The night sky brightness, together with number of clear nights, seeing, transparency, photometric stability and humidity, are some of the most important parameters that qualify a site for front-line ground--based astronomy. ... Night sky at ESO-Paranal (Chile). ... Night sky brightness data . ... UBVRI night sky brightness at ESO-Paranal during sunspot maximum (A 2003, PDF) . ... The Dancing Sky: six years of night sky observations at Cerro Paranal (Starlight 2007 conference proceedings, PDF) . ...

Astronomy Discussion Forums . Forums: . ... How Do You Feel About Numbers? ... Post Message | ... Posted by Richard D. Stafford, Ph.D. on September 15, 2002 16:22:25 UTC . ... Wait - harvey1 - September 15, 2002 - 22:20 UTC . I don't follow you! - doctordick - September 16, 2002 - 14:59 UTC . ... www.astronomy.net . About Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... Time calculated from Fermi GBM Trigger Time = 14:12:08.67 ( Connaughton, GCN 9230 ). 1% coincident with our start zero image time. 3x3 degrees around Swift XRT position . ... SUBJECT: GRB 090424 : MASTER-Net prompt optical limit DATE: 09/04/25 20:29:42 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs E. Gorbovskoy, V. Lipunov, V.Kornilov, A.Belinski ... Our observations results: ---------------------------------------------------------------------- Fermi GRB Trigg.* ...

Astronomy Picture of the Day . The Mileage of Light . ... 28.05.2011 . ... Credit Copyright: Dennis L. Mammana ( TWAN ) Explanation: If you're driving down a dark road on a starry night, you might want to check the odometer. ... Mammana muses that in driving to countless observatories , star parties , and night sky photo shoots it has taken his 1998 vintage sport utility vehicle over 13 years to cover that distance. ... Unusual Light Pillars Over Latvia . Colorful Light Pillars . ...

Next: Inspection of results Up: *fit* - Fit Data Previous: Verbose Mode . If the number of net counts for a source is less than it is impractical to fit the data in all 34 energy bits. However, if the flux is required, then a fit must be performed first. ... Fit will then calculate the normalization of the model and xflux can be used to determine the flux and luminosity of the source from the best fit model. xs> fit rebin=yes . ...

... The conference will take place at the Independent University, 11 Bolshoi Vlassievsky pereulok, 119002 Moscow. The nearest metro stations are: Smolenskaja (Смоленская, line 3 = dark blue, not to be confused with the other station of the same name on the line 4 = light blue) and Koropotkinskaja (Кропоткинская, line 1 = red), see this map (in russian, with detailed instructions) or another map (in english). ... E-mail: yulijs (at) gmail.com . ... Email: hindry (at) math.jussieu.fr . ...

OUTDOOR LIGHTING, INSECTS & BIRDS Is light pollution killing our birds? Colin Henshaw and Graham Cliff believe that light pollution is reducing the numbers of insects on which many birds rely In 1994, the Journal of the British Astronomical Association carried a letter from one of the authors (Colin Henshaw) entitled The Environmental Effects of Light Pollution. ... Consequently, with lights often left on all night, 365 nights a year, the number of insects must be significantly reduced. ...

This document describes how number input can be given to tasks which request numbers from Hermes. ... list selection The following constants are implemented: pi 3.14159.... c speed of light (SI) h Planck (SI) k Boltzmann (SI) g gravitation (SI) s Stefan-Boltzman (SI) m mass of sun (SI) p parsec (SI) BLANK Universal undefined value The following mathematical functions are implemented: abs(x) absolute value of x sqrt(x) square root of x sin(x) sine of x asin(x) inverse sine ...

... Bad Astronomy . Misconceptions . ... Bad Astronomy : "We're light years more advanced than our competition!" ... Even the closest astronomical object, the Moon, is 400,000 kilometers away! ... A beam of light will travel 9,500,000,000,000 kilometers in one year. This distance is defined as a light year ; the distance light travels in a year. ... This is another example of Bad Astronomy; like a light year, a parsec is a unit of distance, not time (to be specific, it equals 3.26 light years) . ...

Please enter the lightcurve file name and period search parameters: . Lightcurve file: . ... Apply the Heliocentric correction and convert all dates to Terrestrial Time (TT)? ... Also, the Heliocentric correction cannot be applied to such lightcurves. ... This period search service is also available at the mirror sites: Mirror 1 , Mirror 2 , Mirror 3 , Mirror 4 . You may download the latest source code distribution and install the period search service at your own web server. ...

... Subroutine omthlcplot Recover parameters (File names, Device type, Binning factor, Plots per page, Ouput file) Read source time series FITS file : Get dataset and table. ... Recover all light curves included in the table Net source rates are recorded in an array of dimensions: number of bins * number of light curves. ... Create labelled plot pages separated into the number of panels specified by the user, in which time is graduated on X-axis (see Comments), and count rates on Y-axis (in counts/sec)....

