As the name suggests, it works by “actively” adjusting the telescope mirrors.Īdaptive optics – technology used to improve performance of optical systems through the reduction of rapidly changing optical distortion. The construction enables telescopes to move 8 meter primary mirrors. It is a class of galaxies that emit a large amount of energy from their center more than ordinary galaxies.Īctive optics – Technology developed in the 80’s for reflecting telescopes. Achromatic lenses are used to take chromatic aberrations away from images.Īctive galactic nucleiis a region in the center of a galaxy that has a higher than normal brightness. These bring two wavelengths into focus (normally red & blue) on the same plane. There are two places astronomers find accretion disks, binary star systems and galactic nuclei.Īchromatic lens is a combination of lenses made of different glass. It is the theoretical temperature entropy reaches its minimum value.Ībsorption lines are a dark feature in the spectrum of a star formed by cooler gases in a star’s outer layer.Īccretion disks arise when material, usually gases, are transferred from one celestial object to another. The following are terms from A-Z related to space & astronomy:Ībsolute magnitude – also known as absolute visual magnitude, relates to measuring a heavenly object’s brightness when viewed from 10 parsec or 32+ light years.Ībsolute zero – The international community agreed to define absolute zero as equivalent to −273.15☌ on the Celsius scale or−459.67☏ on the Fahrenheit scale. If you ever wonder the meaning of an astronomical word, search no further and browse below to find the definition of the space term.
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