Next: The Formation and Evolution Up: NICMOS Science Previous: NICMOS Observes the Galactic . ... We have taken diffraction-limited ( 0.15") near-infrared F160W (henceforth H-band, for convenience) images with NICMOS on HST of the center of the R136 cluster (age 3.5 Myr) in the core of the 30 Dor giant HII region in the Large Magellanic Cloud. ... 1996, ApJ 466, 274) can sample only M >2M , while previous V and I band HST images with WFPC2 (Hunter et al. ...

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... Bad Astronomy . ... Bitesize Astronomy . ... Here's a question for you: if you were to place the Moon randomly anywhere in the sky, on average, how many stars would it cover up? ... We found that the sky is about 40,000 square degrees . ... The area of a circle is pi * radius^2, so the Moon's area is pi * (1/4)^2=0.2 square degrees. So the number of stars in an area the size of the Moon is 0.15 stars/square degree * 0.2 square degrees=0.03 stars per Moon area. ... 2008 Phil Plait. ...

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... Tonight's Sky . ... News . Observing . ... Dark energy update . ... What's more, because of dark energy's destructive effects, a universe that contained much more dark energy than what we observe would almost certainly by unsuitable for the evolution of life. ... Dark energy and the accelerating universe . ... Only registered members of Astronomy.com are allowed to comment on this article. ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

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... In this activity, students will observe that the faintest stars which they can see in the sky are affected by many things: the adaptation of their eyes to the dark, the presence of clouds or haze, the time of year, and the presence of light pollution. General Information . ... After completing this activity, students should have a better understanding of the practical processes for dealing with the light pollution problem and with other environmental and societal issues. << previous page | ...

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... AstroImageJ (AIJ) .. ... Reads and writes FITS images with standard headers . ... Provides a time and coordinate converter tool with capability to update/enhance FITS header content (AIRMASS, BJD, etc.) ... Creates color images and with native ImageJ processing power . ... AstroImageJ_Updater . Update operation now updates AIJ version number in Info.plist CFBundleVersion and CFBundleShortVersionString (MacOSX only) . ... AstroImageJ is ImageJ with astronomy plugins and macros installed. ...

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• Moore Observatory Current Weather

The Astronomy Net . Articles | ... Forums . ... Planets | ... The list below is a live snapshot of where the planets and moon are located right now. ... The links in the left hand column take you to a mirror of the excellent NinePlanets web site where you can read about each planet and much much more. The latest news includes the fact that Pluto is no longer classified as a planet. ... Pluto is now classified as a 'dwarf planet' which includes Ceres and soon to be many others. ... 100 . ...

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... Python IDL download calc_kcor.pro . ... At present, SDSS (ugriz), UKIRT WFCAM (YJHK), ; Johnson-Cousins (UBVRcIc), and 2MASS (J2H2Ks2) ; are supported ; redshift - redfshift of a galaxy (floating point) ; colour_name - colour identification (string) ; colour _value - value of colour in magnitudes (floating point) ; should be in the AB mags for ugrizYJHK ; and in Vega mags for Johnson-Cousins/2MASS colours ; ; RETURN VALUE: K-correction in the specified filter for given redshift ; and ...

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• K-corrections calculator (version 2010): download IDL, Python and C code

... Four types of galaxy environments are considered: clusters, centers of groups, other places in groups, and the field. ... In order to check whether the mean ages of the stellar populations depend on environment density monotonically, as the hierarchical par­ adigm predicts, in this work I consider four types of environment separately: the cluster galaxies, the brightest (central ) galaxies of groups, the second­ranked group members, and the field galaxies. ... Group center SB(rs)0# 204 637 1996 Oct ...

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• http://sn.sai.msu.ru/~sil/preprints/mnr21990.pdf
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... Planets . ... Exoplanets . ... Image 1-Artists impression of an exoplanet in orbit around host star. ... Supposedly the closest exoplanet to us is also located in this system around one of the other stars, Alpha Centauri B. €аThis hot, Earth-sized, rocky exoplanet, Alpha Centauri Bb was discovered by astronomers in Geneva last year. ... The exoplanet, 55 Cancri e has almost 8 times the mass of the Earth with a diameter twice the size and is thought to be a carbon planet. ... Exoplanets Glossary | ...

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• The January 2016 Night Sky | Astronotes

... Home Articles Best Celestial Events of 2006 . ... Clear Sky Chart . ... Beyond New York City . ... Best Celestial Events of 2006 . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . Observing Resources for Amateur Astronomers - Part 2: Intermediate Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... Amateur Astronomers Medal . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

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... The spectrum of the brightest star, our Sun, shows several dark gaps perpendicular to the flow of it’s colours (figure 1). These so called spectral absorption lines where discovered in 1802 by the English scientist William Wollaston. ... Some stars as Pollux show a spectrum similar to that of our sun with strong Ca II and Fe II lines, others as Sirius or Vega show strong absorption lines of hydrogen, others, as Mira show very complicated spectra due to molecular absorption lines (see figure 5). ...

192. http://site2010.sai.msu.ru/static/doc/GHerriot_site2010.ppt.pdf

193. The VSOP 5 GHz AGN Survey

194. Кавказ, август 2010