Invited Paper - Giant Magellan Telescope Organization
... The segmented structure of the GMT secondary mirrors allows us to use much of the engineering and experience from the LBT adaptive secondary mirrors and the VLT adaptive secondary14 with minimal risk and evolution. As described below and elsewhere in these proceedings, we are progressing through the ...
... The segmented structure of the GMT secondary mirrors allows us to use much of the engineering and experience from the LBT adaptive secondary mirrors and the VLT adaptive secondary14 with minimal risk and evolution. As described below and elsewhere in these proceedings, we are progressing through the ...
PDF only - at www.arxiv.org.
... be used to inspire and motivate students to pursue careers in science, technology, engineering, and mathematics. Though historically not always this way, the program currently administers only Principal Investigator (PI)-led science investigations for the Heliophysics and Astrophysics Divisions of N ...
... be used to inspire and motivate students to pursue careers in science, technology, engineering, and mathematics. Though historically not always this way, the program currently administers only Principal Investigator (PI)-led science investigations for the Heliophysics and Astrophysics Divisions of N ...
Custom Solutions Catalog
... lead to delays in job completion and incorrect mounting. Practitioners are expected to complete the mounting order form fully for all jobs requested. Slight deviations in telescope centering and height should be expected. It is advised, therefore, that the frames selected to carry the mounted telesc ...
... lead to delays in job completion and incorrect mounting. Practitioners are expected to complete the mounting order form fully for all jobs requested. Slight deviations in telescope centering and height should be expected. It is advised, therefore, that the frames selected to carry the mounted telesc ...
the eye of the beholder: designing the owl
... wavefront control, adaptive optics. Optical segmentation, demonstrated in the Keck and Hobby-Eberly, eliminates the traditional limit imposed by the slowly evolving processes of producing large, homogeneous optical subtrates. With spherical mirror designs, the same applies to polishing. Active wavef ...
... wavefront control, adaptive optics. Optical segmentation, demonstrated in the Keck and Hobby-Eberly, eliminates the traditional limit imposed by the slowly evolving processes of producing large, homogeneous optical subtrates. With spherical mirror designs, the same applies to polishing. Active wavef ...
Small Wonders: Canes Venatici
... Actually, what you're really looking at here is a pair of interacting galaxies - 4490 AND 4485. Also called the Cocoon, this object is located less than a degree WNW of Beta Canum Venaticorum. The larger galaxy is also the brighter at mag 9.5, while 4485 is at 11.7. Thus it's quite possible, dependi ...
... Actually, what you're really looking at here is a pair of interacting galaxies - 4490 AND 4485. Also called the Cocoon, this object is located less than a degree WNW of Beta Canum Venaticorum. The larger galaxy is also the brighter at mag 9.5, while 4485 is at 11.7. Thus it's quite possible, dependi ...
July - Rose City Astronomers
... a registration form (no fees involved) and then waiting a few days for your observer initials to be emailed to you: Therefore, for the most part, the Astrophysicist's are pretty much dependent upon world wide amateur contributors to report the necessary data to the 94 year old AAVSO organization to ...
... a registration form (no fees involved) and then waiting a few days for your observer initials to be emailed to you: Therefore, for the most part, the Astrophysicist's are pretty much dependent upon world wide amateur contributors to report the necessary data to the 94 year old AAVSO organization to ...
instruction manual
... objects can be quickly located and brought to the centre of the field. Alignment is best done outdoors in day light when it's easier to locate objects. If it is necessary to refocus your finderscope, sight on an object that is at least 500 yards (metres) away. For 5x24 finderscope: twist the end of ...
... objects can be quickly located and brought to the centre of the field. Alignment is best done outdoors in day light when it's easier to locate objects. If it is necessary to refocus your finderscope, sight on an object that is at least 500 yards (metres) away. For 5x24 finderscope: twist the end of ...
Debris Belts around Vega - Astronomical Society of the Pacific
... emission produced by the star itself, leaving the emission radiated by surrounding dust particles warmed by the star. ...
... emission produced by the star itself, leaving the emission radiated by surrounding dust particles warmed by the star. ...
July-August 2015 - Nottingham Astronomical Society
... lengths and focal ratios. These terms are briefly outlined below. Come and say hello. Equipment basics: Focal length, focal ratio, field of view The focal length of a telescope is measured in millimetres (mm) and is the distance from the first optical surface the light hits (the objective lens in a ...
... lengths and focal ratios. These terms are briefly outlined below. Come and say hello. Equipment basics: Focal length, focal ratio, field of view The focal length of a telescope is measured in millimetres (mm) and is the distance from the first optical surface the light hits (the objective lens in a ...
