Eyepieces Forum Message . Forums: . ... Re:Suggestions For Light Pollution Filters Wanted . ... Why worry about light pollution right now, why not just go out and use the telescope, sure in time a light pollution filter might help but why spend more right away, go see what you can see and enjoy the views. ... my astronomy a.t.m. site . ... www.astronomy.net . ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

A computer controlled low light photometer for nightglow observations. Hardware units of portable photometer for low light measurements, especially night glow emission is described. ... Interface card contain three channels of 24 bit counter, 4 channels of 12 bit ADC and the buffer bus for the controlled motors of the altazimuthal fork mounting and filters wheel, the position encoders. ... Where N( ) is output signal photometer generated input light flux F( l ) . ... PMT # . 599 . ...

... In this composite cityscape, dawn's first colors backdrop the lights along Brisbane's skyline at the southeastern corner of Queensland, Australia, planet Earth. ... Noctilucent Clouds over London . ... This scene from the early morning hours of July 3 looks out across the River Thames from the Westminster Bridge. ... A relatively rare phenomenon known as iridescent clouds can show unusual colors vividly or a whole spectrum of colors simultaneously. ... J1502 1115: A Triple Black Hole Galaxy . ...

... Tonight's Sky . ... Observing . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... How do light pollution filters work? Do they actually help? ... Light pollution reduction (LPR) filters work because many outdoor lighting sources do not shine evenly across the visible spectrum. ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

... New offset/filter box. A new filter/box is available. ... It is lighter, smaller and sturdier than the filter/clock and offset boxes used till now. ... The offset is stabilized to a few parts in a million. ... Notice that only positions 0-3 are meaningful, while values of 4 and above will leave the signal unfiltered. The box has one input BNC, and two output BNC: one outputs the signal with the same polarity as the input, the other reverses the signal (remember that FIRPO has negative output). ...

... A tutorial on multispectral imaging of paintings using the Mona Lisa as a case study . ... Conclusions: In this article, we have presented a tutorial description of the multispectral acquisition of images from a signal processing point of view. ... I wonder if there?s literature in astronomy matching this tutorial from which we may expand and improve current astronomical photometry processes by adopting strategies developed by more populated signal/image processing engineers and statisticians. ...

Astronotes Armagh Planetarium's Stellar Blog! ... Stars . ... Space Flight . ... Some 13.7 billion years ago, a mere millionth of a second after the Big Bang, the first hydrogen and helium nuclei condensed out of a hot, dense soup of quarks and gluons. ... In the very last few kilometres some of the light was scattered by a myriad of water droplets (containing hydrogen nuclei which had existed almost since the Big Bang) slowly descending through the air following a rainshower. ...

Not on-site at APO, but can be obtained on loan--contact Jeff Morgan at UWash, morgan/astro.washington.edu . CENTER( ) PASSBAND( ) NEBULAR LINE (OR CONTINUUM) . 4861 60 Hbeta 5007 60 [O III] 6301 10 [O I] -- [S III]6312A line is supressed 6563 10 Halpha -- [N II]6584 and 6583 lines are suppressed 6583 10 [N II] -- Halpha line is suppressed 6728 80 [S II]6717+6731 4686 60 He II 4760 100 blue cont or Fe II 8290 195 red cont. See also the Hodge filter set below. ... APO Filters Homepage ...

... Following the Observatory's initiative in 2002, drawing attention locally to the issue of light pollution and the problems it produces both for astronomy and awareness of the night sky, and for saving energy and improving the natural environment, Mark Bailey made a presentation on light pollution, on 7 May 2003, to the Armagh City and District Council Environment, Health and Recreation Committee. This focused specifically on the growing problem of light pollution in the City of Armagh. ...

... Sky temp varied -20 to -28C (occasionally more +ve ie -10C) griz filterwheel Camera temp -10C M22 === m22_00017.fits TARGET = M22 EXPTIME = 100.0 FILTER = i_(700-825) DATE-OBS = 2015-10-08T10:05:33.615 m22_00018.fits TARGET = M22 EXPTIME = 100.0 FILTER = g_(400-530) DATE-OBS = 2015-10-08T10:09:42.299 m22_00019.fits TARGET = M22 EXPTIME = 100.0 FILTER = r_(530-700) DATE-OBS = 2015-10-08T10:13:16.892 ...

