N NGC N Созв. ... C-1 NGC 188 Cep OC Open cluster 00h 44.4m +85 20' 8.1 14 C-2 NGC 40 Cep PN Planetary nebula 00h 13.0m +72 32' 12.4 0.6 C-3 NGC 4236 Dra SG Spiral galaxy 12h 16.7m +69 28' 9.7 19 x 7 C-4 NGC 7023 Cep BN Bright nebula 21h 01.8m +68 12' -- 18 x 18 Refl. nebula C-5 IC 342 Cam SG Spiral galaxy 03h 46.8m +68 06' 9.2 18 x 17 C-6 NGC 6543 Dra PN Planetary nebula 17h 58.6m +66 38' 8.1 5.8 Cat's Eye Neb. ... C-103 NGC 2070 Dor BN Bright nebula 05h 38.7m -69 06' -- 40 x 25 Tarantula Neb. ...

. [ Go back to Comet WWW site ] . Andrew A. Martis . martis @ sai.msu.ru .

... We have made observations of the Perseus cluster with the Westerbork Telescope at 610 MHz. ... Several newly detected sources are identified with cluster galaxies. ... No evidence is found for the existence of the previously reported ~ 65'x25' cluster halo, 3C 84B. Key words: radio galaxies - clusters - tailed radio sources buoyancy The Perseus Cluster of galaxies is one of the most fascinating systems accessible to extragalactic astronomers. ...

... Meade Instruments Corporation . Telescopes ћ Binoculars ћ Microscopes . ... Asteroids can be observed, and their paths plotted in motion among the stars, through all Meade telescope models. ... Larger telescopes, including Meade DS-2000 series, LXD55 series, 8LX90 and LX200GPS, permit the observation of hundreds of variable stars throughout the sky. ... Larger telescopes such as the Meade LXD55 series, allow the observation of dozens of additional stars embedded in the nebula. ... about meade | ...

... We found that 10 metal-poor globular clusters are greately distinguished for anomalously small masses on the "destruction rate-mass" plain. As it turned out, these poor clusters, situated 15 kpc farther from the Galactic centre, are somewhat younger than the bulk of the metal-poor globulars, and have anomalously red horizontal branches. ... At the same time, deficiency of distant massive clusters is noticeable with increasing distance from the galactic centre. ...

Astronomy Discussion Forums . ... Great Night 10/24 . ... Post Message | ... Temp in the mid to low 40's, slight wind, pretty clear. ... Very good view of the Double Cluster. ... Normally the best contrast is achieved with the 32mm or 25mm ep. ... This cluster was lower to the horizon and thus now quite as clear as the Double Cluster. ... www.astronomy.net . ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

. The great Orion nebula. The great Orion nebula is the brightest nebula in the sky. It is seen by the binoculars and with the good eyesight it may be seen by naked eye - a little bit below the three stars, located in one line, forming the Orion belt. The distance to this nebula is about 1000 light years. Back .

... LMC Project Outline . NGC 1818 Initial Results . ... The Large Magellanic Cloud (LMC) is uniquely suitable for the study of massive star clusters at all stages of evolution. By combining HST observations of these clusters with N-body models we hope to understand the origin and evolution of rich star clusters in our own Galaxy, in the LMC, and beyond. ... We aim to combine our HST observations with N-body models to understand the formation and evolution of globular clusters. ...

... In 1930, Trumpler noticed that linear diameters (LD) of open clusters increase with distance (D) from the Sun. ... Since that time, the interstellar absorption has become one of the best studied factor in astrophysics, and we may hope that current OCL distance scales are free from this LD-D correlation. To verify if this is the case we have chosen several modern OCL distance scales and test them with the same clusters and the same angular diameters that Trumpler had used back in 1930. ...

MAIN PAGE . ... Nova Cygni August 1975! ... 1975/76: Comet West! ... Dr. Richard West (4th from left) & AAL members visiting SES Betzdorf on occasion of our club's 25th anniversary - October 1996 . Comet West Information . ... It was the brightest comet visible from Earth since Comet West in 1976. ... 1997: Comet Hale-Bopp! ... Thus Comet Hale-Bopp never got closer to Earth than Earth gets to the Sun. ... Comet Hale-Bopp JPL Page . ... 1999: Total solar eclipse over Luxembourg! ...

