November 2006 Astronotes 1 Candles in the Dark Image Credit: Wikipedia.org By Colin Johnston, Science Communicator Since the mid-ninteenth century astronomers have used the principle of parallax to measure the distance to other stars. ... How then can we tell, for example, that M31, the galaxy in Andromeda, is 2.2 million light years away? It would be straight-forward to tell how far away a star was if it was exactly the same brightness as our own Sun. ...

... After the edit, recompile the kernel and recompile the Apache server then reboot. ... If you're running a really busy BSD Apache server, the following are useful things to do if the system is acting sluggish: . ... Maximum # of processes . ... This machine is a server that handles lots of traffic, # so we crank that value. options NMBCLUSTERS=4096 # mbuf clusters at 4096 # # Misc. options # options CHILD_MAX=512 # maximum number of child processes options OPEN_MAX=512 # maximum fds (breaks RPC svcs)...

The Mass Function of Dark Halos in Sup erclusters and Voids E. P. Kurbatov1 1 ,* Institute of Astronomy of the Russian Academy of Sciences A mo dification of the Press­Schechter theory allowing for presence of a background large-scale structure (LSS) ­ a sup ercluster or a void is prop osed. The LSS is accounted as the statistical constraints in form of linear functionals of the random overdensity field. ... Variance as a function of mass for different sets of constraints. ...

... FEATURES OF OBTAINED IMAGES All images obtained by the TESIS have a number of artifacts, i.e., the dark current, flat field, blurring (related to the feature of input shutters and CCD matrices of the equipment), and frame damage caused by the entry of cosmic particles. In addition, poor accuracy of the spacecraft stabilization leads to the fact that separately taken images of the Sun have a ran dom displacement and rotation relative to the CCD matrix. ... Methods of image recording of the TESIS. ...

... The Kilodegree Extremely Little Telescop e (KELT) pro ject is a wide field, small-ap erture survey for such transits, based on a theoretical optimization of all-sky transit searches (Pepp er, Gould, & DePoy 2003). It is similar to the other small-telescop e transit surveys with wide fields (Alonso et al. ... Figure 1 shows a sample image of a survey field. ... Among transit surveys, KELT has the largest field of view for which image subtraction has b een successfully employed. ... fields of view. ...

The Galaxy Disk in Cosmological Context Proceedings IAU Symposium No. ... The presence of exponential bulges and anti-truncated disks has been noticed in many lenticular galaxies. ... Among our findings in unbarred spiral galaxies, only one galaxy, NGC 5533, has a LSB outer disk (Sil'chenko et al. ... In the frame of this model, the Exponential bulges and antitruncated disks 5 inner disk must be more bright and compact than the usual large-scale stellar disks of spiral galaxies are. ...

RADIOASTROPHYSICAL DEPARTMENT • INSTITUTE OF SOLAR-TERRESTRIAL PHYSICS RAS SB . ... SSRT - Receiving systems . The SSRT has two independent receiving systems for recording solar observational data, and several ancillary receivers for checking, setting up and adjusting the instrument. The base receiving systen is a multichannel filter receiver for a simultaneous recording in 180 channels with the 500 kHz band each, adjusted at steps of about 600 kHz. ... Channel's band . ...

яЛП . PubliУ? le 12/06/2013 par Nicolas Soldati . Date : 07/06/2013 . Lieu : Fribourg, Suisse . MatУ?riel de prise de vue : Zeiss APQ 150/1200, 4x Telecentric, DayStar Filter Quantum PE 0.8У?, 0.7 Telecompressor, PGR camera . Commentaires : Bonhomme de feu . Date : 30/05/2012 . Lieu : Fribourg, Suisse . MatУ?riel de prise de vue : Zeiss APQ 150/1200, 4x Telecentric, DayStar Filter Quantum PE 0.8У?, 0.7 Telecompressor, PGR camera .

THE 75th NAME-LIST OF VARIABLE STARS. ... The 75th Name-List consists of two tables. ... the literature, taken from positional catalogues, including USNO A1.0/A2.0 and GSC, or determined by the authors); the range of variability (sometimes the column Min gives, in parentheses, the amplitude of light variation; the symbol ( means that the star , in minimum light, becomes fainter, than the magnitude indicated); and the system of magnitudes used ( P are photographic ...

... Telescope concept . ... The Submillimetron Project is dedicated to astronomical studies at the submillimeter and far infrared wavelengths using a cryogenic telescope located on the Russian segment of the International Space Station (ISS). The Astro Space Center of the Lebedev Institute of the Russian Academy of Sciences is responsible for developing the Submillimetron Project. ... Currently, the Astro Space Center is carrying out a pre-Project study under contract with the Russian Space Agency. ...

New reduction of minor planets photographic plates obtained with Pulkovo Normal Astrograph A.A. Berezhnoy Pulkovo Observatory of RAS, Saint-Petersburg, Russia Minor Planet observations at Pulkovo Periodical observations of 14 bright asteroids named Selected Minor Planets (SMP) were performed at Pulkovo since 1948 within the international framework started by works of B.V. Numerov and D. Brouwer. ... 108 133 113 74 124 67 97 88 14 84 64 5 20 19 Epochs (YYYY.MM) 1200 Mean values of total obs. ...

... The main field of my investigations is stellar spectrophotometry. As a result of scientific activity of our group spectrophotometric catalog was created including energy distribution data on 900 stars in the range 3200-7600AA and 250 stars in the range 6000-10800AA (Voloshina et al., Spectrophotometry of Bright Stars, ed. I.N.Glushneva, 1982, Moscow, Nauka, in Russian). ...

... TAIL . ... 1997 3 09.82 . ... 4.5 . ... GUR . ... Mar 9.82: bright arcs visible near nucleus (on the south, sunward side). Mar 13.63: arcs.. ... CCD ST6 + F=110mm, 1:4 lense: Dia=27', ion tail in PA 348 deg. and dust tail in PA 321 with sinchrones:some brightest are inclined in PA 328, 327 and 332 deg.. Mar. 19.61: 3 arcs in the sector near the nucleus in PA 163 up to 278 deg., brightest part in PA 237 deg., distanse between arcs approx. 30", full size of whole this structure about 2'. ...