Astronomy - Troop 179
... a. List the names of the five most visible planets. Explain which ones can appear in phases similar to lunar phases and which ones cannot, and explain why. b. Find out when each of the five most visible planets that you identified in requirement 5a will be observable in the evening sky during the ne ...
... a. List the names of the five most visible planets. Explain which ones can appear in phases similar to lunar phases and which ones cannot, and explain why. b. Find out when each of the five most visible planets that you identified in requirement 5a will be observable in the evening sky during the ne ...
fred`s 2017 astronomy challenge
... How to find: This is, even weather permitting, likely to be the hardest object to see for the amateur. More experienced members will be asked to help others in difficulty locating it. Altho ...
... How to find: This is, even weather permitting, likely to be the hardest object to see for the amateur. More experienced members will be asked to help others in difficulty locating it. Altho ...
How to Directly Image a Habitable Planet Around Alpha Centauri
... Thus, in order to achieve the 1010 contrasts to directly image potentially habitable planets around Sun-like stars, high contrast space telescopes (blue region in Figure 1) appear to be necessary. High contrast space telescopes in the 1 - 2.4m size range are realistic for launch in the 2020 decade, ...
... Thus, in order to achieve the 1010 contrasts to directly image potentially habitable planets around Sun-like stars, high contrast space telescopes (blue region in Figure 1) appear to be necessary. High contrast space telescopes in the 1 - 2.4m size range are realistic for launch in the 2020 decade, ...
story of telescope
... time, and the history of ideas in human thought is no exception. But one particular event stands out above all in the history of science. In July 1609, Galileo Galilei used an instrument to look at stars, and the discoveries he reported changed not only the face of astronomy, but also that of scienc ...
... time, and the history of ideas in human thought is no exception. But one particular event stands out above all in the history of science. In July 1609, Galileo Galilei used an instrument to look at stars, and the discoveries he reported changed not only the face of astronomy, but also that of scienc ...
script (powerpoint)
... stellar objects, etc. Can get 1/20 arcsecond resolution in the K band, 1/100 in the visible (eventually) ...
... stellar objects, etc. Can get 1/20 arcsecond resolution in the K band, 1/100 in the visible (eventually) ...
Answers to exam style questions
... output of a star and its surface area has often been tested in this option in the past. It is important to make sure that the correct constant is chosen from the list on the data sheet. Notice there are two routes to the answer – choose whichever one you find more straightforward. The difference in ...
... output of a star and its surface area has often been tested in this option in the past. It is important to make sure that the correct constant is chosen from the list on the data sheet. Notice there are two routes to the answer – choose whichever one you find more straightforward. The difference in ...
Visual Double Star Measurements with Equatorial - Alt
... telescope is moved so that the primary star accurately drifts through the central division mark. In practice, the primary is situated about 5-8 division marks away from the central mark and allowed to drift. If the star drifts through the central mark, the drift sequence is allowed to continue until ...
... telescope is moved so that the primary star accurately drifts through the central division mark. In practice, the primary is situated about 5-8 division marks away from the central mark and allowed to drift. If the star drifts through the central mark, the drift sequence is allowed to continue until ...
Properties of Supernovae
... Supernovae are rare events, occurring only once or twice per century in a typical galaxy. There have been just six supernovae seen in the Milky Way in recorded history, with the most recent occurring in 1604, just before the advent of telescopes. The perceptive reader will notice that this rate is m ...
... Supernovae are rare events, occurring only once or twice per century in a typical galaxy. There have been just six supernovae seen in the Milky Way in recorded history, with the most recent occurring in 1604, just before the advent of telescopes. The perceptive reader will notice that this rate is m ...
Lecture 2: ppt, 5 MB
... Hubble has taken more than 700,000 exposures and probed more than 22,000 celestial objects. Hubble has whirled around Earth nearly 88,000 times, racking up 2.3 billion miles. The telescope's observations have produced 23 terabytes of data, equal to the amount of text in 23 million novels. The ...
... Hubble has taken more than 700,000 exposures and probed more than 22,000 celestial objects. Hubble has whirled around Earth nearly 88,000 times, racking up 2.3 billion miles. The telescope's observations have produced 23 terabytes of data, equal to the amount of text in 23 million novels. The ...
3.7 Isotope Effect - Institute for Astronomy | ETH
... transparent only in the optical, in selected windows in the near infrared and in a broad radio wavelength region. Most of the infrared light reaching us from space is absorbed by molecular bands due to water vapor and carbon dioxide in the Earth's atmosphere. Radiation with shorter wavelengths than ...
