Next: Extraction of Information Up: Image Manipulations Previous: Transformations . ... Basically, it is not possible to retrieve information on features with frequencies higher than the Nyquist frequency (see Equation ). Several different techniques are used depending on the data (see Wells 1980 for a general discussion of the methods). ... Another group of image restoration algorithms use iterative methods to obtain a solution which is consistent with the data. ...

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... 145, 1998 R. Albrecht, R. N. Hook and H. A. Bushouse, eds. Recognition of Anomalous Events S. Monai 1 2 1 ,2 and F.Pasian2 Osservatorio Astronomico di Brera Merate, Italy Osservatorio Astronomico di Trieste, Italy Abstract. ... Raw images, as read from a CCD, are often affected by some events which are revealed by anomalous pixel values, i.e., single saturated pixels or pixels at zero intensity (also named hot or bad pixels). ... Recognition of Anomalous Events 77 Figure 1. ...

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... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2010 June 15 . Starry Night Scavenger Hunt . ... OK, then find, the rings of Supernova 1987A , the Eskimo Nebula , the Crab Nebula , Thor's Helmet , the Cartwheel Galaxy , and the Ant Nebula . ... Then please identify any more hidden images not mentioned here -- and there are several -- on APOD's main discussion board: Starship Asterisk . ...

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... Star Atlas . ... Behemoth black hole found in an unlikely place . ... black holes . ... If a supernovaт??s original star is massive enough to form a black hole, why is there any explosion? Why doesnт??t the entire mass of the original star simply fall onto the newly formed black hole and instantly vanish? ... For some massive stars, it may be possible that collapse leads directly to the formation of a black hole with no explosion. ... Get instant access to subscriber content on Astronomy.com! ...

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... Modelling is the only feasible way of assessing the reliability of the reconstructions. Modelling here refers to the model used to generate a simulated data set, not the implicit modelling performed by the deconvolution algorithms.) ... Model-fit for parameters to the original data if possible. Check that simulated observations can recover the significant features of the model reliably. ... Use simulated observations to determine the effective resolution of the deconvolution sky model. ...

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Astronomy Picture of the Day . Mysterious Features on Ganymede . ... 9.12.1997 . ... Credit: The Galileo Project , NASA Explanation: Where is the rest of the circle? Jupiter 's largest moon Ganymede has some truly unusual terrain, including the pictured half circle above cut by nearly parallel curves. ... Also of interest is a dense linear crater chain that cuts across the top of the half-circle. ... 1997 1998 . ... Publications with keywords: Ganymede . Publications with words: Ganymede . ...

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This document describes changes from the original TCC to version 1.0 of the current TCC. ... The new TCC uses one socket per device (e.g. axis controller or mirror); the old TCC allowed multiple axes to be controlled by one LAT stream. ... The new TCC also communicates with hardware controllers via TCP/IP instead of LAT; this has the potential to reduce the use of terminal servers at APO. ... Set and Show ExpTime . ... Show Database (the new TCC does not use a central repository to store data) . ...

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... The Raw Images . Table 1: List of Viking Orbiter Images of the "Face on Mars" . ... Processing the Face Images . ... In July, 1976, Viking Orbiter 1 was acquiring images of the Cydonia region of Mars as part of the search for potential landing sites for Viking Lander 2. ... Using the height field, it is also possible to view the "Face" from different look directions, by mapping the Viking Orbiter image directly on the the topography and then placing the "viewer" at different locations. ... Mars . ...

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Nova in M31 2000 3 . ... From Giovanni Sostero (Remanzacco Observatory): at the end we have found a good Nova candidate in the course of our monitoring program in M31. ... Remanzacco Observatory Light curve This is a preliminary lightcurve of Nova M31-3 from the images we collected and those provided by others. ... vsnet-alert 5346 ] [FWD] Suspected Nova in M 31 . ... vsnet-alert 5349 ] (fwd) M31 possible nova . ... vsnet-alert 5355 ] [FWD] New image of the possible Nova in M31 (GSo) . ...

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Stellarium 0.12.3 . ... Classes . ... Scripting . ... Scripting Engine . ... Script Console . ... Since version 0.10.1, Stellarium includes a scripting feature based on the Qt Scripting Engine . ... Prior to version 0.10.0, Stellarium used a different scripting engine called StratoScript . ... Prior to version 0.10.0, Stellarium had a simple scripting engine, known as StratoScript . ... This script prints "Hello Universe" in the Script Console output window. core.debug( "Hello Universe" ); . ...

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... Recognition of Anomalous Events S. Monai 1,2 and F.Pasian 2 1 Osservatorio Astronomico di Brera Merate, Italy 2 Osservatorio Astronomico di Trieste, Italy Abstract. We present an original algorithm for the recognition of anomalous events in a CCD frame (i.e., cosmic hits, bad pixels etc.) ... Raw images, as read from a CCD, are often a#ected by some events which are revealed by anomalous pixel values, i.e., single saturated pixels or pixels at zero intensity (also named hot or bad pixels). ...

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