Burge Proc SPIE 4840 226 - LOFT, Large Optics Fabrication and
... as in the 20/20 concept. We find that fabrication and alignment methods for telescopes using numerous small (1-m class) segments are driven to long focal ratios, while those using few large, actively controlled segments can be made as fast as f/0.5. Keywords: Telescope, astronomical optics, optical ...
... as in the 20/20 concept. We find that fabrication and alignment methods for telescopes using numerous small (1-m class) segments are driven to long focal ratios, while those using few large, actively controlled segments can be made as fast as f/0.5. Keywords: Telescope, astronomical optics, optical ...
Hubble - 15 Years of Discovery
... stars to be an object within the Solar System. Estimates show that it could be about the size of a planet and it has been named Sedna, after an Inuit goddess. Sedna may be 1500 km in diameter, that’s about three quarters the size of Pluto, but it is so far away that it appears as just a small cluste ...
... stars to be an object within the Solar System. Estimates show that it could be about the size of a planet and it has been named Sedna, after an Inuit goddess. Sedna may be 1500 km in diameter, that’s about three quarters the size of Pluto, but it is so far away that it appears as just a small cluste ...
doc - Eu-Hou
... This document describes the possibilities of the instrument and instruction on how to use it. The Astropeiler Stockert e.V. is hoping that the opportunity to use such an unique instrument “hands on” will be inspiring to both teachers and ...
... This document describes the possibilities of the instrument and instruction on how to use it. The Astropeiler Stockert e.V. is hoping that the opportunity to use such an unique instrument “hands on” will be inspiring to both teachers and ...
Missions
... form of different types of electromagnetic radiation. Only a small fraction of this is visible from the Earth (white areas) as the atmosphere absorbs the rest before it reaches the ground (black areas). Water vapour, ozone and carbon dioxide in the atmosphere absorb large parts of the infrared spect ...
... form of different types of electromagnetic radiation. Only a small fraction of this is visible from the Earth (white areas) as the atmosphere absorbs the rest before it reaches the ground (black areas). Water vapour, ozone and carbon dioxide in the atmosphere absorb large parts of the infrared spect ...
User Manual Explore Scientific Truss Tube Dobsonian Telescopes
... because the off-axis aberrations of the telescope and the eyepiece will add up. For this reason it is essential to recenter Polaris after every turn of a collimation screw – because the turning of the screw will also shift the star from its centered position. As mentioned before it may not be possib ...
... because the off-axis aberrations of the telescope and the eyepiece will add up. For this reason it is essential to recenter Polaris after every turn of a collimation screw – because the turning of the screw will also shift the star from its centered position. As mentioned before it may not be possib ...
ESA BR-170 - ESA Science
... form of different types of electromagnetic radiation. Only a small fraction of this is visible from the Earth (white areas) as the atmosphere absorbs the rest before it reaches the ground (black areas). Water vapour, ozone and carbon dioxide in the atmosphere absorb large parts of the infrared spect ...
... form of different types of electromagnetic radiation. Only a small fraction of this is visible from the Earth (white areas) as the atmosphere absorbs the rest before it reaches the ground (black areas). Water vapour, ozone and carbon dioxide in the atmosphere absorb large parts of the infrared spect ...
HD 140283: A Star in the Solar Neighborhood that Formed Shortly
... 2011 March, at dates close to the biannual times of maximum parallax factor. The FGS are interferometers that, in addition to providing guiding control during imaging or spectroscopic observations, can measure precise positions of a target star and several surrounding astrometric reference stars wit ...
... 2011 March, at dates close to the biannual times of maximum parallax factor. The FGS are interferometers that, in addition to providing guiding control during imaging or spectroscopic observations, can measure precise positions of a target star and several surrounding astrometric reference stars wit ...
May 2017 - Bays Mountain Park
... Comet 41P Tuttle-Giacobini-Kresak on April 2, 2017 The bright star is Thuban; FOV 1.65° x 2.48°; ISO1600, 30s, 130mm refractor, f.l. 819mm, f/6.3 The sky was poor with haze and humidity and the almost first-quarter Moon up. This forced me to a short exposure to keep the sky brightness down. You can ...
... Comet 41P Tuttle-Giacobini-Kresak on April 2, 2017 The bright star is Thuban; FOV 1.65° x 2.48°; ISO1600, 30s, 130mm refractor, f.l. 819mm, f/6.3 The sky was poor with haze and humidity and the almost first-quarter Moon up. This forced me to a short exposure to keep the sky brightness down. You can ...
