## Mr Fry's Astronomy Resources

I was contacted recently with the sad news that Mr Derek Fry, Teacher of Physics and Astronomy at The Grammar School at Leeds, had passed away. They asked that I share the Astronomy materials he wrote and used with his students and publish them on the website. They are taken from here. Mr Fry was a fellow of both the Royal Astronomical Society and the Institute of Physics and his materials are excellent. You can find his obituary here.

#### Practice Papers

#### Work Papers

A total eclipse of the Sun, by the Moon, seen from the Earth

Absolute Magnitude, Apparent Magnitude and Distance

Absolute Magnitude, Apparent Magnitude and Distance Answers

Angles

Another Look at the Synodic Period

Apparent Magnitudes

Astronomical Parallax

Atmospheric Refraction of Light

Beyond the range of the Cepheid

Binary Systems

Black Hole

Calculating the distance of a geostationary/geosynchronous Satellite from the centre of the Earth

Calculating the length of the Shadow cast by the Earth in space

Cartesian (Cassegrainian) reflecting telescope

Centripetal acceleration, Kepler's Third Law of Planetary Motion

Chromatic aberration (or Chromatism)

Circumpolar Stars

Circumpolarity

Cosmic Microwave background

Cosmology

Defects of lenses (more of a reminder)

Definition of the Parsec (PC)

Deriving and expression for the centripetal acceleration of secondary body revolving around a primary body.

Direction of Light from the Pole Star (Polaris) overhead for an observer at the (geographical) North Pole

Displaying Your Calculation for the Eccentricity of an Ellipse

Doppler, Christian Johann (1803 1853)

Ellipse Parameters

Experiment to examine the properties of a simple, refracting astromical telescope

Experiment to Investigate Quantitatively how the Angular height of the Sun above the Horizon varies throughout the Year

Experiment to measure the angle subtended by the Sun at the Earth

Further work on stellar evolution

Fusion in the Sun

Galaxies

Illustrating Johannes Kepler's "Equal Areas" Law

In connexion with our calculation of the luminosity of the Sun

Interstellar (between the stars) absorption of light.

Johannes Kepler's Laws

Johannes Kepler's Second Law of Planetary Motion in detail

Latitude and Polaris

Leo

Mars

Measuring the distance to the Crab Nebula

Newton, Sir Isaac (1642 1727)

Nuclear reactions in main sequence stars

Orbital and Rotational kinetic energies; rotations and orbital angular momenta

Orders of Magnitudes of Times

Absolute Magnitude, Apparent Magnitude and Distance

Absolute Magnitude, Apparent Magnitude and Distance Answers

Angles

Another Look at the Synodic Period

Apparent Magnitudes

Astronomical Parallax

Atmospheric Refraction of Light

Beyond the range of the Cepheid

Binary Systems

Black Hole

Calculating the distance of a geostationary/geosynchronous Satellite from the centre of the Earth

Calculating the length of the Shadow cast by the Earth in space

Cartesian (Cassegrainian) reflecting telescope

Centripetal acceleration, Kepler's Third Law of Planetary Motion

Chromatic aberration (or Chromatism)

Circumpolar Stars

Circumpolarity

Cosmic Microwave background

Cosmology

Defects of lenses (more of a reminder)

Definition of the Parsec (PC)

Deriving and expression for the centripetal acceleration of secondary body revolving around a primary body.

Direction of Light from the Pole Star (Polaris) overhead for an observer at the (geographical) North Pole

Displaying Your Calculation for the Eccentricity of an Ellipse

Doppler, Christian Johann (1803 1853)

Ellipse Parameters

Experiment to examine the properties of a simple, refracting astromical telescope

Experiment to Investigate Quantitatively how the Angular height of the Sun above the Horizon varies throughout the Year

Experiment to measure the angle subtended by the Sun at the Earth

Further work on stellar evolution

Fusion in the Sun

Galaxies

Illustrating Johannes Kepler's "Equal Areas" Law

In connexion with our calculation of the luminosity of the Sun

Interstellar (between the stars) absorption of light.

