VARIOUS MEASUREMENTS OF TIME
... Since the earth rotates on its axis from west to east, all heavenly bodies (i.e. the sun and the fixed stars) appear to revolve from east to west (i.e. in clock-wise direction) around the earth. Such motion of the heavenly bodies is known as apparent motion. We may consider the earth to turn on it a ...
... Since the earth rotates on its axis from west to east, all heavenly bodies (i.e. the sun and the fixed stars) appear to revolve from east to west (i.e. in clock-wise direction) around the earth. Such motion of the heavenly bodies is known as apparent motion. We may consider the earth to turn on it a ...
29_Astronomical Navigation
... declination from the Nautical Almanac, the azimuth, or bearing, is obtained. By drawing this bearing on the chart from his assumed (DR) position and measuring off the intercept, a line drawn through that point at right angles to the azimuth provides a position line. A similar sight taken at the same ...
... declination from the Nautical Almanac, the azimuth, or bearing, is obtained. By drawing this bearing on the chart from his assumed (DR) position and measuring off the intercept, a line drawn through that point at right angles to the azimuth provides a position line. A similar sight taken at the same ...
7. When should I observe my target? How long can
... Sept 21 for RA = 0h Dec 21 for RA = 6h Mar 21 for RA = 12h Jun 21 for RA = 18h ...
... Sept 21 for RA = 0h Dec 21 for RA = 6h Mar 21 for RA = 12h Jun 21 for RA = 18h ...
The Celestial Sphere
... First Point of Aries (Υ) The point on the celestial sphere where the ecliptic cuts the equinoctial when the sun just passes the equinoctial from south to north, also known as the vernal equinox position of the sun, which occurs on 21st of March. First Point of Libra The point on the celestial sph ...
... First Point of Aries (Υ) The point on the celestial sphere where the ecliptic cuts the equinoctial when the sun just passes the equinoctial from south to north, also known as the vernal equinox position of the sun, which occurs on 21st of March. First Point of Libra The point on the celestial sph ...
celestial sphere
... star chart mounted in such a fashion that it can be oriented to represent the true aspect of the sky as seen by an observer at any point on the earth at any time. Since the surface is spherical, the distortion inherent in flat star maps is avoided. On the other hand, it forces you to view the conste ...
... star chart mounted in such a fashion that it can be oriented to represent the true aspect of the sky as seen by an observer at any point on the earth at any time. Since the surface is spherical, the distortion inherent in flat star maps is avoided. On the other hand, it forces you to view the conste ...
Sidereal Time and Celestial Coordinates
... Rules • For an observer at latitude x north – Circumpolar: stars of dec > 90-x – Never seen: stars of dec < -(90 –x) – All of the stars with inbetween declinations are sometimes above our horizon and sometimes below it ...
... Rules • For an observer at latitude x north – Circumpolar: stars of dec > 90-x – Never seen: stars of dec < -(90 –x) – All of the stars with inbetween declinations are sometimes above our horizon and sometimes below it ...
TWO DIFFERENT ALTITUDES
... 7. The altitude of __________ is the same as the observer's ___________. 8. In the Los Angeles area, the altitude of Polaris is _________. 9. The horizontal line that surrounds the observer is the _____________. 10. The sky seems to meet the earth or ocean at the ____________. 11. An object with an ...
... 7. The altitude of __________ is the same as the observer's ___________. 8. In the Los Angeles area, the altitude of Polaris is _________. 9. The horizontal line that surrounds the observer is the _____________. 10. The sky seems to meet the earth or ocean at the ____________. 11. An object with an ...
Field of View of a Small Telescope Observational
... properly. Their axes of motion then correspond to coordinates on the celestial sphere. Remember, right ascension (RA) is celestial longitude, and declination (Dec) is celestial latitude. Since the Earth turns, the right ascension directly overhead (at zenith) is constantly changing. An equatorial mo ...
... properly. Their axes of motion then correspond to coordinates on the celestial sphere. Remember, right ascension (RA) is celestial longitude, and declination (Dec) is celestial latitude. Since the Earth turns, the right ascension directly overhead (at zenith) is constantly changing. An equatorial mo ...
Word Document - University of Iowa Astrophysics
... This lab exercise does not require a formal writeup. Data taking, drawings, and calculations are to be entered on this form and handed to the teaching assistant. However, you need to preserve your results for later in the semester when you will measure angular sizes of other objects, then use known ...
... This lab exercise does not require a formal writeup. Data taking, drawings, and calculations are to be entered on this form and handed to the teaching assistant. However, you need to preserve your results for later in the semester when you will measure angular sizes of other objects, then use known ...
