fantastic pictures of the Universe

1. http://heritage.stsci.edu/commonpages/infoindex/ourproject/moreproject.html The Hubble Heritage Project The Hubble Space Telescope (HST) is a research tool dedicated to scientific studies of nature. Enroute to illuminating the forces shaping our cosmos, HST has accumulated a cosmic zoo. The Hubble Heritage Project sees this instrument also as a tool for extending human vision, one that is capable of building a bridge between the endeavors of scientists and the public. By emphasizing compelling HST images distilled from scientific data, we hope to pique curiosity about our astrophysical understanding of the universe we all inhabit. More…... Click

2. http://heritage.stsci.edu/commonpages/infoindex/ourimages/color_comp.html How Heritage Images are made from HST Data The Hubble Heritage Project team sees the Hubble Space Telescope, in addition to being a research instrument, as a tool for extending human vision. The detectors on this space observatory are much more sensitive than the human eye. For example, they capture radiation with energies in the electromagnetic (EM) spectrum beyond the human visual range, as well as light that is fainter than we can see. The challenge is to convert these remarkably extended data into visual images that convey the knowledge they've captured. The detectors measure how the radiation from the sky varies in lightness and darkness and so render only black and white images. However particular energies of radiation can be selected, before it reaches the detector, by inserting filters which pass only specific wavelengths of light; these filters work like colored glass. Sometimes a set of 3 filters are used which approximate the same wavelength range of the EM spectrum as covered by the human eye. Combining black and white images from these filters generate natural color images. The structures in this kind of image are similar to those we would see with our eyes if we could traveled to the object of study . More... Click

3. http://opostaff.stsci.edu/%7Elevay/process / Steps in producing color Hubble Space Telescope images While many pictures from the Hubble Space Telescope are familiar, less common is an understanding that the telescope does not work exactly like a snapshot camera or a video camera. (There are similarities, however, particularly with a digital still camera.) Do these pictures look like what we could see with our eyes? The (somewhat glib) answer is, yes and no. The pictures are usually quite different from what we would see, mostly because the telescope and its cameras work quite differently from our eyes. We cannot see very faint light, though we can distinguish a very wide range of brightnesses in the same scene. We cannot see very dim light in color. HST, by comparison, can detect very faint light, and some light (infrared and ultraviolet) that our eyes cannot see at all. More... Click

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111. Coliding Galaxies Montage

112. Daca aceasta calatorie vi s-a parut prea lunga sau chiar plictisitoare, ganditi-va la imensitatea Universului, despre care unii savanti spun ca ar fi infinit,, dar si la enorma munca depusa de atatia oameni pt ca noi sa ne putem bucura cateva minute ochii si sufletul cu minunile lumii in care noi, biete firisoare de praf, vietuim. Viorica Click to end