... transparent only in the optical, in selected windows in the near infrared and in a broad radio wavelength region. Most of the infrared light reaching us from space is absorbed by molecular bands due to water vapor and carbon dioxide in the Earth's atmosphere. Radiation with shorter wavelengths than ...
1 NOTES ON GALILEO Galileo was born in Pisa of the famous
... could look at the sky and make observations. Galileo first heard about telescopes in the summer of 1609. They were at that time regarded as backyard toys fjor children, with a power (magnification) of about 3 or 4. Since about the 14th century, magnifying glasses had been used to aid the reading of ...
... could look at the sky and make observations. Galileo first heard about telescopes in the summer of 1609. They were at that time regarded as backyard toys fjor children, with a power (magnification) of about 3 or 4. Since about the 14th century, magnifying glasses had been used to aid the reading of ...
Lecture 9 - Notes on Galileo
... could look at the sky and make observations. Galileo first heard about telescopes in the summer of 1609. They were at that time regarded as backyard toys fjor children, with a power (magnification) of about 3 or 4. Since about the 14th century, magnifying glasses had been used to aid the reading of ...
... could look at the sky and make observations. Galileo first heard about telescopes in the summer of 1609. They were at that time regarded as backyard toys fjor children, with a power (magnification) of about 3 or 4. Since about the 14th century, magnifying glasses had been used to aid the reading of ...
Observers` Forum - British Astronomical Association
... on various mounts for nearly 35 years, the change to a computer controlled telescope had been, for me, a major one. The Meade was of exceptional quality with excellent GOTO, but I found it extremely difficult to use in the broken cloudy skies which make up most of our clear sky quota. Chasing holes ...
... on various mounts for nearly 35 years, the change to a computer controlled telescope had been, for me, a major one. The Meade was of exceptional quality with excellent GOTO, but I found it extremely difficult to use in the broken cloudy skies which make up most of our clear sky quota. Chasing holes ...
aberrations - SJGC Kurnool College
... Arranging two converging lenses coaxially Two convex lenses made up of by same material arranged coaxially at a distance of d = f1+f2 ...
... Arranging two converging lenses coaxially Two convex lenses made up of by same material arranged coaxially at a distance of d = f1+f2 ...
September 2011 - Newbury Astronomical Society
... the beginner to astronomy. There will also be a monthly series of articles providing advice and help on the various instruments and equipment available to the modern amateur astronomer. This month we will be thinking about observing the Moon with basic equipment namely the Mk.1 eyeball and binocular ...
... the beginner to astronomy. There will also be a monthly series of articles providing advice and help on the various instruments and equipment available to the modern amateur astronomer. This month we will be thinking about observing the Moon with basic equipment namely the Mk.1 eyeball and binocular ...
TRAPPIST: TRAnsiting Planets and PlanetesImals Small Telescope
... to Belgium and transferred to the archive machine. The telescope is a 60-cm f/8 Ritchey– Chrétien design built by the German ASTELCO company (see Figure 2). Owing to its open design with carbon fibre and ...
... to Belgium and transferred to the archive machine. The telescope is a 60-cm f/8 Ritchey– Chrétien design built by the German ASTELCO company (see Figure 2). Owing to its open design with carbon fibre and ...
paper
... to Belgium and transferred to the archive machine. The telescope is a 60-cm f/8 Ritchey– Chrétien design built by the German ASTELCO company (see Figure 2). Owing to its open design with carbon fibre and ...
... to Belgium and transferred to the archive machine. The telescope is a 60-cm f/8 Ritchey– Chrétien design built by the German ASTELCO company (see Figure 2). Owing to its open design with carbon fibre and ...
PanEOS A first data characterization
... Russian Space Agency ROSCOSMOS an “Optical-Electronic Complex for Detection and Measurement of the Movement Parameters of Space Debris” (OEC DSD), also known as “PanEOS” (abbreviation to be used throughout this document), is currently being installed at the Observatory do Pico dos Dias (OPD). This i ...
... Russian Space Agency ROSCOSMOS an “Optical-Electronic Complex for Detection and Measurement of the Movement Parameters of Space Debris” (OEC DSD), also known as “PanEOS” (abbreviation to be used throughout this document), is currently being installed at the Observatory do Pico dos Dias (OPD). This i ...
Untitled - Kapteyn Astronomical Institute
... One of the four biggest telescopes used for European space research: the Very Large Telescope. Each telescope has a mirror which has a diameter of 8 meters. The mirrors are used to receive both visible and infrared light. Why does this telescope have such a big mirror (8 meters!)? __________________ ...
... One of the four biggest telescopes used for European space research: the Very Large Telescope. Each telescope has a mirror which has a diameter of 8 meters. The mirrors are used to receive both visible and infrared light. Why does this telescope have such a big mirror (8 meters!)? __________________ ...