Fundamentals of Surveying
... composed of 100 links, with a link being 0.66 feet or 7.92 inches long. Each link is a steel rod bent into a tight loop on each end and connected to the next link with a small steel ring. Starting in the early 1900’s surveyors started using steel tapes to measure distances. These devices are still c ...
... composed of 100 links, with a link being 0.66 feet or 7.92 inches long. Each link is a steel rod bent into a tight loop on each end and connected to the next link with a small steel ring. Starting in the early 1900’s surveyors started using steel tapes to measure distances. These devices are still c ...
Homework 1 SOLUTIONS - University of Colorado Boulder
... Latitude only; to measure longitude you need a clock, specifically a clock set to Greenwich England time (called variously: “Greenwich mean Time or Universal time or Zulu time”); Greenwich is located at the arbitrary zero point of longitude. c). What if you were a Polynesian "wayfinder" (navigator) ...
... Latitude only; to measure longitude you need a clock, specifically a clock set to Greenwich England time (called variously: “Greenwich mean Time or Universal time or Zulu time”); Greenwich is located at the arbitrary zero point of longitude. c). What if you were a Polynesian "wayfinder" (navigator) ...
Astronomy 102, Spring 2003 Solutions to Review Problems
... 2 , where F is the flux you measure— but you then also need d, the distance, in order to calculate L. For mass, if it’s a binary star, you can measure the period of the orbit without knowing the distance, but again to get the physical semi-major axis of the orbit from the angular separation of the t ...
... 2 , where F is the flux you measure— but you then also need d, the distance, in order to calculate L. For mass, if it’s a binary star, you can measure the period of the orbit without knowing the distance, but again to get the physical semi-major axis of the orbit from the angular separation of the t ...
Coordinate Systems for Astronomy or: How to get
... have measured, and continue to measure, the positions of hundreds of quasars across the sky. This is called the International Celestial Reference Frame (ICRF), shown in Figure 16. The HartRAO 26m telescope has played a key role in this project, being one of the few southern radio telescopes equipped ...
... have measured, and continue to measure, the positions of hundreds of quasars across the sky. This is called the International Celestial Reference Frame (ICRF), shown in Figure 16. The HartRAO 26m telescope has played a key role in this project, being one of the few southern radio telescopes equipped ...
Function 1 Competence 2 - Official Website of MARINA STCW
... for seafarers The Annual Publication of Database of Questionnaires is mandated in Republic Act 10635 or the Act Establishing the Maritime Industry Authority (MARINA) as the Single Maritime Administration Responsible for the Implementation and Enforcement of the 1978 International Convention on Stand ...
... for seafarers The Annual Publication of Database of Questionnaires is mandated in Republic Act 10635 or the Act Establishing the Maritime Industry Authority (MARINA) as the Single Maritime Administration Responsible for the Implementation and Enforcement of the 1978 International Convention on Stand ...
telescopes - NPZ Optics
... supply in the “l” position. The LED light on the power supply should turn on. For MT-1C mount place the left switch in “*” position. Turn on the mount clock drive by placing the second switch in “l” position. The LED light on the power supply should turn on. Connect hand controller to the moun ...
... supply in the “l” position. The LED light on the power supply should turn on. For MT-1C mount place the left switch in “*” position. Turn on the mount clock drive by placing the second switch in “l” position. The LED light on the power supply should turn on. Connect hand controller to the moun ...
Coordinate Systems
... not having a leap year, unless that year is divisible by 400 (1600 and 2000 were leap years). ...
... not having a leap year, unless that year is divisible by 400 (1600 and 2000 were leap years). ...
4. Survey Observations
... • On the Earth 0o of longitude is chosen to be the Greenwich Meridian • In the sky 0o of longitude is chosen to be the Vernal Equinox, the first day of spring • In this equatorial coordinate system used in astronomy longitude is right ascension and latitude is declination ...
... • On the Earth 0o of longitude is chosen to be the Greenwich Meridian • In the sky 0o of longitude is chosen to be the Vernal Equinox, the first day of spring • In this equatorial coordinate system used in astronomy longitude is right ascension and latitude is declination ...
THE CELESTIAL SPHERE
... between them is of no consequence to day-to-day observations. We therefore imagine the stars to remain fixed on a sphere of very large radius with the earth at its centre. We call this sphere the celestial sphere. At any point of time we can only see the upper half of the celestial sphere. The point ...
... between them is of no consequence to day-to-day observations. We therefore imagine the stars to remain fixed on a sphere of very large radius with the earth at its centre. We call this sphere the celestial sphere. At any point of time we can only see the upper half of the celestial sphere. The point ...