Johannes Kepler's Laws

Johannes Kepler's Second Law of Planetary Motion in detail

Latitude and Polaris

Leo

Mars

Measuring the distance to the Crab Nebula

Newton, Sir Isaac (1642 1727)

Nuclear reactions in main sequence stars

Orbital and Rotational kinetic energies; rotations and orbital angular momenta

Orders of Magnitudes of Times

Our Galaxy

Parameters of the Ellipse

Potentially Hazardous Objects / Near Earth Objects

Principal construction rays for the different images formed by a convex lens

Reflexion from an Elliptical Surface

Relating Absolute, M, and Apparent, M, Magnitude

Satellite Motion

Some Important Winter Constellations

Some Orbital Parameters of the Planets

Some Useful Astronomical Facts and Figures

Spherical Aberration

Stellar and Terrestrial Co ordinates

Stellar Evolution

Supplement to Hubble and the redshifts of galaxies

Terrestrial Tides

The "Cepheid Variable" method of Distance Determination

The "Magnifying" glass

The "reduced" (meaning simplified) human eye, and the image formed of the moon

The angle subtended by Mercury at the Earth, when the Planet transits the Solar Disc

The Angular Elevation of Polaris (the Pole Star) and the Latitude of the Observer

The Angular Measurements of Some Objects

The Astronomical Refracting Telescope

The Astronomical Telescope

The Basic Ellipse

The Celestial Sphere for an Observer at 51⁰ N

The Coriolis (Gaspard Gustave de Coriolis) 1792 1843

The Equation of Time

The Geocentric Parallax of the Moon

The Heliocentric (centered on the Sun) Parallax of a Star

The Lifetime of the Sun

The Magnitude System

The Observations of Eratosthenes and the Interpretation of his Measurements

The Orbit of the Planet Mercury

The precessional Motion of the Earth

The Principal Spring Constellations

The Prominence of Mars

The Relative Sensitivity of the Eye

The Saros Cycle

The Sun

The Terrestrial Seasons

The Total Lunar Eclipse 28th September 2015

The Unit of Distance the Parsec (PC)

Tides on the Earth

Transits of Venus

Understanding Stars

Using String to measure the circumference of a plate masquerading as the Earth.

Why does the Earth Wobble?

Parameters of the Ellipse

Potentially Hazardous Objects / Near Earth Objects

Principal construction rays for the different images formed by a convex lens

Reflexion from an Elliptical Surface

Relating Absolute, M, and Apparent, M, Magnitude

Satellite Motion

Some Important Winter Constellations

Some Orbital Parameters of the Planets

Some Useful Astronomical Facts and Figures

Spherical Aberration

Stellar and Terrestrial Co ordinates

Stellar Evolution

Supplement to Hubble and the redshifts of galaxies

Terrestrial Tides

The "Cepheid Variable" method of Distance Determination

The "Magnifying" glass

The "reduced" (meaning simplified) human eye, and the image formed of the moon

The angle subtended by Mercury at the Earth, when the Planet transits the Solar Disc

The Angular Elevation of Polaris (the Pole Star) and the Latitude of the Observer

The Angular Measurements of Some Objects

The Astronomical Refracting Telescope

The Astronomical Telescope

The Basic Ellipse

The Celestial Sphere for an Observer at 51⁰ N

The Coriolis (Gaspard Gustave de Coriolis) 1792 1843

The Equation of Time

The Geocentric Parallax of the Moon

The Heliocentric (centered on the Sun) Parallax of a Star

The Lifetime of the Sun

The Magnitude System

The Observations of Eratosthenes and the Interpretation of his Measurements

The Orbit of the Planet Mercury

The precessional Motion of the Earth

The Principal Spring Constellations

The Prominence of Mars

The Relative Sensitivity of the Eye

The Saros Cycle

The Sun

The Terrestrial Seasons

The Total Lunar Eclipse 28th September 2015

The Unit of Distance the Parsec (PC)

Tides on the Earth

Transits of Venus

Understanding Stars

Using String to measure the circumference of a plate masquerading as the Earth.

Why does the Earth Wobble?