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1. NGC 7789: Galactic Star Cluster
... NGC 7789 is an open or galactic star cluster about 8,000 light-years distant toward the constellation Cassiopeia and lies near the plane of our Milky Way galaxy. ... These have evolved from main sequence stars like the sun into the gaggle of red giant stars apparent (with a reddish-yellow cast) in this lovely composite color image. ... Publications with keywords: star cluster - red giant - main sequence - NGC 7789 . Publications with words: star cluster - red giant - main sequence - NGC 7789 . ...
[ Сохраненная копия ]  Ссылки http://www.astronet.ru/db/xware/msg/apod/1999-07-09 -- 14.6 Кб -- 14.11.2006
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2. APOD: July 9, 1999 - NGC 7789: Galactic Star Cluster
... July 9, 1999 . NGC 7789: Galactic Star Cluster . ... Explanation: At 1.6 billion years old, this cluster of stars is beginning to show its age. NGC 7789 is an open or galactic star cluster about 8,000 light-years distant toward the constellation Cassiopeia and lies near the plane of our Milky Way galaxy. ... These have evolved from main sequence stars like the sun into the gaggle of red giant stars apparent (with a reddish-yellow cast) in this lovely composite color image. ... About APOD > . ...
[ Сохраненная копия ]  Ссылки http://www.sai.msu.su/apod/ap990709.html -- 4.8 Кб -- 02.10.2012
[ Сохраненная копия ]  Ссылки http://www.arcetri.astro.it/~palla/ANDREAIMMAGINI/ViaLattea/ngc7789_mochejska_big.html -- 4.7 Кб -- 02.03.2001
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3. Stars Beyond Maturity
... Stellar cinders . Born-again stars . ... Heavyweight Stars . ... What will happen inside the Sun and why? ... These are questions about "stellar evolution", the history of stars as they are transformed by nuclear processes deep inside. ... Most of what we know about stellar evolution comes from computer models of stars. ... We learn about the evolution of high-mass stars from HR diagrams of young galactic open clusters, and the evolution of low-mass metal-poor stars from old globular clusters. ...
[ Сохраненная копия ]  Ссылки http://star.arm.ac.uk/~csj/pus/astnow/astnow.html -- 8.6 Кб -- 09.06.2000
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4. Bright prospects: Comparing the H Survey with large-scale radio continuum
... About ATNF overview . ... Australia Telescope Steering Committee . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . ... Australia Telescope 20GHz Survey . ... Bright prospects: Comparing the H Survey with large-scale radio continuum emission . ... Prospects for comparisons between the AAO/UKST H \ survey and large-scale radio continuum emission are considered, with particular reference to the recently completed Parkes 2.4-GHz survey of the southern Galactic Plane. ...
[ Сохраненная копия ]  Ссылки http://www.atnf.csiro.au/pasa/15_1/duncan/paper/index.html -- 52.4 Кб -- 08.04.2016
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5. APOD: August 23, 1996 - NGC 3293: A Bright Young Open Cluster
... August 23, 1996 . NGC 3293: A Bright Young Open Cluster . ... Explanation: Hot Blue stars shine brightly in this beautiful, recently formed galactic or "open" star cluster. Open cluster NGC 3293 is located in the constellation Carina , lies at a distance of about 8000 light years, and has a particularly high abundance of these young bright stars. ... If true, star formation in this open cluster took at least 15 million years. ... About APOD | ...
[ Сохраненная копия ]  Ссылки http://www.sai.msu.su/apod/ap960823.html -- 4.7 Кб -- 02.10.2012
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6. ASP: Star Science in the Autumn Sky
Once students get the hang of it, they can find and measure the brightness of Delta Cephei in a few minutes. ... of Delta Cephei . ... Oct. ... The following table lists the measurements of Delta Cephei made by one amateur astronomer in autumn 1990. ... 4.0 . ... This activity is a simplified version of one that appeared in Hands-On Astrophysics, a series of activities prepared by the American Association of Variable Star Observers with support from the National Science Foundation. << previous page | ...
[ Сохраненная копия ]  Ссылки http://www.astrosociety.org/edu/publications/tnl/32/starscience4.html -- 18.8 Кб -- 02.10.2012
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7. Meade Instruments Corporation - #497 Autostar Computer Controller for ETX-90EC,
... Meade Instruments Corporation . ... Autostar Computer Controllers . 497 Autostar . ... One of the most important advances in telescope control in the past 25 years, the Meade #497 Autostar Computer Controller turns the ETX into an automatic celestial object locating system. ... The #497 Autostar Computer Controller plugs into the control panel of ETX-90EC, ETX-105EC, and ETX-125EC telescopes and enables automatic location of more than 30,000 celestial objects. ... about meade | ... Meade 4M | ...
