• 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

    This is because when the rays of light cross over, they cross over on the other side of the principal axis, therefore producing an inverted image. A trend and pattern that I noticed in the graph was that as u increased, the difference in v results also decreased.

  2. Proving the lens formula.

    marker, then measure the Image distance, using the front of the screen as the marker. Use the 30cm rule so that the mm can be measured as accurately as possible. * The lens can move around 5 mm and still produce a clear and focussed image on the screen.

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

    Accuracy: Looking at the mean gradient line, the majority of plots are intercepted suggesting the results are accurate. However the U=300 and U=450 results do not come into contact with the line, and several others intercepted at the minimum/maximum limits.

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

    This is a material called ZERODUR(r), a glass-ceramic manufactured by the German company Schott. This makes up the base of each mirror segment, and is coated in a very thin layer of highly polished aluminium to give the mirror segment its reflective properties.

  2. Investigation of the chromatic aberration of a converging lens.

    The object grill was placed in front of the light bulb in order to give a clear image. 4.The lens and screen were positioned against the metre rule in a straight line with the object grill so that all their positions can be measured.

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

    Because of this, I will measure the smallest and largest values of 'c' for which the image is in focus and take a mean average. At the mean point, the value of magnification will be measured. During the experiment, all other aspects including placement of light source, lens, ruler should be kept constant.

  2. Norman Lockyer observatory trip

    Reflectors have large light gathering capacities, and can produce bright images of faint, deep-sky objects for visual observing as well as astrophotography. One disadvantage of reflectors is that you occasionally have to clean and align the mirrors. Also, slight errors in grinding the mirrors can distort the image.

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