... Previous: Background Fluctuation Analysis from the Multiscale Entropy . ... A new measure of information is defined which is based on noise modeling and incorporates resolution scale. Properties of this measure are discussed. ... Additionally it allows for image noise modeling, and subsequent noise removal. ... Hence information- and entropy-based processing technologies will be necessary for the effective design and implementation of large, future generation, image databases. ...

... Team . ... GRB mini-workshop 2006 . ... Our study of GRB fields in optical range efforts to shed light on the progenitor problem and it is naturally splitting into two directions. The first one is study of GRB OT via follow-up observations, while the second way is investigation of GRB host galaxies. ... The first stage consists in observational data acquision, the second one yields estimates of GRB OT characteristics and its host galaxy parameters. ... Do GRB hosts differ from field galaxies? ...

. elstream.ru: онлайн видеотрансляции с Эльбруса . GAMIT . Tags: видео . This entry was posted on Saturday, January 28th, 2012 at 10:12 am and is filed under Uncategorized . You can follow any responses to this entry through the RSS 2.0 feed. Responses are currently closed, but you can trackback from your own site. Comments are closed. Лаборатория лазерной интерферометрии is proudly powered by WordPress . Entries (RSS) and Comments (RSS) .

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. ...

ALBUM: BOY @SONG: I Will Follow I was on the outside, when you said You said you needed me. ... If you walkaway, walkaway I walkaway, walkaway - I will follow. ... SONG: Twilight I look into his eyes, there are closed But I see something. ... My body grows and grows, It fightens me you know. ... SONG: Out of Control Monday morning, it's so boring. ... I had a feeling it was out of control. ... SONG: Another Time, Another Place Bright morning lights Wipe the sleep from another day's eyes. ...

Stellarium 0.12.3 . ... FileљStructure . ... StelLight Struct Reference . Basic light source. More... #include < StelLight.hpp > . ... operator== (const StelLight &rhs) const . Is this light identical to another light? ... Position of the light. ... ambient . Ambient light color. ... Definition at line 32 of file StelLight.hpp . ... Vec4f StelLight::ambient . ... The documentation for this struct was generated from the following file: . core/renderer/ StelLight.hpp . ...

Measurement of Sky Brightness at the Iranian National Observatory Davoud Afshari1 and Sadollah Nasiri1,2 1Physics Department, Zanjan University, Zanjan 45195-313, Iran; Institute for Advanced studies in Basic Science (IASBS), Zanjan 45195-1159, Iran; Measurement of light pollution 2 Introduction Among 34 candidate sites at the central part of the country, 5 sites namely Garkesh (in Kashan ), Kolahbarfi(in Kashan ), Deynava (in ... One of these is light pollution. ...

... This program was created for correlating chosen regions in the series of fts images. ... Chosen regions' . ... In this section the program counts the integral for each region of the grid for each image. ... As a matter of fact, the integral is total brightness of the region and it is counted by 'int_tabulated' IDL function. ... In addition, the program will show the count of the regions which correlate with the corresponding region (the brighter region means the bigger count) and its contour. ...

The following page provides access to several SVM codes developed by us. ... Several our codes realizing some other exact and approximate methods are also available. The codes are provided by rather small (sorry) comments and test run results. ... Another page contains links to other collections of light scattering software (under construction). Our overview of the ranges of applicability of different codes is under preparation. ... Created by V.I. Last modified: 10/05/03, V.I. ...

... Sternberg Astronomical Institute, Moscow State University, Moscow Union "Optic" . ... Ural State University, Kourovka . ... Irkutsk State University . ... The 2 first images in different polarizatios (Eeast-telescope and West-telescope) . ... West Time GRB Mag Error (hour) 1.02097639 17.93 0.22 1.07643278 17.43 0.09 1.13188834 17.78 0.14 1.18734417 18.03 0.19 1.24280056 17.87 0.15 1.29825584 17.58 0.10 1.35371584 17.94 0.12 . ... GCN 10076) . ... GCN 10048) by internet 3422 s after the GRB time. ...