, at magnifications up to 300x with I selected Jupiter as my first target. Images a 5mm eyepiece in place. Jupiter also held through the C6 proved impressive. Jupiter’s its own at that magnification, although, atmosphere showed great detail. I clearly because of sky conditions, the view was b ...
The LAMA prototype telescope - UBC
... coherent array of six 6.15-m liquid mirrors. Like LAMA, each telescope would be provided with tracking optics, pathlength equalization, phase tracking and adaptive systems. The beam combiner, consisting of six concave adaptive mirrors, would have the Fizeau geometry enabling wide-field interferometr ...
... coherent array of six 6.15-m liquid mirrors. Like LAMA, each telescope would be provided with tracking optics, pathlength equalization, phase tracking and adaptive systems. The beam combiner, consisting of six concave adaptive mirrors, would have the Fizeau geometry enabling wide-field interferometr ...
Poster VLF GRBs - INFN-LNF
... important role, as the detection of X-ray and gamma-ray triggers is based on the measuremeńt (monitoring) of reflected radio waves from this layer. The ionospheric D layer is not transparent for radio VLF waves (frequencies 3kHz to 30 kHz) and behaves like a mirror. • If the transmitter is at large ...
... important role, as the detection of X-ray and gamma-ray triggers is based on the measuremeńt (monitoring) of reflected radio waves from this layer. The ionospheric D layer is not transparent for radio VLF waves (frequencies 3kHz to 30 kHz) and behaves like a mirror. • If the transmitter is at large ...
Document
... Often the increase in mission complexity of flying an active laser system to the planets limits the opportunities for attempting laser tracking of planetary spacecraft. The best and most accurate method is generally considered to be the transponder approach that involves active laser systems at both ...
... Often the increase in mission complexity of flying an active laser system to the planets limits the opportunities for attempting laser tracking of planetary spacecraft. The best and most accurate method is generally considered to be the transponder approach that involves active laser systems at both ...
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).