[ Сохраненная копия ]  Ссылки http://www.meade.com/catalog/autostar/497_autostar.html -- 19.6 Кб -- 19.03.2008
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8. Главная - Астрономия и Телескопостроение
... Главная . ... Новости . ... Проекты . Любителям астрономии . Проект ISON . ... Подробнее . ... Категория: Новости проекта ISON . ... Метки: Космический мусор ,љ Астероиды ,љ Гамма-всплески ,љ Любителям астрономии ,љ Кометы љ . ... Метки: Космический мусор ,љ Астероиды ,љ Любителям астрономии љ . ... Новости обсерваторий проекта] - Обсерватория Кубанского государственного университета от Иванов А - 09.04.2016 11:08:49 . ... 1999-2013 Copyright "Астрономия и Телескопостроение" . ...
[ Сохраненная копия ]  Ссылки http://www.astronomer.ru/ -- 31.6 Кб -- 09.04.2016
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9. MILT Description
... This is possible at modest cost due to the low moments of inertia of the telescope and enclosure. ... This same performance will be achieved in higher winds when the telescope enclosure is facing away from the wind, or by using wind screens. ... The telescope system (MILT) will be remotely operable with an on-site operator's assistance by an astronomer located at one of the ARC member institutions. ... Mean Wind Speed . ... Offsets > 10 deg: 1 arc sec rms max . ... 5 sec max, tracking to tracking . ...
[ Сохраненная копия ]  Ссылки http://www.apo.nmsu.edu/Telescopes/eng.papers/milt/description.html -- 8.3 Кб -- 13.12.1993
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10. Articles written by astronomers for astronomers of all ages.
Astronomy Articles . Articles | ... Moon | ... Astronomy Binoculars - The Skies The Limit - by Scott Gray, September 2006 . ... Astronomy Terms - To Help You Study The Universe - by Scott Gray, October 2006 . ... Himalia is the only moon other than Europa, Ganymeade, Callisto and IO visible with small telescopes. ... The Harvest Moon refers to the Full Moon that comes closest to the autumnal equinox, or the first day of autumn. ... Think the study of stars is best left to professional astronomers? ...
[ Сохраненная копия ]  Ссылки http://www.astronomy.net/articles/ -- 20.1 Кб -- 09.04.2016
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11. Convolving data models with PSF models
Computer models of objects (galaxies, circumstellar disks, etc.) are often generated to compare with observed images. ... When comparing models to WFPC2 images, it is often forgotten that the instrumental PSF can have a very significant effect. ... Also, the undersampling of the WFPC2 cameras makes the model image very sensitive to subpixel alignment. ... Left) WFPC2 WFC F814W image of HH30 (0.1 arcsec/pixel); (Middle) Model of HH30 disk; (Right) Model of HH30 disk convolved with a Tiny Tim model PSF. ...
[ Сохраненная копия ]  Ссылки http://www.stsci.edu/software/tinytim/convmodel.html -- 5.0 Кб -- 31.03.2000
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12. Lunar equatorial positions. Explanations for Computer Ephemeris.
. Computer Ephemeris. Lunar equatorial positions. Explanations. Each row contains at 0 h and 12 h of Time Dynamical Terrestrial: month, day, apparent right ascension (hours, minutes, seconds), apparent declination (degrees, minutes, seconds of arc) and geocentric distance (in Earth's radii).
[ Сохраненная копия ]  Ссылки http://space.univ.kiev.ua/ephem/exp/Mo1.html -- 1.8 Кб -- 16.10.2004
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13. http://www.naic.edu/~phil/hardware/cor/compareBandpass.html
The computed band passes. ... The interim correlator input is filtered by 8 analog filters (50 Mhz wide at the 260 Mhz IF... one for each sub correlator). ... For bandwidths of 25 Mhz and below the real data stream is digitally down converted to complex samples I, Q streams. ... The Top figure is the halfband filter bandpass computed from the filter coefficients. ... The computed filter has aliased power, extra IQ filtering, and two applications of the filter on the resulting real bandpass. ...
[ Сохраненная копия ]  Ссылки http://www.naic.edu/~phil/hardware/cor/compareBandpass.html -- 8.0 Кб -- 25.09.2002
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14. Comments on Individual Table Columns
... NB The next 2 columns will only be present if the parameter usecat has been set to true . ... QUALITY FLAGS Each source has an associated ``quality flag''. ... 0 1 Source lies above one or more bad pixels . ... 6 64 Source lies near to another bright source . ... For example, a source with a bad pixel and lying on or close to a read-out streak would have bits 0 and 1 set and thus have a quality flag of 3. QFLAG The quality flag for each source in each filter obtained from the input source-lists. ...
