... 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. ...

. ( < 10nm) . NAME CENTER(nm) FWHM(nm) TMAX(%) DIMENSIONS(mm) TRACES DATA . H-alpha 655.2 9.09 67.56 50x50x5 (1) (2) trace data . Hodge on/off H-alpha . (Not on-site at APO, but can be obtained on loan--contact Paul Hodge at UWash, hodge/astro.washington.edu) . UW-WSU Nebular Emission-Line Filters . (Not on-site at APO, but can be obtained on loan--contact Jeff Morgan at UWash, morgan/astro.washington.edu) . York narrow-band interference filter set . What to do with the trace data. APO Filters Homepage

... GPI Data Pipeline 1.0 documentation . GPI IFS Data Handbook . ... Filters and Spectra . Filters . Spectral Layout . ... GPI has five wide band filters. ... Filter . Min Wavelength . ... Filter transmission profiles are distributed as part of the GPI data pipeline, in files in the $GPI_DRP_DIR/pipeline/config/filters subdirectory. ... The wavelength dispersion axis is in the Y direction in GPI raw 2D data files. ... The spectral dispersion is very roughly 0.017 microns/pixel. ...

... 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 overview . ... Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Astrophysics graduate student programs . ... Facilities . ATNF facilities . ... Australian Square Kilometre Array Pathfinder . Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . ... Visiting Parkes radio telescope . Visiting Australia Telescope Compact Array . ... Parkes radio telescope webcam . ...

... Дни открытых дверей к юбилею САО РАН (12-14 апреля 2016 г.) . Международная конференция "Dark Ages and White Nights (Spectroscopy of the CMB)" (20-24 июня 2016 г.) . ... Международная конференция MULTI-SPIN GALAXIES - 2016 (26-30 сентября 2016 г.) . Международная астрономическая конференция "Физика звезд: от коллапса до коллапса" (3-7 октября 2016 г.) Архив . ... Подробнее.. ... 10.02.16 . ... БТА в реальном времени . ... Цейсс-1000 в реальном времени . ... Последнее обновление: 22/03/2016 ...

... Series 4000 filters thread into the barrels of virtually all 1.25" eyepiece brands. Meade Series 4000 filters are a large 26mm in clear aperture and are manufactured from the purest crown optical glass, dyed-in-the-mass ( not "color coated"); there are no finer filters available for telescopic applications. ... For visual applications Series 4000 filters thread into the barrels of all Meade 1.25" eyepieces, and into the barrels of virtually all other 1.25" eyepiece brands as well. ... Meade 4M | ...

Subject, Object and Problems of Astrophysics. Practical and Theoretical Astrophysics. ... Visual Telescope; Problems Which Are Solved with the Its Help. ... Resolution of Telescopes. ... Effectiveness of Telescope in Respect of Resolution. ... Optical Power of Telescopes for Star-like and Extensive Objects. Boundary Magnitude. Reasons of Light Dissipation in Telescopes. ... Spectral Instruments in Astrophysics. ... Basic Photometrical Ideas, Magnitudes and Their Measurement. ...

... omichain (omichain-1.50) [xmmsas_20070708_1801-7.1.0] . ... The omichain then cycles through each filter in the filter list and processes each exposures in the exposure list for that filter. ... First it checks to see if the exposure is a full-frame low resolution mode, and if so it runs omcomb to combine the four separate image segments into a single full-frame image, which is then processed instead of the individual image segments. ...

... Overplot the 20 bandpasses normalized to 1 sec (.ps) ( .pdf ): . ... Mean power, voltage, and spectral jumps vs decimation (.ps) ( .pdf ) . ... The mock spectrometer has a high resolution mode that will digitally filter the input bandwidth from 2 to 1024 in steps of 1. ... For each decimation, the input rms levels was to so that 30 counts=1 sigma. ... The plots show the results of the test: . ... Top mean power vs decimation normalized to the mean power with no decimation (dec=1). ... No decimation ...

... This noise can be reduced by replacing the pixels with an average of the surrounding values using a linear filter. ... The effects of applying linear filters to a CCD frame is shown in Figure . Figure: Different digital filters applied on a CCD image: (A) original, (B) block filter, (C) smooth filter, and (D) Laplacian filter. ... To remove stellar images from a picture of comet Halley, the results of applying different non--linear filters to the frame are given in Figure . ...

