... Up: Algorithms . ... The imaging problem can be described as an optimizing problem in mathematics. ... Computer simulations of rotating modulation collimator imaging show that the quality of images from this method is better than that from the traditional cross-correlation method. ... The imaging problem is: . ... The results show that this algorithm can be used in the imaging problem and usually results in a better image than that obtained from a traditional method such as cross-correlation. ...

Еще в разделе: (Показать все результаты (>1954) - www.adass.org/ )

• A New Entropy Measure Based on Multiple Resolution and Noise Modeling
• Towards a General Definition for Spectroscopic Resolution
• Developing a Wavelet CLEAN Algorithm for Radio-Interferometer Imaging

... December 21, 1997 . ... Advantages are briefly discussed of gaining in spectral resolution, which is accompanied by losses in signal level, as compared with the attempts to improve the accuracy of measurement of line parameters by means of rising the S/N ratio alone with increasing the exposure time. To partially solve the problem of observations of faint objects at the BTA a new design echelle spectrometer is proposed. high resolution spectroscopy . ...

Еще в разделе: (Показать все результаты (>799) - jet.sao.ru/ )

• High-resolution Near-infrared Study of the Deeply Embedded Young Stellar Object

... Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 . ... Power spectral analysis (PSA) has proven to be an important tool for high spatial resolution measurements from ground based interferometry. ... While many images from HST are far too complicated for PSA, there are a class of scientific problems for which it is a very effective technique for handling the problems created by the HST point spread function. ... Power Spectral Analysis . ...

Еще в разделе: (Показать все результаты (>9228) - www.stsci.edu/ )

• Image Restoration and Super-Resolution by Novel Applications of a Neural...
• N??ez LLacer: Image Restoration with Variable Resolution
• Superresolution of SN 1987A: A Comparative Deconvolution Study

ABSTRACT . Single electron detection is desirable in systems incorporating EBCCDs. The sources of noise in single electron counting are discussed and an expression is given for the total noise. INTRODUCTION . Electron bombarded charge coupled devices (EBCCDs) have been recognized as having performance advantages over competing technologies in terms of their high sensitivity, low noise and high spatial resolution. ...

Еще в разделе: (Показать все результаты (>1413) - www.sao.ru/ )

• Direct electron imaging-abstract
• Radio survey for new compact HII regions
• The ROSAT AGN

... ATNF Home . About ATNF . ... About ATNF overview . ... Governance overview . Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Our people overview . ... Publications overview . ... ATNF facilities . ... Parkes radio telescope . ... Visiting Parkes radio telescope . ... Parkes radio telescope webcam . ... Images . ... The MAPPIT (Masked APerture Plane Interference Telescope) instrument has been used for NRM observations at the 3.9m Anglo-Australian Telescope. ...

Еще в разделе: (Показать все результаты (>13380) - www.atnf.csiro.au/ )

• An Imaging Survey of the Northern Galactic H Emission with Arcminute Resolution
• Programme - Abstract
• Resolution of an interferometer

... We have generated high resolution maps by using standard spherical harmonics expansion for the CMB fluctuations and by extrapolating available full sky maps to predict the Galaxy emission at frequencies and angular scales appropriate to the PLANCK space mission. ... Beam responses are typically not symmetric when they are coupled to a telescope to reach high resolutions, whereas theoretical predictions and standard deconvolution methods generally assume pure symmetric beams. ... PPEUC Proceedings . ...

Еще в разделе: (Показать все результаты (>1147) - www.mrao.cam.ac.uk/ )

• VLBI observations of the quasar 3C380
• CO in NGC 1530, aperture synthesis of a barred spiral
• Molecular oxygen in interstellar clouds

... We present 7mm observations of the dusty disk surrounding the 10 Myr old 1.5 Msun pre-main-sequence star CQ Tauri obtained at the Very Large Array with 0.8 arcsecond resolution and 0.1 mJy rms sensitivity. ... We find that the disk radius is constrained to the range 100 to 300 AU, depending on the steepness of the disk surface density distribution. The power law index of the dust opacity coefficient, beta, is constrained to be 0.5 to 0.7. ...