[ Сохраненная копия ]  Ссылки http://xmm.vilspa.esa.es/sas/7.1.0/doc/omsrclistcomb/node21.html -- 6.5 Кб -- 09.07.2007
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15. The AstroStat Slog NGC
... Posts tagged ?NGC? ... From arxiv/astro-ph:0708.4030v1 . Deep ACS Imaging in the Globular Cluster NGC 6397: The Cluster Color Magnitude Diagram and Luminosity Function by H.B. Richer et.al . ... ArXiv] NGC 6397 Deep ACS Imaging, Aug. ... Tags: ACS , chi-square , CMD , empirical method , globular cluster , LF , MF , NGC . Category: arXiv , Astro , CHASC , Data Processing , Imaging , Jargon , Stars | ... Entries RSS . Comments RSS . ... chasc on About . ... Entries (RSS) and Comments (RSS) . ...
[ Сохраненная копия ]  Ссылки http://hea-www.harvard.edu/AstroStat/slog/groundtruth.info/AstroStat/slog/tag/ngc/index.html -- 20.5 Кб -- 01.03.2014
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16. Orion, mighty hunter of the winter sky | Astronotes
... Stars . ... Straight away the three stars in his belt will grab your attention, followed by the glittering white star Rigel in his left foot and the bright orangish star Betelgeuse in his right shoulder (assuming Orion is standing facing us and not with his back to us). ... Orion Belt?s with the stars Alnitak, Alnilam and Mintaka. ... In short, Orion was a big, loud giant of a man and indeed a mighty hunter, he also inherited some aquatic superpowers from his father who was the sea god Neptune. ...
[ Сохраненная копия ]  Ссылки http://www.armaghplanet.com/blog/orion-mighty-hunter-of-the-winter-sky.html -- 46.8 Кб -- 09.04.2016
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17. Galaxy Gallery Page II
... They cover a period of 4 days in which the Supernova continues to rise in brightness (what astronomers call magntiude). ... First Image Taken on March 11 at 8:22 UT. Second Image Taken on March 12 at 8:52 UT. ... The supernova is the same brightness as in the previous image taken 2 hours ago . ... This image, taken 24 hours after the previous image, shows the supernova to be another 0.21mag (or about 25%) brighter. ... Hopefully the images do show that the brightness of the Supernova is changing. ...
[ Сохраненная копия ]  Ссылки http://zebu.uoregon.edu/sn.html -- 6.3 Кб -- 07.10.1996
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18. Lack of Dwarf Galaxies in the Local Volume Compared to Conventional Cosmology
... The sample of the Local Volume galaxies (distance smaller than 10 Mpc) gives a unique opportunity to study the properties of galaxies including the weakest objects: the absolute magnitude M B -10 and the virial mass M vir 10 9 M x263C;. ... Luminosity function of the Local Volume galaxies. ... The luminosity functions for galaxies are presented: red dashed line - from the 2dFGRS survey (Norberg et al. 2002); blue dash-dotted line - from the SDSS survey (Blanton et al. ...
[ Сохраненная копия ]  Ссылки http://www.sao.ru/Doc-en/SciNews/2016/Makarov/ -- 7.5 Кб -- 10.04.2016
[ Сохраненная копия ]  Ссылки http://mavr.sao.ru/Doc-en/SciNews/2016/Makarov/ -- 7.5 Кб -- 10.04.2016
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19. Besides computer simulations, what evidence do astronomers have to support the
... Gravitational wave search provides insights into galaxy evolution and mergers . ... galaxies . ... Globular cluster NGC 2808, elliptical galaxy NGC 2986, and the Sextans Dwarf . ... Besides computer simulations, what evidence do astronomers have to support the popular hypothesis that elliptical galaxies form from merging spirals? ... When a small galaxy merges with a much more massive one, astronomers call the process a minor merger and the more massive galaxy is little affected. ...
[ Сохраненная копия ]  Ссылки http://www.astronomy.com/magazine/ask-astro/2013/05/galaxy-mergers -- 63.8 Кб -- 10.04.2016
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20. THE BRIGHT SUPERNOVA 1991T IN NGC 4527; AN AMATEURS PRESPECTIVE
... The bright supernova (hereafter SN) in the galaxy NGC 4527 was first sighted by S. Knight (USA) on April 13.17UT at magnitude ~14.0v. The report of the sighting was subsequently forwarded by phone to the AAVSO. ... SN 1991T. The galaxy NGC 4527 is an Sb(s)II type galaxy with an apparent Blue magnitude of 11.32 (Shapley-Ames, 1981). ... An analysis of this event utilizing visual observations by amateurs, plus a light curve is presented.. ... THE LIGHT CURVE: . ... ISN SN 1991T web page . ...
[ Сохраненная копия ]  Ссылки http://www.sai.msu.su/mirrors/isn/snimages/sn1991t.html -- 9.2 Кб -- 05.02.2013
[ Сохраненная копия ]  Ссылки http://www.rochesterastronomy.org/SNIMAGES/sn1991t.html -- 9.3 Кб -- 10.04.2016
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