• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Observatory Visit

Extracts from this document...


Ben Parsons    Y-Block         Norman Lockyer Observatory Visit

Norman Lockyer Observatory Visit


The Norman Lockyer Observatory, based outside Sidmouth South Devon, is an historic working optical observatory and an educational centre for science, mainly concentrating in the fields of astronomy, meteorology, amateur radio and sciences of the coast and countryside. It is operated by The Norman Lockyer Observatory Society, a registered charity, and is staffed entirely by unpaid volunteers, many of whom are retired scientists. The Observatory was established in 1912 by Sir Joseph Norman Lockyer to continue his astronomical research when the South Kensington Observatory was closed.  Now it provides a facility at which the general public and eccentrics alike may participate in projects and pursue recreational study of science in a practical way. The Hill Observatory was intended to continue research into the Sun’s effect on the Earth’s climate, and the spectral classification of stars. By 1913 solar research had commenced using the Kensington 10-inch twin tube refractor which had been brought from South Kensington.

...read more.


Refracting Telescopes use a lens to gather light and bring the image to the eyepiece. These are the type of instruments that most people think of when they think of a telescope. They are fairly maintenance free and generally provide superb images of the moon, planets, star clusters and general sky gazing. They tend to be smaller in aperture than other types so they are not as good for viewing fainter sky objects such as galaxies and nebulae.image02.jpgimage03.jpg

The refractor telescope uses a lens to gather and focus light. The first telescopes built were refractors. Most small telescopes sold in gift shops are refractors.


  1. Refractor telescopes are rugged. After the initial alignment, their optical system is more resistant to misalignment than the reflector telescopes.
  2. The glass surface inside the tube is sealed from the atmosphere so it rarely needs cleaning.
  3. Since the
...read more.


2. How well the light passes through the lens varies with the wavelength of the light. Ultraviolet light does not pass through the lens at all.

3. How well the light passes through decreases as the thickness of the lens increases.

4. It is difficult to make a glass lens with no imperfections inside the lens and with a perfect curvature on both sides of the lens.

5. The objective lens can be supported only at the ends. The glass lens will sag under its own weight.

Other uses for refractive telescopes are for some types of binoculars and telescopic rifle sights are the most common uses than telescopes for star-gazing.





Staff at Norman Lockyer Observatory

Pictures: Kensington Telescope and its dome are my own.

Birds eye photo of Observatory from   http://www.projects.ex.ac.uk/nlo/welcome.htm

 Graph Image from http://www.astro.washington.edu/labs/clearinghouse/labs/Spectclass/images/blackbody.jpg

...read more.

This student written piece of work is one of many that can be found in our AS and A Level Microscopes & Lenses section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related AS and A Level Microscopes & Lenses essays

  1. Relationship Between U and V For a Convex Lens

    The equation of the graph produced which is a prediction of the actual results, when plotting u over v is: 1 + 14.9 (v - 14.9) Using the formula also proves that when u increases v decreases.

  2. Proving the lens formula.

    ............. ............. ............. ............. Risk Assessment All things considered, there are little risks presented with this experiment. I feel confident no special precautions need to be taken to ensure the safety of people partaking, or working near the experiment.

  1. Bradford Museum of Film and Photography

    to a piece of paper so I could view this image of the eclipse safely. In the museum I also saw an exhibit called Painting with Light. In this exhibit we had a pen which had lots of optical fibres inside, we then put this onto a screen and made

  2. Use of the material Zerodur in the KECK observatory telescope. The very low CTE ...

    This picture shows a segment of the mirror before it is coated in the reflective aluminium. This photo gives an idea of the scale of the pieces of the mirror.9 Several properties of ZERODUR(r) make it perfect for use in telescopes; - Very low coefficient of thermal expansion (CTE)

  1. Refracting telescope.

    Note that this always means that light coming from a medium with lower index of refraction will always `bend toward the normal' in the medium with higher . In other words, the angle of refraction is smaller than the angle of incidence.

  2. The eye.

    These changes enable the eye to adjust its focus between far objects and near objects. The iris and lens divide the eye into two main chambers: * the front chamber is filled with a watery liquid, the aqueous humour. * the rear chamber is filled with a jellylike material, the vitreous body.

  1. Given a Tube Containing a Lens, Calculate The Focal Length of The Lens and ...

    = fm + [f - c] c = fm + [f - a] When this is put into a graph where the y-axis is c and the x-axis is m, using the standard formula for the equation of a graph, y = mx + c where m = gradient and

  2. My experiments focus is to obtain an accurate measurement for a specific lenss power.

    It is a positive correlation where as 1/u curvature becomes less negative, 1/v becomes more positive. Additionally as 1/V increases, the uncertainty in its measurement generally increases. First Graph: In order to intercept both axes in the same graph, I had to make the y axis the same scale as the x axis.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work