... Bad Astronomy . ... Bitesize Astronomy . ... We've come a long way from cluster to cluster! ... Some of these objects turned out to be star clusters of various types, and other were true nebulae, or clouds of glowing gas. ... Therefore, by their reasoning, these spiral nebulae must be part of our own Milky Way. ... An established and respected astronomer, Heber Curtis, defended the idea that the nebulae were ``island universes'', clusters of stars and gas in their own right like the Milky Way. ...

... Meta Index / Home Page / Source Flagging Algorithms Any source either having a raw count-rate >= 80, or with quality flag bit 4 set (mod-8 pattern) is checked for "close" neighbours, which may be flagged. ... Check each source in the vicinity of the bright source . ... Compute the maximum distance for flagging the source from maxRad = max(exclusionradius, min(70.0, 35.0 * countTable(i) // 80.0) ) If the flagging is done by omdetect, the exclusion radius is determined from the algorithm at the end . ...

Next: Targeted searches Up: Searches and surveys Previous: Large area surveys . Crab pulsar would not have been detected by systematic surveys until after 1982! B1937+21 (P=1.6ms) discovered 1982 [ 2 ] . For large areas: data rate greater than hardware limits at the time. ... Globular cluster targeted searches ( msps) . In 1991 only 4 Galactic msps known . Large area searches become feasible . In 1996 now 35 Galactic msps known . ... Thu Dec 19 15:15:11 GMT 1996 ...

... Copyrightї1997 Bob Yen (byen@ix.netcom.com) (http://www.comet-track.com/hb/hb.html) . ... Information on Comet Hale-Bopp for the Non-Astronomer Hale-Bopp rotates about twice a day (3/14/97) . ... The Comet Observation Home Page was been selected to receive the Griffith Observatory Star Award for the week of February 2 - 8, 1997 for excellence in promoting astronomy to the public through the World Wide Web. ... Typically, about 1,000 individual users/computers access this page every day. ...

... Dept. for Physics of Stars&Galaxies . ... Using a database view Sloan Digital Sky Survey (SDSS), containing almost a million spectra created 15,000 sample galaxies with active star formation, which is used for various studies and physical state of evolution of galaxies. ... Star clusters of the Galaxy . The project MWSC (Milky Way Star Clusters) directory using 2MASS, which includes nearly 500 million vision to the limit Ks = 15.3, analyzed more than 4,000 cluster-like objects in the galaxy. ...

. Please standby and you will be automatically connected to the new location of the unframed Supernova page. Or, click on the link above. If you have questions or problems, please email me at David Bishop dbishop@vhdl.org . Last modified: Mon Aug 27 12:40:15 EDT 2001

Participant 5 (P5) ================== Dr. V.P. Tishkovets - Astronomical Observatory, Kharkov University, UA Dr. N.N. Kiselev - Astronomical Observatory, Kharkov University, UA P.V. Litvinov - 26 years old; Astronomical Observatory, Kharkov University, UA S.A. Beletsky - 28 years old; Astronomical Observatory, Kharkov University, UA The head of the team, Dr. Tishkovets, and Mr. Litvinov made many investigations of light scattering by clusters of particles - analogues of interplanetary dust grains. ...

M 13 2° 16h41m41s +36°27'39" N W Globular cluster Open cluster Asterism Galaxy 6207 M 13 3 4 5 6 7 8 9 10 11 12 13 Diffuse nebula Planetary nebula Supernova remnant Part of external galaxy

... Listed below are questions submitted by users of "The Great Magnet, the Earth" and the answers given to them. ... In "The Exploration of the Earth's magnetosphere" on the magnetic environment of the Earth in space (a few Q duplicated here) . ... 11) Magnetic Shielding . ... 51) Can electricity be generated from the Earth's magnetic field? ... 9) Measuring Earth's magnetic field . ... 6) Reversals of the Earth's field (4 queries) . ... 42) Could generated electricity affect Earth's magnetic field? ...

... The ROSAT Bright Survey: II. Catalogue of all high-galactic latitude RASS sources with PSPC countrate CR > 0.2 s -1 . ... 1S We present a summary of an identification program of the more than 2000 X-ray sources detected during the ROSAT All-Sky Survey (Voges et al. 1999) at high galactic latitude, |b| > 30degr , with countrate above 0.2 s -1 . This program, termed the ROSAT Bright Survey RBS, is to more than 99.5% complete. ...