Christiaan Huygens and his telescopes
... Christian Huygens kept his fascination for telescopes all his life. This can be illustrated by a remarkable incident, when during one of his trips to England in 1661 he visited the shop of the telescope maker Richard Reeves at Longacre in London. On the day of his visit the coronation of King Charle ...
... Christian Huygens kept his fascination for telescopes all his life. This can be illustrated by a remarkable incident, when during one of his trips to England in 1661 he visited the shop of the telescope maker Richard Reeves at Longacre in London. On the day of his visit the coronation of King Charle ...
AstroMaster Series Telescopes
... 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 telescope, so you should keep this manual handy until you have fully mastered your telescope’s operation. The manual gives detailed informati ...
... 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 telescope, so you should keep this manual handy until you have fully mastered your telescope’s operation. The manual gives detailed informati ...
File
... Johannes Kepler was one of the best early astronomers as well as a very capable mathematician. He was born in 1571 and died in the year 1630. Kepler declared that he built his astronomy from 'the hypotheses of Copernicus, the observations of Tycho Brahe and the magnetical science of William Gilbert ...
... Johannes Kepler was one of the best early astronomers as well as a very capable mathematician. He was born in 1571 and died in the year 1630. Kepler declared that he built his astronomy from 'the hypotheses of Copernicus, the observations of Tycho Brahe and the magnetical science of William Gilbert ...
4. Overview of combined internal and external NGAO interface
... A preliminary NGAO overall N-squared diagram is given in Figure 3. The reader should also look at the associated spread sheet, as it maybe easier to read the figures in it than this word document. For the purposes of Figure 3, the telescope, observatory facilities, and the instrument are considered ...
... A preliminary NGAO overall N-squared diagram is given in Figure 3. The reader should also look at the associated spread sheet, as it maybe easier to read the figures in it than this word document. For the purposes of Figure 3, the telescope, observatory facilities, and the instrument are considered ...
Recent modification on Lindgren Feed
... • InP HEMTS - Indium-phosphide high-electron-mobility transistors have been implemented in almost all low-noise amplifiers in radio astronomy for the past 10 years with little change in performance. They are usually cooled to 15K to reduce the noise by an order of magnitude. The noise performance fr ...
... • InP HEMTS - Indium-phosphide high-electron-mobility transistors have been implemented in almost all low-noise amplifiers in radio astronomy for the past 10 years with little change in performance. They are usually cooled to 15K to reduce the noise by an order of magnitude. The noise performance fr ...
How to Buy Your First Telescope
... In 1970, Celestron began making a telescope that took amateur astronomers by storm: the Celestron 8, or the C8 as observers soon called it. The introduction of this scope started a revolution. The orange-tubed Celestron 8 SCT had many advantages — 8 inches of aperture, light weight, better portabili ...
... In 1970, Celestron began making a telescope that took amateur astronomers by storm: the Celestron 8, or the C8 as observers soon called it. The introduction of this scope started a revolution. The orange-tubed Celestron 8 SCT had many advantages — 8 inches of aperture, light weight, better portabili ...
VIRUS Instrument Collimator Assembly
... 3.1.1 Simple optics The optical design of a VIRUS unit spectrograph is a simple off-axis Schmidt collimator coupled with a traditional Schmidt vacuum camera. The VIRUS collimator has three optics: a spherical collimator mirror, a folding flat, and a volume-phase holographic (VPH) grating. These opti ...
... 3.1.1 Simple optics The optical design of a VIRUS unit spectrograph is a simple off-axis Schmidt collimator coupled with a traditional Schmidt vacuum camera. The VIRUS collimator has three optics: a spherical collimator mirror, a folding flat, and a volume-phase holographic (VPH) grating. These opti ...
Wave Interference and Diffraction Part 3: Telescopes and Interferometry Paul Avery
... telescope (Keck) has D = 10m ...
... telescope (Keck) has D = 10m ...
how to set out an angle with the theo020 theodolite
... not change, flick the small silver lever on the lower part of the theodolite (it has a silver guard/lock mechanism over it), rotate again and check that the horizontal circle readings increase/decrease. ...
... not change, flick the small silver lever on the lower part of the theodolite (it has a silver guard/lock mechanism over it), rotate again and check that the horizontal circle readings increase/decrease. ...
Galileo galilei
... experimenting with balls, lever, and other objects while he tried to describe how they moved with mathematic equation. That makes him an idea to create an invention called Hydrostatics Balance. ...
... experimenting with balls, lever, and other objects while he tried to describe how they moved with mathematic equation. That makes him an idea to create an invention called Hydrostatics Balance. ...
