Star Atlas
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Description
The night sky is one of the beautiful sights in nature, yet many people remain lost among the plethora of heavenly bodies and are baffled by the progressively changing appearance of the sky, from day to day and season to season.
Now let STAR ATLAS guide you on a journey through the cosmos - a voyage of discovery through the constellations that surround us. Not only will you be able to explore patterns in the sky, but you'll also learn details of the stars that that you can see in the “Star Data” tables. Then relate your new-found knowledge to the real night sky, as many of the constellations are within the range of simple equipment such as binoculars, and all are within the range of an average-sized telescope.
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Instructions
Place the disk in the left-hand drive (drive 1) and press the function key F9. Use cursor keys right and left to step forwards/backwards by the page, up and down to get to the constellation required on the menu pages, and RETURN to select.
You are now viewing the star map, and can view data about the brightest stars in the current constellation by pressing RETURN to view the star data. Pressing RETURN again will return to the star map, and pressing SPACE will allow you to select a new constellation.
Key to the Star Data Table
Hemisphere - whether the current constellation is visible above, below or around the Equator. Northern hemisphere observer should face south, and southern hemisphere observers should face north.
Month – The month in which the current constellation can be seen centrally in the night sky at 2200 GMT, when viewed from the current hemisphere in the middle of the month.
Name - each star is given a letter of the Greek alphabet, the brightest first.
Brightness - the brighter the star, the lower the number - very bright stars have negative numbers.
Distance - distance of the star from our Sun, in light years. (1 light year = 9.46 million million kilometres.)
Colour - coded colour of the star, as in this table:
0 - Blue - 25000 to 40000 degrees C
B - Blue - 11000 to 25000 degrees C
A - Blue/White - 7500 to 11000 degrees C
F – White - 6000 to 7000 degrees C
G - Yellow - 5000 to 6000 degrees C
K - Orange - 3500 to 5000 degrees C
M – Red - 3000 to 3500 degrees C
X - the horizontal axis co-ordinate of the star.
Y - the vertical axis co-ordinate of the star.