Nobel Prize in Physics 2002: Riccardo Giaconni
... Earth, as the atmosphere acts like an absorbing layer. It may sound strange since X-rays easily pass through our body (except the bones). Although the atmosphere is very tenuous compared to our body, the total thickness offered by it is much larger and X-rays suffer considerable absorption in it. Th ...
... Earth, as the atmosphere acts like an absorbing layer. It may sound strange since X-rays easily pass through our body (except the bones). Although the atmosphere is very tenuous compared to our body, the total thickness offered by it is much larger and X-rays suffer considerable absorption in it. Th ...
ASTRO2010 SCIENCE WHITE PAPER
... sensitivity is achieved when the resolution element matches the line width, but in the (background-limited) mid-IR region, higher-resolution observations can be binned to maximize the sensitivity. Secondly, because most lines are well resolved at these high resolutions (Fig. 2), the line profile can ...
... sensitivity is achieved when the resolution element matches the line width, but in the (background-limited) mid-IR region, higher-resolution observations can be binned to maximize the sensitivity. Secondly, because most lines are well resolved at these high resolutions (Fig. 2), the line profile can ...
here
... ○ Never point at the sun or other very bright light sources. Doing so can result in loss of eyesight or fire damage, etc. When observing the sun, be sure to use AstroSolar solar filters Rotate Retical focus ring also available from Kokusai Kohki to insure always safe observation. until reticle image ...
... ○ Never point at the sun or other very bright light sources. Doing so can result in loss of eyesight or fire damage, etc. When observing the sun, be sure to use AstroSolar solar filters Rotate Retical focus ring also available from Kokusai Kohki to insure always safe observation. until reticle image ...
ncam-program-2016 - Cline Observatory
... atmospheric defocusing to maintain image coherence. The lowest order, however, requires a moderately bright guide star in the FOV to negate tip-tilt image movement, which restricts sky coverage. We propose a partial solution to this restriction by noting the orthogonality of the orders-of-correction ...
... atmospheric defocusing to maintain image coherence. The lowest order, however, requires a moderately bright guide star in the FOV to negate tip-tilt image movement, which restricts sky coverage. We propose a partial solution to this restriction by noting the orthogonality of the orders-of-correction ...
orion® StarBlast 6 astro telescope
... Focusing the Telescope With the 25mm Sirius Plössl eyepiece (1) inserted into the focuser (4) and secured with the thumbscrews, aim the optical tube (3) so the front (open) end is pointing in the general direction of an object at least 1/4-mile away. With your fingers, slowly rotate one of the focus ...
... Focusing the Telescope With the 25mm Sirius Plössl eyepiece (1) inserted into the focuser (4) and secured with the thumbscrews, aim the optical tube (3) so the front (open) end is pointing in the general direction of an object at least 1/4-mile away. With your fingers, slowly rotate one of the focus ...
History of the telescope
The earliest known working telescopes appeared in 1608 and are credited to Hans Lippershey. Among many others who claimed to have made the discovery were Zacharias Janssen, a spectacle-maker in Middelburg, and Jacob Metius of Alkmaar. The design of these early refracting telescopes consisted of a convex objective lens and a concave eyepiece. Galileo used this design the following year. In 1611, Johannes Kepler described how a telescope could be made with a convex objective lens and a convex eyepiece lens and by 1655 astronomers such as Christiaan Huygens were building powerful but unwieldy Keplerian telescopes with compound eyepieces. Hans Lippershey is the earliest person documented to have applied for a patent for the device.Isaac Newton is credited with building the first ""practical"" reflector in 1668 with a design that incorporated a small flat diagonal mirror to reflect the light to an eyepiece mounted on the side of the telescope. Laurent Cassegrain in 1672 described the design of a reflector with a small convex secondary mirror to reflect light through a central hole in the main mirror.The achromatic lens, which greatly reduced color aberrations in objective lenses and allowed for shorter and more functional telescopes, first appeared in a 1733 telescope made by Chester Moore Hall, who did not publicize it. John Dollond learned of Hall's invention and began producing telescopes using it in commercial quantities, starting in 1758.Important developments in reflecting telescopes were John Hadley's production of larger paraboloidal mirrors in 1721; the process of silvering glass mirrors introduced by Léon Foucault in 1857; and the adoption of long lasting aluminized coatings on reflector mirrors in 1932. Almost all of the large optical research telescopes used today are reflectors.The era of radio telescopes (along with radio astronomy) was born with Karl Guthe Jansky's serendipitous discovery of an astronomical radio source in 1931. Many types of telescopes were developed in the 20th century for a wide range of wavelengths from radio to gamma-rays.