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. ...

... Spherical aberration, coma, and astigmatism are also easily observed using the star test. ... Off-axis images are complex. ... Fig. ... Diffraction by a circular aperture as a function of defocus for no aberration Airy Disk 1 wave defocus Less than 1 wave defocus Fig. ... Diffraction by a circular aperture as a function of defocus for third-order spherical aberration Paraxial Focus Small distance inside paraxial focus Moderate distance from marginal focus Immediate neighborhood of marginal focus Fig...

... Помощь . ... Научная панорама ? arxiv:0802.1920 Открытие аналогов Юпитера и Сатурна с помощью гравитационного м . ... arxiv:0802.1920 Открытие аналогов Юпитера и Сатурна с помощью гравитационного микролинзирования (Discovery of a Jupiter/Saturn Analog with Gravitational Microlensing) . ... Массы составляют 0.71 и 0.27 массы Юпитера. Расстояния от звезды 2.3 и 4.6 а.е. Т.о., это весьма похоже на Юпитер и Сатурн в Солнечной системе. ... и об этом открытии: . ...

The Russian Parliament will soon consider a bill that would restructure the Russian space program, 35 years after the launch оf Sputnik. ... But the legislation's most striking and controversial feature is a provision that would ban testing and deployment оf space weapons ? including anti-satellite weapons and space-based missile interceptors. ... A draft bill was written by a group of experts within the Moscow Space Club, several of whom now work on space issues with the Russian Parliament. ...

... Moon Phase below . ... ARTICLE: Why the moon always shows us the same face . ... Before you continue reading, you should know that this was not always the case, i.e. the Moon once was rotating with respect to the Earth, so that on every night a terrestrial observer (if there was one, because this was long, long before mankind appeared on our planet, and even before any major animals had appeared) saw another face of the Moon. ... Figure 1 (not to scale) shows how we can imagine the system Earth-Moon...

Stellarium 0.12.3 . ... Classes . ... FileљStructure . ... Atmosphere Class Reference . ... More... #include < Atmosphere.hpp > . voidљ . computeColor (double JD, Vec3d _sunPos, Vec3d moonPos, float moonPhase, StelCore *core, float eclipseFac, float latitude=45.f, float altitude=200.f, float temperature=15.f, float relativeHumidity=40.f) . ... Get fade in/out duration in seconds. ... getFlagShow () const . ... getFadeIntensity (void) const . ... Definition at line 40 of file Atmosphere.hpp . ...

... I'd also like to wish you Kung Hee Fat Choy, which is Happy New Year's in Chinese although Chinese New Year does not begin until February 4th or 5th. ... Here on Oahu, it is legal to burn firecrackers but not aerial fireworks. Many aerials were brought in illegally and although the police confiscated and arrested a few people, there were thousands of aerials being used. ... Here in Kailua, many dead birds were found along Kailua Beach and this is . being blamed on the fireworks. ...

... VaST is a software tool for finding variable objects on a series of astronomical images. ... VaST performs object detection and aperture photometry using SExtractor on each image, cross-matches lists of detected stars, performs magnitude calibration with respect to the first (reference) image and constructs a lightcurve for each object. ... VaST FITS image viewer ./pgfv . ... Part I" PZP, vol. ... K. V. Sokolovsky, S. A. Korotkiy; "New Variable Stars Discovered by the NMW Survey" PZP, vol. ...