... CfA Home . HCO Home . SAO Home . ... Welcome to CfA . CfA History . ... Laboratory Astrophysics . Extreme Astrophysics . ... 617) 495-7210 . ... 617) 495-7044 . ... 617) 495-7265 . ... HEA Research . ... HEA Home Page . CFA/HEA Home Page . ... High Energy Astrophysics Division (HEAD) . Chandra X-ray Center . ... Chandra Cluster Cosmology Project . Chandra Multiwavelength Project (ChaMP) . ... Chandra-Planck Clusters Project . ... CfA Virtual Observatory Project . ...

The following papers summarize the characterization and technical performance of IBIS : . ... Characterization of Fabry-Perot interferometers and multi-etalon transmission profiles. ... Righini, A., Cavallini, F., Reardon, K. P., 2010, Astronomy and Astrophysics , 515 , A85, . ... The filter wheel is located between the two interferometers. ... The interferometers can be rapidly tuned, simultaneously, so to allow sequential scanning of the spectral lines of interest (see movie in IBIS Intro ). ...

... Astrophysics Group . ... Surveys and Catalogues . ... The main 7C survey at 151 MHz with resolution 70У?70Тљcosec(declination)Тљarcsec 2 (EWУ?NS) covers a large part of the northern hemisphere above declination 30ТА, excluding the Galactic plane.There is now a final unified non-redundant catalogue for this main survey in ASCII format together with a CDS-style ReadMe file, both available by ftp from MRAO. ... Regions surveyed at resolution 70У?70 cosec(dec) arsec 2 , ftp accesses standardised data: ....

RTT150 . Russian-Turkish 1.5-m Telescope . ... Until 2002 observations were mostly performed with ST-8E CCD in the 1:7.7 Cassegrain focus. ... In April, 2003 telescope was equipped with a larger-size CCD Andor DW436 . ... 2048 x 2048 pixels, . ... Since summer of 2002 the main focal detector of the RTT150 telescope was AP47p CCD in 1:7.7 Cassegrain focus. ... During September 3-13, 2002 works on installation of new autoguiding system ( photo 1 ) were carried out on RTT150 telescope. ...

... Tonight's Sky . ... Observing . ... Sky this Month . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Observing Podcasts . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . Springtime observing for small telescopes . ... Gift Center . ... Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

... Science Publications > Science Announcements > 8th VLTI Summer School: High angular resolution in astrophysics: optical interferometry from theory to observations . ... Observing with ESO Telescopes . ... ESO-MIDAS . ... ESO Data . ... ESO HST Image Galleries . ... ESO Data Access Policy . ... ESO Science Newsletter . ... Optical/infrared long-baseline interferometry has reached a new stage with the advent of multi-telescope arrays accessible to a broad community of astronomers, most notably VLTI . ...

... Sky Pollution Rejection Filters and What They Reveal About Nebulae . ... Thursday, Jun 14, 2012 at 8:00 PM . Our speaker will demonstrate how filters such as Orion Telescope's Ultrablock filter allow observers to see emission nebulae clearly even when the sky is polluted because of nearby lighting. ... Please join us for a pre-meeting dinner discussion at Changsho, 1712 Mass Ave, Cambridge, MA at 6:00pm before the meeting. ... Jun . ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

Here is a description of the Filter/Driver Pack Plus release from Aldus. ... The Macintosh Filter/Driver Pack Plus includes several new and updated filters, including import filters for Microsoft Works 3.0 and MacWrite Pro files, as well as the most recent LaserWriter driver, version 8.1.1. ... The Filter/Driver Pack Plus also includes a patcher utility which will update PageMaker 5.0 to version 5.0a. This patcher corrects a handful of reported customer problems. ...

M obile A stronomical Sy stem of TE lescope- R obots MASTER-II Kislovodsk Lomonosov Moscow State University, Sternberg Astronomical Institute , Moscow Union "Optic" , Kislovodsk Solar Station Latitude = 43 o љ44'.767љN; Longitude = 42 o љ31'.417љE; Altitude = 2067љm MASTERљIIљ(8љsquareљdegress) + MASTERљVWF(VeryљWideљFieldљCameras (FOV=800 square degrees, Timeљresolutionљupљtoљ150љms, with unfiltered m_lim=14m on 5 sec. exposure, and ~10.5m with 0.15 sec) . ... 11h 38m 38.0s , -09d 59m 59s) . ...