Stars in the night Sky - ScienceEducationatNewPaltz
... o Use a protractor outdoors to estimate the altitude of Polaris, or to measure degrees of azimuth along the horizon from due north. o Horizon coordinates vary with locality, but are still useful in sky watching and are used with many telescope mounts. Any star or planet that can be located on the me ...
... o Use a protractor outdoors to estimate the altitude of Polaris, or to measure degrees of azimuth along the horizon from due north. o Horizon coordinates vary with locality, but are still useful in sky watching and are used with many telescope mounts. Any star or planet that can be located on the me ...
Lab Writeup
... The most basic astronomical instrument is the telescope. A telescope collects light from and magnifies an astronomical object. Until the end of the 19th century, all observational work in astronomy was based on observations made at the eyepiece of a telescope. Nowadays, even though astronomical rese ...
... The most basic astronomical instrument is the telescope. A telescope collects light from and magnifies an astronomical object. Until the end of the 19th century, all observational work in astronomy was based on observations made at the eyepiece of a telescope. Nowadays, even though astronomical rese ...
Lecture notes on Coordinte systems
... angles subtended by these objects on the Earth. • Coordinates on a sphere – A sphere that is rotating rotates about some axis that passes through the center of the sphere. This is the rotation axis and defines two points the north and south pole where the rotation axis cuts the surface of the sphere ...
... angles subtended by these objects on the Earth. • Coordinates on a sphere – A sphere that is rotating rotates about some axis that passes through the center of the sphere. This is the rotation axis and defines two points the north and south pole where the rotation axis cuts the surface of the sphere ...
A Dart Board for the Bored An eye opening offer from the editors of
... junior award that the region presented to us. However, they saw fit to override that technicality provided corrections were made as soon as possible. ...
... junior award that the region presented to us. However, they saw fit to override that technicality provided corrections were made as soon as possible. ...
ASTR 511 (O’Connell) FALL 2003 DUE FRIDAY SEPTEMBER 19
... E-1 Using either telescope, observe Mars and any 4 of the other targets listed below (i.e. five targets total). Write a brief, but careful, description of each and make a drawing of the field. Review the suggestions for making good drawings in the ASTR 130 Manual. Use the standard forms. Mark the N ...
... E-1 Using either telescope, observe Mars and any 4 of the other targets listed below (i.e. five targets total). Write a brief, but careful, description of each and make a drawing of the field. Review the suggestions for making good drawings in the ASTR 130 Manual. Use the standard forms. Mark the N ...
Document
... naval operations to explore the heavens. The device he used, of course, was the telescope, an instrument used to gather and focus light. Our atmosphere prevents most of the electromagnetic radiation from reaching the ground, allowing just the visible band, parts of the radio band, and small fraction ...
... naval operations to explore the heavens. The device he used, of course, was the telescope, an instrument used to gather and focus light. Our atmosphere prevents most of the electromagnetic radiation from reaching the ground, allowing just the visible band, parts of the radio band, and small fraction ...
Local Horizon View
... This diagram shows that the altitude of Polaris above the horizon is the same as the observer's latitude. Note that the lines drawn to Polaris are parallel because Polaris is very far away. The direction to Polaris from the center of Earth is nearly the same as from the observer's position. ...
... This diagram shows that the altitude of Polaris above the horizon is the same as the observer's latitude. Note that the lines drawn to Polaris are parallel because Polaris is very far away. The direction to Polaris from the center of Earth is nearly the same as from the observer's position. ...
Meridian circle
The meridian circle is an instrument for timing of the passage of stars across the local meridian, an event known as a transit, while at the same time measuring their angular distance from the nadir. These are special purpose telescopes mounted so as to allow pointing only in the meridian, the great circle through the north point of the horizon, the zenith, the south point of the horizon, and the nadir. Meridian telescopes rely on the rotation of the Earth to bring objects into their field of view and are mounted on a fixed, horizontal, east-west axis.The similar transit instrument, transit circle or transit telescope is likewise mounted on a horizontal axis, but the axis need not be fixed in the east-west direction. For instance, a surveyor's theodolite can function as a transit instrument if its telescope is capable of a full revolution about the horizontal axis. Meridian circles are often called by these names, although they are less specific.For many years, transit timings were the most accurate method of measuring the positions of heavenly bodies, and meridian instruments were relied upon to perform this painstaking work. Before spectroscopy, photography, and the perfection of reflecting telescopes, the measuring of positions (and the deriving of orbits and astronomical constants) was the major work of observatories.