Instruction Manual
... Place the center bearing bushing into the countersunk hole of the ground plate. Slide the three roller bearing plates over the center bearing bushing: First the roller bearing plate, then the roller bearing itself (the plate that looks alike a wagon wheel), then the second roller bearing plate. Plac ...
... Place the center bearing bushing into the countersunk hole of the ground plate. Slide the three roller bearing plates over the center bearing bushing: First the roller bearing plate, then the roller bearing itself (the plate that looks alike a wagon wheel), then the second roller bearing plate. Plac ...
Is Pluto Real - Jesseca Rough
... heat and discarded the math stuff completely. I also would have invited more people because we actually had a fun time and my stage fright was gone by the end of it. The Lessons: What I learned the most about this project was how much teaching teaches you. I am an expert now (or at least I will get ...
... heat and discarded the math stuff completely. I also would have invited more people because we actually had a fun time and my stage fright was gone by the end of it. The Lessons: What I learned the most about this project was how much teaching teaches you. I am an expert now (or at least I will get ...
The Classical Achromat
... at sharp focus. At this focal ratio, our 3-in. refractor should display little or no false color when sharply focused. You’ll probably see a faint violet halo around the brightest stars, but that’s quite normal. Now rack the focuser outward until the image of the star takes on the form of a bright c ...
... at sharp focus. At this focal ratio, our 3-in. refractor should display little or no false color when sharply focused. You’ll probably see a faint violet halo around the brightest stars, but that’s quite normal. Now rack the focuser outward until the image of the star takes on the form of a bright c ...
AstroMaster Series Telescopes
... dovetail bracket in the horizontal position as shown in Figure 2-10. This will ensure that the mount does not move suddenly while attaching the telescope optical tube. Also, remove the objective lens cap (refractor) or the front opening cap (Newtonian). To mount the telescope tube: 1 Remove the prot ...
... dovetail bracket in the horizontal position as shown in Figure 2-10. This will ensure that the mount does not move suddenly while attaching the telescope optical tube. Also, remove the objective lens cap (refractor) or the front opening cap (Newtonian). To mount the telescope tube: 1 Remove the prot ...
Highlights of the Poster Session - Indico
... the universe since the Big Bang. They are flashes of gamma rays coming from seemingly random places in deep space at random times. GRBs last from milliseconds to minutes, often followed by an afterglow emission at longer wavelengths (X-ray, UV, optical, IR, and radio). Gamma-ray bursts are detected ...
... the universe since the Big Bang. They are flashes of gamma rays coming from seemingly random places in deep space at random times. GRBs last from milliseconds to minutes, often followed by an afterglow emission at longer wavelengths (X-ray, UV, optical, IR, and radio). Gamma-ray bursts are detected ...
James Webb Space Telescope
The James Webb Space Telescope (JWST), previously known as Next Generation Space Telescope (NGST), is a space observatory under construction and scheduled to launch in October 2018. The JWST will offer unprecedented resolution and sensitivity from long-wavelength visible to the mid-infrared, and is a successor instrument to the Hubble Space Telescope and the Spitzer Space Telescope. The telescope features a segmented 6.5-meter (21 ft) diameter primary mirror and will be located near the Earth–Sun L2 point. A large sunshield will keep its mirror and four science instruments below 50 K (−220 °C; −370 °F).JWST's capabilities will enable a broad range of investigations across the fields of astronomy and cosmology. One particular goal involves observing some of the most distant objects in the Universe, beyond the reach of current ground and space based instruments. This includes the very first stars, the epoch of reionization, and the formation of the first galaxies. Another goal is understanding the formation of stars and planets. This will include imaging molecular clouds and star-forming clusters, studying the debris disks around stars, direct imaging of planets, and spectroscopic examination of planetary transits.In gestation since 1996, the project represents an international collaboration of about 17 countries led by NASA, and with significant contributions from the European Space Agency and the Canadian Space Agency. It is named after James E. Webb, the second administrator of NASA, who played an integral role in the Apollo program.The JWST has a history of major cost overruns and delays. The first realistic budget estimates were that the observatory would cost $1.6 billion and launch in 2011. NASA has now scheduled the telescope for a 2018 launch. In 2011, the United States House of Representatives voted to terminate funding, after about $3 billion had been spent and 75 percent of its hardware was in production. Funding was restored in compromise legislation with the US Senate, and spending on the program was capped at $8 billion. As of December 2014, the telescope remained on schedule and within budget, but at risk of further delays.