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• ATNF Colloquium
• PPTA Wiki | Main / Highlights
• SNR1987A

... Therefore, if the dithered images do not uniformly sample the field, the center of light in an output pixel may be offset from the center of the pixel, and this offset may vary between adjacent pixels. ... Figure 3.4: PSF Resulting from Non-uniform Sampling . PSF is taken directly from the HDF-N F450W drizzled image and shows substantial variation about the Gaussian due to the effects of non-uniform sampling, as well as possible additional charge-transfer effects in the CCD. ...

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• Evaluation of Image Restoration Algorithms Applied to HST Images
• Choice of Broad Band Filters
• Linear Reconstruction of the Hubble Deep Field

... The algorithm, known as Variable-Pixel Linear Reconstruction (or informally as ``drizzling"), preserves photometry and resolution, can weight input images according to the statistical significance of each pixel, and removes the effects of geometric distortion both on image shape and photometry. ... Drizzling'' maps pixels in the original input images onto the pixel grid of a subsampled output image, taking into account shifts and rotations between images and the optical distortion of the camera. ...

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• Star Finding and PSF Determination using Image Restoration
• Astronomical Image Compression Using the Pyramidal Median Transform
• Interpolation of Irregularly Sampled Data Series---A Survey

XMM ґNewton CCF Release Note XMM ґ CCF ґRELґ5 EPIC Energy Scale D Lumb October 3, 2000 1 CCF components Name of CCF VALDATE List of Blocks changed CAL VERSION XSCS flag EMOS1 ADUCONV 0008 2000 ґ01ґ01T00:00:00 ADUCOEFF OFFґ SET GAIN ENґ ERGY COMBINE YES EMOS2 ADUCONV 0008 2000 ґ01ґ01T00:00:00 ADUCOEFF OFFґ SET GAIN ENґ ERGY COMBINE YES EPN ADUCONV 0009 2000 ґ01ґ01T00:00:00 ADUCOEFF OFFSET GAIN ... For MOS Timing Mode, the gain was incorrect in hardware from mission start until ca. ...

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• Procedure

Первый компьютер . ... Его память вмещала 72 числа. ... Еще в 1934 году находившийся по другую сторону баррикад, в III Райхе, 23 летний студент берлинского политеха Конрад Цузе (Konrad Zuse) придумал новое устройство, архитектура и принципы работы которого в общих чертах совпадали с современными цифровыми компьютерами. ... Используя ту же память, Цузе к апрелю 1939 г. построил следующую модель компьютера (Z2), имевшую процессор на электромеханических реле. ... Именно к последним Цузе и принадлежал. ...

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• Glava 5

... A significant amount of effort was devoted to the question of the properties and observability of meteors in the atmospheres of Venus and Mars. ... The work on meteors in the atmosphere of Venus complements earlier work by Christou (Planetary & Space Science, 47, 1475, 1999) which investigated the possibility of meteor showers on Mars. ... Figure 4: Comparison of Mutual Events Data obtained from Armagh Observatory (red dots) and Nyr?l? Observatory, Finland (green dots), on 15 March 2003. ...

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• Reduction of Mutual Event Data

... The world standard in telescope oculars, Meade Series 4000 eyepieces yield the widest possible fields of view, consistent with pinpoint edge-of-field sharpness and long eye relief and yet with extremely low astigmatism, spherical aberration, and off-axis color. ... Your Series 4000 eyepieces are superb, with the Super Wide Angle 32mm and Ultra Wide Angle 14mm (two incredible eyepieces) being particular favorites of mine. ... Meade Series 4000 8mm - 24mm Zoom Eyepices (1.25") . ... about meade | ...

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• Meade Sports Optics - How to Select the Right Binocular

... Astrophysics Group . ... Work begins on the world?s most powerful radio telescope . ... SKA AAVS0 array . ... SKA Aperture Array in Australia . ... Even in its earliest phase (SKA1), the radio telescope will be the fastest and most sensitive in the world. ... A further two instruments will be in the Western Australian desert: one being an array of many hundreds of aerial clusters working at low radio frequencies, the other a range of around 90 dishes ? ...

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• Astrophysics Group SPIE 2008 Papers
• Publications David Buscher
• Workshop on Simulations for ALMA

... A2302 Date Received: 2007-Feb-01 17:03:45 Technical Page Proposal Type: General Category : Sub- Category : Observation Category : Total Time Requested: Minimum Useful Time: Prop osal Title: Regular Astronomy Spectroscopy Galactic 6 Hours 1 hour A Survey for Thermal CH3 OH 6.7 GHz Emission toward Massive Star Forming Regions ABSTRACT: Massive stars form in dense molecular cores where the intense radiation field from young ...

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• http://www.naic.edu/vscience/schedule/tpfiles/PeektagA2587tp.pdf
• I-GALFA View of a Galactic Tangent Region

... Improved measurements of Sun to advance understanding of climate change . ... We are eager to see how this lower irradiance value affects global climate models, which use various parameters to reproduce current climate, incoming solar radiation is a decisive factor,т?? said Lean. т??An improved and extended solar data record will make it easier for us to understand how fluctuations in the Sun's energy output over time affect temperatures, and how Earth's climate responds to radiative forcing." ...

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• Mysterious phenomena in a gigantic galaxy-cluster collision | Astronomy.com
• Surprise pancake structure in Andromeda Galaxy upends galactic understanding |
• NASA lands car-sized rover beside martian mountain | Astronomy.com

... Archives . ... Especially, compressed sensing and single pixel cameras drags my attention more because the topic stimulates thoughts of astronomers in virtual observatory [ 1 ] and image processing [ 2 ] (it is not an exaggeration that observational astronomy starts with taking pictures in a broad sense) and statisticians in multidimensional applications, not to mention engineers in signal and image processing. ... Category: Algorithms , Cross-Cultural , Data Processing , Imaging | ... Chandra Blog ...

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Astronotes Armagh Planetarium's Stellar Blog! ... Moon . ... By admin March 29, 2012 Posted in: April . ... This is the perfect time of the year to view Saturn as it is gliding across the sky alongside the brightest star in the constellation of Virgo , Spica . ... Despite this impressively bright star Virgo is a relatively dim constellation that represents the goddess of corn and agriculture and is the second largest in the night sky, only the constellation of Hydra the Water snake is larger. ...

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... Expected NICMOS Performance after HST Servicing Mission 3 . NICMOS Cooling System Design . ... NASA is developing the NICMOS Cooling System (NCS) to provide operation of NICMOS beyond the exhaustion of its stored solid nitrogen cryogen. ... The NCS combines an external radiator identical in design to the ACS/STIS Aft Shroud Cooling System (ASCS) planned for SM3, a Creare, Inc. reverse-Brayton cycle turbine cooler, and an EVA installed neon loop to the NICMOS dewar's cooling coil. ...

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... Home Articles NYC Urban Starfest ? Background & History of the Event . ... Urban Starfest in Central Park . ... Beyond New York City . ... A History of the First Forty Years of the Amateur Astronomers Association . ... NYC Urban Starfest - Background History of the Event . ... Today the NYC Urban Starfest, while somewhat smaller in nature & scope, but still a most wonderful event, is solely coordinated and directed by the Amateur Astronomer?s Association and the NYC Urban Park Rangers. ...

136. Communications For Your Astronomy Event - an Astronomy Net Article