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For the Love of It

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Edward’s Story

July 17, 2015 by Robyn Haggard
Selenographia Moon Globe, by John Russell, London, 1797 (Inv. 52085)

Selenographia Moon Globe, by John Russell, London, 1797 (Inv. 52085). Have you seen this model of the moon in the Museum?

Name: Edward

Age: 7

Occupation: Pupil

From: Aldridge

Object: Moon

Story: I really liked the gaps and the fact it that it looks like it is made from cheese but instead it is made from rock.

Posted in: Your Stories Tagged: moon, space

Callum’s Story

May 31, 2015 by Robyn Haggard
Hand-Held Refracting Telescope, English, 18th Century (Inv. 52178)

Hand-Held Refracting Telescope, English, 18th Century (Inv. 52178) This telescope is over 200 years old, do you think it would survive being dropped like the one Callum has?

Name: Callum

Age: 9

Occupation: School

From: Wolverhampton

Object: Telescope

Story: I was looking through my telescope when Venus came out. I was busy watching it and accidentally knocked my telescope over, it landed on my head and it was quite painful.

Posted in: Your Stories Tagged: planets, space, telescope

Jack’s Story

April 21, 2015 by Robyn Haggard

Name: Jack

Dates: 1927 – 1990

Occupation: Engineer

Object: A home-built Telescope

Story: In 1963 Jack made a Newtonian reflecting telescope, with a primary mirror 32 cm in diameter and having a focal length of 203 cm. Despite its poor location in the suburbs of London, some very useful observations were made with it. Two examples are given here.

Pencil drawing of Jupiter by Jack

Pencil drawing of Jupiter by Jack.

A. Jupiter

Above is a pencil drawing of Jupiter made by Jack on 20 March 1966. The planet is a gas giant that rotates on its axis in just less than ten hours. This causes it to be flattened at the poles and means that drawings have to be made quickly. The Great Red Spot seen in the image is a vast storm that was first identified in 1665 – it is comparable in size with the Earth! The black dot, that just happens to be seen here inside the Red Spot, is the shadow of one of Jupiter’s moons, Europa, which was discovered by Galileo. Along with every drawing, Jack made detailed notes about the position of each atmospheric feature seen on the planet’s disc.

B. Apollo 12 en route to the Moon

This unique observation requires a little explanation describing the sequence of events. The final stage of the Saturn-V rocket fired the Apollo 12 spacecraft out of its Earth orbit and on its way towards the Moon. Up to this point the Lunar Module, which was to touch-down on the Moon, was still stowed behind the Apollo spacecraft, protected by four panels. Apollo thus had to manoeuvre to pick up the Lunar Module and finally separate from the rocket. During the course of this, the four protective panels were jettisoned, and afterwards the remainder of the Saturn-V rocket, whose task was now complete, was sent into orbit around the sun. These two artistic concepts below (from NASA) illustrate these events:

Apollo images

The observation, made by Jack (on 14 November 1969, between 21:25 and 22:26 Universal Time), took place less than an hour after these happenings, and is reconstructed in the sketch below, which is based on his extensive notes.

Sketch of Jack's observations of Apollo 12 on route to the moon, reconstructed from his notes.

Sketch of Jack’s observations of Apollo 12 on route to the moon, reconstructed from his notes.

O2 is a cloud of liquid oxygen, released in the course of the manoeuvre. R is the Saturn-V rocket final-stage, which had finished its task. M is the Apollo spacecraft, now including the Lunar Module: it was amazing to think that it contained three astronauts already en route to the Moon. R and M were just points of light, and all of the items in the sketch moved together rapidly in relation to the fixed stars.

A, B and C were lights that flashed irregularly about once every 5 to 10 seconds. At first Jack was puzzled about this, but he then realised that these were three out of the four covers that had protected the Lunar Module.

Jack also build a model observatory, complete with a motorised framework, which you can read about here.

Special thanks to Peter at the Museum of the History of Science for providing this amazing story and the images which accompany it.

Posted in: Historic Stories, Your Stories Tagged: Apollo 12, astronomy, moon, planets, space, telescope

Peter’s Story

April 3, 2015 by Robyn Haggard
This is that planisphere Peter uses, it looks very different to the Museum's one below! The big dipper can be seen to the right of the pole star.

This is the planisphere Peter uses, it looks very different to the Museum’s one at the bottom of the post! The big dipper can be seen to the right of the pole star.

Name: Peter

Age: Ancient

From: Oxford

Object: Planisphere

Story: My modern planisphere is shown in the photo above. The brass rivet at its centre marks the position of the pole star. Because the Earth rotates daily, all stars seem to revolve about the pole star. By setting the date and time a planisphere shows which stars are visible in the night sky.

I like it because it can also be used in reverse, like a nocturnal, to tell the time at night:

  • Face north (in the direction of the pole star).
  • Hold the planisphere vertically in front of you with the oval sky-opening towards the top.
  • Keeping the front disk of the planisphere fixed, rotate the star disk until the orientation of the big dipper (plough) on the star disk matches that of the big dipper in the sky.
  • The time can now be read out against today’s date at the edge of the planisphere. [During the British Summer Time you will have to add an hour.]

    Celestial Planisphere, London, Early 19th Century (Inv. 40743). This planisphere is about 200 years old!

    Celestial Planisphere, London, Early 19th Century (Inv. 40743). This planisphere from the Museum’s collections is about 200 years old!

Posted in: Your Stories Tagged: astronomy, planisphere, space, stars, time

Trevor’s Story

March 5, 2015 by Robyn Haggard
Magnetic Compass, mid 19th Century (Inv. 69863)

Magnetic Compass, mid 19th Century (Inv. 69863)

Name: Trevor

Object: Compass

Story: With a simple compass and a yardstick, I constructed a scientific device to align a satellite dish on my roof with a satellite in the sky miles, and miles, and miles away. I managed to receive a signal on my first try! I boasted to my friends, who in turn bought satellites and then asked me to bring that scientific device I created over to their places. Moral of the story: When you make science work for you, friends will make you work for them (for free).
(I might have ‘lost’ that scientific device soon afterwards, much to the disappointment of some other friends)

Posted in: Your Stories Tagged: compass, satellite, space, yardstick

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