... About ATNF overview . ... Governance overview . Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Our people overview . ... ATCA . ... Images . ... ATNF researchers have used the Australia Telescope Compact Array near Narrabri to image the radio remnant of SN 1987A at 12 mm wavelength (18.5 GHz) using all six antennas of the Compact Array to give a maximum baseline of 6km. This image is the highest resolution image ever obtained with the Compact Array. ...

Astronomy Picture of the Day . Surveyor At Mars . ... 6.10.1997 . ... Credit: MGS Project , JPL , NASA Explanation: Mars Global Surveyor achieved Martian orbit on September 11 and began aerobraking into its final mapping orbit, a process that will take until March next year. ... October 1997 . ... Publications with keywords: Mars - Surveyor . Publications with words: Mars - Surveyor . ... Victoria Crater on Mars . ... Inside Victoria Crater on Mars . A Path Into Victoria Crater on Mars . ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. October 6, 1997 . Surveyor At Mars . Credit: MGS Project , JPL , NASA . Explanation: Mars Global Surveyor achieved Martian orbit on September 11 and began aerobraking into its final mapping orbit, a process that will take until March next year. ... About APOD > . ... NASA Technical Rep.: ... A service of: LHEA at NASA / GSFC . ...

... 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 ...

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. ...

... ST-ECF, ESO, STScI and the NICMOS IDT organized a workshop on near infrared imaging from space and ground was held in Pula on May 26-27, 1998. ... The meeting was held in May 1998, about one year after science observations started with NICMOS, and about half a year before the Infrared Spectrometer and Array Camera (ISAAC) starts to operate on the VLT. Currently, it is expected that NICMOS will operate until the end of 1998. ...

Solar High Resolution Studies . ... Solar Group . ... High quality observations obtained in recent years have highlighted the fact that the solar atmosphere is extremely dynamic, and wholly permeated and shaped by magnetic fields at very small spatial scales. ... The Solar Group in Arcetri is initiating a project to study some of the topics and techniques that will be brought to the forefront of solar physics as this new physical regime is explored. ... Small Scale Activity . ...

... Meta Index / Home Page / Description / Soft flare rejection for . The EPIC-pn fast timing mode was designed so that a time resolution of 0.029 milliseconds can be achieved. ... Below this energy the data is affected by so-called soft flares which are caused by stack overflows generated by high energy particles. These so-called soft flares have sharp rise (from 0 counts/sec to several thousand counts/sec in 0.10-0.15 sec) then decaying back 0 counts/sec slightly slower in about 0.3-0.4 sec). ...

... Therefore, we see that some spectral resolution is achieved by selection of the wavelet size, and some temporal resolution follows from the location of the wavelet relative to the signal (Fig. ... Figure 6: Contour line representation of the wavelet transform for a near-continuum of durations. We can identify the individual peaks and troughs of the cosine wave as well as their frequency: this compromise between the temporal domain and the spectral domain is the hallmark of wavelet transforms. ...

... Incorrect Resolution Element Used by COS ETC for new G130M Modes . ... HST Overview . ... The resolving power of the two new COS/FUV G130M modes (cenwave=1055 and cenwave=1096) decreases with increasing wavelength, from R ~ 3000 at 950 ? ... Since the ETC uses a 6-pixel resolution element that is 5 and 19 times smaller, respectively, it will overestimate the time required to achieve a certain S/N per 30-pixel or 115-pixel resolution element, while underestimating the S/N obtained for a given time. ...

A1447 2000-May-27 15:36:30 Technical Page Proposal Type: Regular General Category: Astronomy Sub-Category: Spectroscopy Observation Category: Galactic Total Time Requested: 5 Hours Proposal Title: HI Self-Absorption study of B5 and L1544 ABSTRACT: We propose observing atomic hydrogen inside dark clouds through 21 cm self-absorption. ... With highest angular resolution and nest velocity resolution of HI dark-cloud maps ever achieved, the data set will reveal velocity structure and column density in HI. ...

... The remote planet Pluto and its moon Charon orbit the Sun at a mean distance of almost 6,000 million kilometres, or nearly fourty times farther out than the Earth. During a recent investigation by an international group of astronomers [1], the best picture ever of Pluto and Charon [2] was secured with the European Space Agency's Faint Object Camera at the Hubble Space Telescope (HST). ... The new HST image was taken when Charon was near its maximum elongation from Pluto (0.9 arcseconds). ...

... Thus all regions of the 0.94-2.50 micron wavelength range accessible from Mauna Kea can be recorded using five fixed angle gratings. ... Grating Angle . ... Efficiencies for the NIFS gratings are shown above. The NIFS spectrograph uses a Bouwers collimator and a refractive camera. ... With these assumptions, the NIFS system efficiency including the Gemini telescope optics but excluding the transmission of the adaptive optics system is about 0.17 e - /photon at J , and 0.22 e - /photon at H and K . ...

... 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 . ...

... Во-вторых, мы не будем отвечать на вопросы, которые вам задал кто-то другой и ответы на которые лично вас не интересуют (или интересуют лишь постольку, поскольку вам необходимо получить хорошую оценку). Отсюда, в частности, следует, что без ответа будут оставляться вопросы по задачам домашних заданий, зачетов, контрольных и т.п. В-третьих, мы не будем отвечать на вопросы типа "где в Интернете можно найти то-то и то-то?", поскольку для этого существуют специальные поисковые сайты. ...

... Resolution to be issued: . For reports, received before June 11: not later than 15 days after receiving . For reports, received on June 12-21: not later June 27 . For reports, received on June 22 - June 27: not later July 27 . For reports, received on June 28 - July 16: during the week July 26-30 . For reports, received on July 17-31: not later 4 weeks after receiving . ... Dr. Michael G. Gavrilov, Founding Chairman and Coordinator of the International Astronomy Olympiad (IAO) . ...

. Next: To both compress and Up: *display, xdisplay, xexamine* - Previous: *xdisplay* - Image Display . Display just the section of interest: . tv> xdisplay ``xdata$rp110590.qp[6700:7200,9100:9600]'' # range of x coord is 6700-7200, # range of y coord is 9100-9600. rsdc@cfa.harvard.edu . 1998-06-10

The Library of Medium Resolution Spectra of Galaxies . HyperLeda home | Documentation | ... We have assembled in the frame of the HyperLeda FITS archive a Library of Medium Resolution Spectra of Galaxies. ... Spiral galaxies . ... 1998A .. ... Early-type galaxies . ... 131.. ... 1997A .. ... L98031HP1 Note: The observations of early-type galaxies from Jan. ... This library is supplemented with more recent spectra also taken with the CARELEC spectrograph, but with a EEV CCD 696x2048. ...

... Bojan Nikolic web pages (r. 329) . ALMA . ... These errors are due to the refractive effects of the Earth?s atmosphere, specifically due to the (tropospheric) water vapour. ... Making use of information on baselines this long will require very accurate calibration and correction of atmospheric phase errors. ... The design of the ALMA phase correction system is summarised in Nikolic et al 2013 . Introduction to phase correction for ALMA . ALMA Goals . ALMA Phase correction strategy . ...

... Copyright of Images . I would like to thank each one of you who has taken the time to browse through this tour of the solar system. ... Here are some general conditions for use of this information. The Views of the Solar System web site along with many of the images and information are copyrighted by Calvin J. Hamilton . Many of the images come from NASA or other government sources and are in the public domain. ... Any NASA or JPL image can be freely used, but please give them credit. ...