Next: 2--Dimensional Images Up: Test Data Previous: Test Data . Modern solid-state detectors produce data which differ in two main aspects from classical photographic images: (a) a much higher S/N (signal to noise ratio) and (b) the rigid spatial digitisation of the incoming flux. ... The usage of the programs and images that we provide as a reference test package should also facilitate documentation of possible application software malfunctions and their subsequent repair. ...

... Two additional extensions contain the polynomial coefficients describing the distortion for all the filters. FILTER-U . ... Each extension FILTER-FilterId holds a binary table sampling the detector distortion of a specific filter at a coarse resolution ( 1 datapoint every 25 subpixel). ... The filter element is found in the column FILTER_ID. The required binary table entry is identified by matching the value of the column FILTER_ID with the State Variable FilterID. ... not applicable . ...

... Previous: Background Fluctuation Analysis from the Multiscale Entropy . ... A new measure of information is defined which is based on noise modeling and incorporates resolution scale. Properties of this measure are discussed. ... Additionally it allows for image noise modeling, and subsequent noise removal. ... Hence information- and entropy-based processing technologies will be necessary for the effective design and implementation of large, future generation, image databases. ...

An improved correlator for ALMA has been proposed by an European consortium including Astron (NL), Bordeaux University (FR), IRAM (FR) and Arcetri. ... The work in Arcetri has focused on the efficent design of a digital receiver, that exploits the peculiarities of the astronomical signal, i.e. the extremely coarse quantization and the stochastic nature of the input signal. ... A complex mixer followed by a two stage bandpass filter. ... Phase effects in a hybrid correlator . ...

... Donate to Support Science Literacy . ... 2016 Annual Awards . The ASP is accepting nominations for the organizationтАЩs national annual awards which recognize special achievements in astronomy research, technology, education, and public outreach. ... Shop the AstroShop . ... The Astronomical Society of the Pacific (ASP) is accepting nominations for the organizationтАЩs national annual awards which recognize special achievements in astronomy research, technology, education, and public outreach.. ...

Instrument Overview . ... Spectral Filters . Quantum Efficiency and Exposure Limits . ... Which Instrument to Use: WFPC2, ACS, NICMOS, or STIS? Comparison of WFPC2 and ACS . Comparison of WFPC2 and NICMOS . Comparison of WFPC2 and STIS . History of WFPC2 . ... WFPC2 . ... What's New in Version 5.0 for Cycle 10 . ... Calibration Channel . ... LRF Photometric Calibration . ... Wood's Filters . ... Sources of Dark Current . ... Calibration Plan Summary . Cycle 4 Calibration Plan . ...

SAI 175 anniversary . ... Moscow University . Search for in SAI Moscow University Search for in Russian astronomical resources . ... SAI Astronomical Databases . ... Browse SAI Software archive(ftp.sai.msu.su) . ASTRONET.RU - Russian Astronomical Network (available in translit also) . ... SAI Supernovae Research Group . ... Department of the Galaxy and Variable Stars (in Russian) . Sternberg Astronomical Institute Seminars . ... All-Russian Astronomical Olympiad (in Russian) . ...

... Posts tagged ?filter? ... A fast Bayesian approach to discrete object detection in astronomical datasets ? ... ArXiv] A fast Bayesian object detection? ... Comment . ... vlk on [MADS] Parallel Coordinates . ... Algorithms arXiv Astro Bad AstroStat Bayesian CHASC Cross-Cultural Data Processing Fitting Frequentist Galaxies gamma-ray High-Energy Imaging Jargon Job Languages MC MCMC Meta Methods Misc News Nuggets Objects Optical Physics Quotes Spectral Stars Stat Timing Uncertainty X-ray . ...

The low pass digital filters (lpdf) were simulated in software. ... Generate an in band sine wave (amplitude=10) and process it through the lpdf for each decimation. Generate noise (with an rms of 10) and filter it with the 4 decimations. ... Page 1: filter for decimate=4,8,16,32, The dcGain is the integral over each filter divided by the decimation length. ... Page 2: pushing a sine wave through the filter. ... Bottom: (sine waves)/decimation after filtering. ... Page 3: filtering noise. ...

... Обзор LPR фильтра. Впечатления от наблюдений с LPR фильтром. ... Характеристики цветных фильтров Baader-Planetarium . Мой перевод pdf- файла о фильтрах с сайта Baader-Planetarium (379 кб) . ...

... ATNF Home . About ATNF . ... About ATNF overview . News | ... Governance overview . Australia Telescope Steering Committee . ... ATNF Technical Memos . ... Technical aspects of the new AAO/UKST H interference filter . ... We briefly describe technical aspects and specifications of the new UKST H interference filter which is probably the largest of its kind available in astronomy. ... The prospects for the new UKST H survey of the Southern Milky Way with this new filter are excellent. ...

... Meade Instruments Corporation . ... Meade Pictor 616A Color Filter System Instruction Manual . ... Remove the Meade Pictor 616A Color Filter System from the telescope or camera. Use the supplied hex wrench to remove the three screws from the telescope side of the Meade Pictor