Еще в разделе: (Показать все результаты (>6382) - www.arcetri.astro.it/ )

• G35.20-1.74 (Abstract)
• serplines (Abstract)
• BD_disks (Abstract)

... Science . ... Science Users Information > Science Activities > PhD Thesis Topics offered by ESO Faculty Members > Thesis Topic: High-mass Star Formation at High-Angular Resolution . ... Data Handling and Products . ... Science Data Products Forum . ... ESO Data . ... ESO Data Access Policy . ... This project aims to obtain a better understanding of high-mass star formation by performing a comparative study of sites of high-mass star formation that display SiO maser (radio laser) emission. ...

Еще в разделе: (Показать все результаты (>65563) - www.eso.org/ )

• ESO - Circumstellar Dynamics at High Resolution
• ESO - star07
• ESO - HIRES 2014: Astronomy at High Angular Resolution - A Cross-disciplinary

... 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 ...

Еще в разделе: (Показать все результаты (>202) - mavr.sao.ru/ )

... Using the DRAO Synthesis Telescope (Landecker et al. 2000), the Canadian Galactic Plane Survey ( CGPS ; Taylor et al. 2002) has captured a multitude of HISA features, the majority of which are invisible in prior surveys at lower resolution. ... Since the HISA gas temperature must be less than the background brightness temperature, all the H I shown in this poster has T ~ 100 K. Figure 1 provides panoramic views of the cold H I visible as HISA in the CGPS. ... GIFs: HISA + CO | HISA only | ...

Еще в разделе: (Показать все результаты (>3972) - www.naic.edu/ )

• HISA Poster for the 197th Meeting of the AAS, January, 2001
• Abstract: T. Landecker
• CGPS HISA Publications

... Design of Imaging Optics . Analyzing Optics . ... The high resolution near infrared camera (CONICA) for the first VLT unit telescope is under development. It serves as a multi-mode instrument for the wavelength region between 1.0 and 5.0 microns, providing diffraction-limited spatial resolution when combined with the adaptive optic system NAOS of the VLT (Rosset et al. ... VLT instrumentation, ALADDIN InSb detector, NIR imaging, NIR spectroscopy, re-imaging optics, IR optics . ...

Еще в разделе: (Показать все результаты (>244) - www.stecf.org/ )

• ESA-ESO Working Groups
• Near IR Astronomy with the ESO VLT
• STScI NICMOS Software

Lindsay Magill, Wallace High School, Lisburn, 22 August 2003 . Sky Glow on Charlton Heath . ... About Light Pollution . Eliminating Light Pollution . Survey of Armagh . ... The Armagh Observatory is adversely affected by the growing problem of light pollution in the Cathedral City of Armagh. ... A report needed to be written on the impact of light pollution on Armagh, why people should change it and how to do it. ... This would allow the Observatory to make a case against light pollution. ...

Еще в разделе: (Показать все результаты (>1733) - star.arm.ac.uk/ )

• Abstract 192
• Armagh Observatory
• Classification of hot sub-dwarfs

... Higher Criticism Statistic: Theory and Applications in Cosmology and Astronomy [.pdf] . ... pdf ] . ... Fitting Narrow Emission Lines in X-ray Spectra [.pdf] . ... A Convex Hull Peeling Depth Approach to Nonparametric Massive Multivariate Data Analysis with Applications . Abstract: We explore the convex hull peeling process to develop empirical tools for statistical inferences on multivariate massive data. ... We define the convex hull peeling depth, which enables to order multivariate data. ...

Еще в разделе: (Показать все результаты (>3109) - hea-www.harvard.edu/ )

• Cool Stars 10 - V. Kashyap and J. Drake: DEM Reconstructions
• HEAD 2010: Chandra's Ultimate Angular Resolution
• SAO RSDC Home Page - RRA

... Direct observation of the vortex structure in high- T c superconductors in tilted magnetic fields. Abstract: . A high-resolution Bitter technique has been used to observe an effect of tilting the external magnetic field on the flux line lattice (FLL) in Tl 2 Ba 2 CaCu 2 O 8+x single crystals. ... The reason is believed to be that the formation of the equilibrium vortex state (vortex chains) was prevented by strong pinning, revealed for our crystals by the M(t) curves. ...

Еще в разделе: (Показать все результаты (>789) - www.issp.ac.ru/ )

• LPCBC: Abstract 2_29
• LPCBC: Abstract, 2_23
• LPCBC: Abstract 2_22

Astrophotography Forum Message . ... The resolution of a CCD camera does not depend on the number of pixels in the camera, rather it depends on the size of the pixels making up the chip and the focal length of the lens forming the image. ... A larger chip made from the same substrate will have identical pixel sizes, just more of them. ... With a fixed focal length telescope we don't have that luxury, in which case smaller pixel size rather than larger chip size is the only way to increase resolution. ...