Slide 1
... It has approximately fifty times better resolution (pixel area fifty or more times smaller) than the one on the left. In the Chandra image, new details-rings and jets in the region around the pulsar-provide valuable information for understanding how the pulsar transmits energy to the nebula as a who ...
... It has approximately fifty times better resolution (pixel area fifty or more times smaller) than the one on the left. In the Chandra image, new details-rings and jets in the region around the pulsar-provide valuable information for understanding how the pulsar transmits energy to the nebula as a who ...
PACS Calibration Status and Plans
... - bright fiducial stars (6) in flux range 1 Jy – 10 Jy with well modelled photospheric emission (5–10% absolute accuracy) 2) RSRF assessment - asteroids (50) in flux range 1 Jy – 500 Jy & planets (Neptune, Uranus) 3) linearity assessment - asteroids (50) in flux range 1 Jy – 500 Jy & planets (Neptun ...
... - bright fiducial stars (6) in flux range 1 Jy – 10 Jy with well modelled photospheric emission (5–10% absolute accuracy) 2) RSRF assessment - asteroids (50) in flux range 1 Jy – 500 Jy & planets (Neptune, Uranus) 3) linearity assessment - asteroids (50) in flux range 1 Jy – 500 Jy & planets (Neptun ...
GM-8 manual-05.cdr
... TRACKING RATE SELECTION The drive has four basic rates: sidereal, King (a modified sidereal rate), solar, and lunar. While solar and lunar rates are obvious, sidereal and King rates require a little more explaining. Sidereal rate is based on a single rotation of the Earth which takes 1,432.5 minutes ...
... TRACKING RATE SELECTION The drive has four basic rates: sidereal, King (a modified sidereal rate), solar, and lunar. While solar and lunar rates are obvious, sidereal and King rates require a little more explaining. Sidereal rate is based on a single rotation of the Earth which takes 1,432.5 minutes ...
The following is a supplemental addendum to the included
... your telescopes pointing accuracy after using the Last Alignment method. If the mount has not moved since the previous alignment then it is recommended to use Sync to improve the pointing accuracy of your mount. However, if the mount has been moved then changing alignment stars is the best way to re ...
... your telescopes pointing accuracy after using the Last Alignment method. If the mount has not moved since the previous alignment then it is recommended to use Sync to improve the pointing accuracy of your mount. However, if the mount has been moved then changing alignment stars is the best way to re ...
New results on a Cn2 profiler for GeMS
... Optics wide field imaging. Usually, the Cn2 profile is measured by dedicated instruments located outside of the telescope dome, or even at a different altitude than the telescope itself. Moreover, these instruments are also generally limited by their small collecting power, and they usually require ...
... Optics wide field imaging. Usually, the Cn2 profile is measured by dedicated instruments located outside of the telescope dome, or even at a different altitude than the telescope itself. Moreover, these instruments are also generally limited by their small collecting power, and they usually require ...
Swanson User Manual - Von Braun Astronomical Society
... sprays, and smoking. Both will damage optics. Do not attempt to clean the optics. The only person authorized to clean the optics is the observatory director. • Leave The Gorillas At Home. -- Although the telescope is large and massive, it does not require brute strength to operate. If the scope resi ...
... sprays, and smoking. Both will damage optics. Do not attempt to clean the optics. The only person authorized to clean the optics is the observatory director. • Leave The Gorillas At Home. -- Although the telescope is large and massive, it does not require brute strength to operate. If the scope resi ...
Solar Physics with LOFAR
... data processing and analysis in a computer offers LOFAR great flexibility. Changing the observed frequencies or moving an observation beam to another source in the sky only requires the change of some parameters for the data processing that can be quickly done, and even the introduction of new obser ...
... data processing and analysis in a computer offers LOFAR great flexibility. Changing the observed frequencies or moving an observation beam to another source in the sky only requires the change of some parameters for the data processing that can be quickly done, and even the introduction of new obser ...
Burge Proc SPIE 4840 226 - LOFT, Large Optics Fabrication and
... Size and asphericity are the factors that challenge our ability to make larger and faster mirrors for giant telescopes. Size drives the requirement for greater efficiency in manufacturing the optics. While no one is proposing to make individual segments larger than the 8 m class mirrors for which fa ...
... Size and asphericity are the factors that challenge our ability to make larger and faster mirrors for giant telescopes. Size drives the requirement for greater efficiency in manufacturing the optics. While no one is proposing to make individual segments larger than the 8 m class mirrors for which fa ...
