Welcome to http://www.handsonuniverse.org/activities/Explorations/Uranus

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  Uranus & Its Moons:
Titania, Umbriel, and Ariel 

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The brightest object in this image is the planet, Uranus. The three star-like objects very near Uranus are three of its moons. From left to right, they are Titania, Umbriel and Ariel.

With HOU IP, open up the uranus_apo.fts image. Flip the image vertically so it matches this picture. Click on Log. Write down the (x,y) coordinates for Uranus and each of the moons.

This image was taken by Dave Cole of the University of Chicago using the Apache Point Observatory telescope in New Mexico. Dave operated the telescope by remote control using the Internet from Adler Planetarium in Chicago on the evening of December 19th, 1997 (Dec. 20, 1997, 01:28 UT)

Photo Gallery of Uranus and its moons

Fact Sheet for Uranus.

Fact Sheet for Moons of Uranus.

Calculate the distance between Uranus and Titania.

Uranus and Four Moons
September 18, 2000

These images were at Yerkes Observatory with the 24 inch telescope.  They were taken 82 minutes apart.  You can see Uranus, four of its moons and stars in the background sky. 

The moons in order of distance from Uranus are:  Ariel, Titania, Umbriel, and Oberon.  In order of brightness the moons are:  Titania, Ariel, Oberon, and Umbriel.   

In order to determine which were moons and which were stars the images were aligned on a star.  So, when the images are added or subtracted you will see the planet and its moons change position.   You can add or subtract images by using the HOU-IP software, Manipulation, add (or subtract), select a file, and click on display in a new window, OK.  Here is the result

Use Data Tools, Slice to measure distances on the images.  Use Data Tools, Aperture, choosing 4 and 8 for the settings, to compare brightness counts of the moons. 

HOU Educators:  Download .fts images of Uranus.

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