Еще в разделе: (Показать все результаты (>199) - www.astronomy.net/ )

• Resolution - an Astronomy Net ATM Forum Message
• Measuring Resolution - an Astronomy Net ATM Forum Message
• Indoor Resolution - an Astronomy Net ATM Forum Message

To appear in "Fourth Workshop on Robotic Autonomous Observatories (2015)"RevMexAA(SC) MASSIVE PHOTOMETRY OF LOW-ALTITUDE ARTIFICIAL SATELLITES ON MINI-MEGATORTORA S. Karpov, 1, 3 E. Katkova,2 G. Beskin, 1, 3 A. Biryukov3,4 S. Bondar,2 E. Davydov5 E. Ivanov,2 A. Perkov,2 V. Sasyuk3 RESUMEN Favor de prop orcionar un resumen en espanol. ... The nine-channel Mini-MegaTORTORA (MMT-9) optical widefield monitoring system with high temporal resolution system is in operation since June 2014. ...

Еще в разделе: (Показать все результаты (>77) - vo.astronet.ru/ )

• http://vo.astronet.ru/~karpov/pdf/2015_Malaga_mmt_meteors.pdf
• http://vo.astronet.ru/~karpov/pdf/2014_Sasyuk.pdf
• http://vo.astronet.ru/~karpov/pdf/2015_Terskol_mmt_meteors.pdf

Title: A New Model of the Gravitational Lens 0957+561 and a Limit on the Hubble Constant . Authors: Norman A. Grogin , Ramesh Narayan (Harvard Univ.) ... Title: ROSAT/PSPC observation of the distant cluster CL0939+472 . ... Title: Interaction in the Bimodal Galaxy Cluster A3528 . ... Title: Cosmological Implications of Galaxy Cluster Evolution . ... Title: Galaxy Cluster Virial Masses and Omega . ... Matches 201 to 222 from a total of 222 matches for the search pattern galaxy cluster . ...

Еще в разделе: (Показать все результаты (>34) - sed.sao.ru/ )

• astro-ph authors/title/abstract search for 'galaxy environment' all years
• astro-ph authors/title/abstract search for 'galaxy merging' all years

ПЕРЕЛ?К ПУБЛ?КАЦ?Й СП?ВРОБ?ТНИК?В ГАО . ... K., 2005.- ... Sosonkin M.G. Godunova V.G. Monitoring of the Earth's atmosphere at the Terskol Observatory: current status and prospects. ... Кондрашова Н.Н. Прокудина В.С. Динамика и морфология мощной солнечной вспышки. 5-я Укр. конф. по космич. исслед., Евпатория, НЦУИКС, сент.4- 11, 2005: Сб. тез. 2005 . ... JOURNEES 2005 "Earth dynamics and reference systems: five years after the adoption of the IAU 2000 Resolutions", Warsaw, Poland, Sept. ...

Еще в разделе: (Показать все результаты (>216) - www.mao.kiev.ua/ )

... The dependence of velocity ellipsoid parameters for various types stars upon theirage was investigated. ... For metal-rich stars ([Fe/H] -0.1) the shape of velocity ellipsoid becomes more spherical with increasing age of the stellar group and it approaches the equilibrium shape. ... По данным uvby -фотометрии, изохронным возрастам и собственным движениям ~3500 F -звезд диска в окрестности 80 пс от Солнца исследованы зависимости параметров эллипсоидов скоростей различных звезд от возраста. ...

Еще в разделе: (Показать все результаты (>51) - ip.rsu.ru/ )

• URSI-99 Poster on Phase Structure Function

... In addition to time, frequency, and scale, there are two other coordinate axes within this transform space: shear-in-time (obtained through convolution with a q-chirp) and shear-in-frequency (obtained through multiplication by a q-chirp). Signals in this multidimensional space can be obtained by a new transform which we call the ``q-chirplet transform'', or simply the ``chirplet transform''. ... CHIRPLET TRANSFORM SUBSPACES . ... Relationship Between Auto Chirplet FF Plane and Radon Transform . ...

Еще в разделе: (Показать все результаты (>2097) - crydee.sai.msu.ru/ )

• No Title
• Album: Resolution
• The pyramidal (multi-resolution) CCT