T1000700-v2 Transmon Telescope Mirror Test Procedure
... Also, check that the reticle pattern aligns with the horizontal cross line on the Primary Mirror target--if not, the height of the Primary Mirror must be adjusted accordingly. ...
... Also, check that the reticle pattern aligns with the horizontal cross line on the Primary Mirror target--if not, the height of the Primary Mirror must be adjusted accordingly. ...
The Visible and Infrared Survey Telescope for Astronomy \(VISTA
... of the project, and an overview of the technical details of the full system including the optical design, mirrors, telescope structure, IR camera, active optics, enclosure and software. The system includes several innovative design features such as the f /1 primary mirror, the dichroic cold-baffle c ...
... of the project, and an overview of the technical details of the full system including the optical design, mirrors, telescope structure, IR camera, active optics, enclosure and software. The system includes several innovative design features such as the f /1 primary mirror, the dichroic cold-baffle c ...
How To Buy Your First Telescope
... The world’s best telescope is useless if you can’t find anything with it. Its high magnification limits the field of view. Even with a go-to drive, you’ll need a quality low-power finder scope. Most are tubes you view straight through. They flip the image but let you look toward the object, a positi ...
... The world’s best telescope is useless if you can’t find anything with it. Its high magnification limits the field of view. Even with a go-to drive, you’ll need a quality low-power finder scope. Most are tubes you view straight through. They flip the image but let you look toward the object, a positi ...
How to Buy your First Telescope
... working with a mirror, manufacturers have to polish only one surface. An apochromatic lens has between four and eight surfaces, plus you’re looking through the lenses so the glass has to be defect-free. All of this makes such lenses more expensive. Telescopes with apertures of more than 6 inches, wi ...
... working with a mirror, manufacturers have to polish only one surface. An apochromatic lens has between four and eight surfaces, plus you’re looking through the lenses so the glass has to be defect-free. All of this makes such lenses more expensive. Telescopes with apertures of more than 6 inches, wi ...
Deployment of the Hobby-Eberly Telescope wide
... Differences between the new tracker and the previous HET tracker include the provision of a center drive on the yaxis (rather than a side drive screw) and the addition of a constant-force drive (CFD) winch system as a safety measure on the y-axis. Both changes were necessitated by the significantly ...
... Differences between the new tracker and the previous HET tracker include the provision of a center drive on the yaxis (rather than a side drive screw) and the addition of a constant-force drive (CFD) winch system as a safety measure on the y-axis. Both changes were necessitated by the significantly ...
An Adaptive Secondary Mirror Demonstrator: Construction and
... isolating mandrel, with a compliant layer between, for this operation. The rear system comprising backing pate, actuators, flexures and pistons was then assembled. The following procedure was then implemented to preserve the stress free state of the mirror faceplate whilst it was attached to the act ...
... isolating mandrel, with a compliant layer between, for this operation. The rear system comprising backing pate, actuators, flexures and pistons was then assembled. The following procedure was then implemented to preserve the stress free state of the mirror faceplate whilst it was attached to the act ...
An Overview of Wide-Field-Of-View
... increases with the square of the field of view, and with the square of the system focal ratio (f/#). In real systems, the obscuration ratio is larger than this ideal value as other elements such as corrector lenses, possibly secondary or tertiary mirrors, fold mirrors, the dewar, and possibly a shut ...
... increases with the square of the field of view, and with the square of the system focal ratio (f/#). In real systems, the obscuration ratio is larger than this ideal value as other elements such as corrector lenses, possibly secondary or tertiary mirrors, fold mirrors, the dewar, and possibly a shut ...
Arecibo Observatory
The Arecibo Observatory is a radio telescope in the municipality of Arecibo, Puerto Rico. This observatory is operated by SRI International, USRA and UMET, under cooperative agreement with the National Science Foundation (NSF). This observatory is also called the National Astronomy and Ionosphere Center, although ""NAIC"" refers to both the observatory and the staff that operates it. From its construction in the 1960s until 2011, the observatory was managed by Cornell University.The Observatory's 1,000 ft (305 m) radio telescope is the world's largest single-aperture telescope. It is used in three major areas of research: radio astronomy, atmospheric science, and radar astronomy. Scientists who want to use the Arecibo Telescope submit proposals that are evaluated by an independent scientific board.The Radio Telescope has made appearances in motion picture and television productions, gaining more recognition in 1999 when it began to collect data for the SETI@home project. It has been listed on the American National Register of Historic Places beginning in 2008. It was the featured listing in the National Park Service's weekly list of October 3, 2008. The Center was named in IEEE Milestone in 2001. It has a visitors center that is open part time.