... Deductions from the net available orbits based on preallocated Cycle 13 orbits. ... Table 3: Summary of Remaining Current Cycle Visits as of 2004.061 Current Cycle Proposal Types Currently having plan windows Current Cycle (non-DD, non-ToO) without Plan Windows: Expected Current Cycle DD to be executed: Expected Current Cycle ToO to be executed: HOPR orbits for above orbit pool (2.5%): Subtotal: Orbits 1770 69 20 140 50 2049 Table 4: Weeks available within ...

... 1.7 GSC 084 Pulkovo Obs., 0.33 15 x 15' 1.0" 7 34 0.179 0.307 Normal Asgr. 3.0 UCAC 118 Slovakia, 0.57 14 x 10' 1.7" 3 12 0.090 0.145 Modra 3.3 USNO 127 Germany, 0.19 30 x 20' 2.4" 3 15 0.151 0.087 Bornheim 0.8 GSC 168 34 200 0.282 0.315 291 USA,Kitt Peak, 1.8 390 x 30' 1.0" 1 5 0.143 0.144 Spacewatch II 4.7 USNO 300 Japan, 0.5 78 x 78' 2.3" 7 36 0.420 0.447 Bisei Center 1.3 ACT 461 Hungary, JATE 0.60 28 x 19' 1.1" 6 22 0.124 0.153 Asteroid Surv. ... Polynesia 1.0 UCAC F85 Tiki Obs., ...

The HyperNews Linux KHG Discussion Pages . Forum: The Linux Kernel Hackers' Guide . Keywords: proc . Date: Wed, 06 May 1998 08:30:39 GMT . From: ElmerFudd < elfuddo@hotmail.com > . i can't seem to get more than 240 processes running (programs seg fault and nasty stuff like that) i have been looking into it and i think it must have something to do with a limit on /proc? (i'm running 2.1.33 and libc 5.4.17) . Please email me at elfuddo@hotmail.com if you are able to shed some light on this problem, thanks .

Computing dates when an LST is at night time . Start LST (hh:mm) . End LST (hh:mm) . ... Start Date(yyyy-mm-dd) . ... Input Start LST and End LST should be given in the format hh:mm or hhmm . ... In the output table the word "night" on the first date when the LSTs fall entirely at night, and "day" on the first date when the LSTs sometimes cross into daytime. This tool computes the dates where LST is at night time using the program nighttime (written by Mike Nolan) ...

... SONG : Tryouts for the Human Race We're just a gleam in lover's eyes, steam on sweaty bodies in the night One of us might make it through, the rest will disappear like dew Pressure building, gettin' hot, give it, give it, give it all you got When that love explosion comes, my, oh my, we want to be someone CHORUS Tryouts for the human race, from Burlington to Bonn Ah, we are a quarter billion strong Tryouts for the human race, from twilight ...

ARCSAT ID NUMBER: AS07 DESCRIPTIVE TITLE: Time Domain Studies of Transients and Variable Stars PI: Guy Stringfellow OBSERVER(S): Guy Stringfellow, CU undergrads TBD UNCERTIFIED ... CU undergrads COLLABORATORS: CONTACT INFORMATION: Guy.Stringfellow@colorado.edu 303-506-3160 cell NUMBER OF WEEKS REQUESTED: 3 TIME REQUESTED: Requires Dark time and time cadence ~monthly Run 1: July 13 (alternate: ... Based on our previous ARCSAT observations, we now have an 11-tile grid covering M31. ...

... Let us first find out which way -- rise in spectral resolution with some loss in the S/N ratio or increase in the S/N ratio with a fixed spectral resolution -- is better for the purpose of reduction of equivalent width determination errors. ... N -- number of counts for 1 ? ... line equivalent width, . ... Thus if the spectral resolution is managed to be increased (i.e. to decrease )without loss in the number of counts falling at 1 ?, the equivalent width measurement error is then proportional to . ...

Canberra Times 07/09/2009 Page: 6 Times Region: Canberra Circulation: 34354 Type: Australian Capital City Daily Size: 348.32 sq.cms MTWTFS- Page 1 of 2 back Does the universe contain an infinite number of Kevin Rudds? The year 2009 is the interTo mark the occasion, the Astronomical Society of Australia recruited a small group of media-friendly astronomers to national year of astronomy. distance between the light and its point of origin. ... And besides, how could you possibly test such an idea?" ...

... The numbers of three types of compact binaries containing accreting NSs and BHs, which are most interesting from the point of view of their observational appearances, have been calculated as a function of time: i) X-ray transient source containing a NS in an eccentric orbit around a main sequence Be-star (the observed prototype: A0535+26), ii) BH The evolution of the selected types of X-ray binaries during the first 10 million years after the starburst onset is presented in Fig. ...