Computerized Astrolabe (IMAGE) University of Sharjah Caption A computerized model of al-Khujandi's astrolabe, through which scientists can demonstrated how easily it could function as a kind of a rudimentary analogue computer with the ability to measure the altitude of heavenly bodies and locate the position of the sun and the brightest stars in relation to the meridian and the horizon. Credit Wilfred de Graaf, Utrecht University Usage Restrictions No restrictions License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.