Korotangi (The Dove)
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Mathématiques Et Espace
Atelier disciplinaire AD 5 Mathématiques et Espace Anne-Cécile DHERS, Education Nationale (mathématiques) Peggy THILLET, Education Nationale (mathématiques) Yann BARSAMIAN, Education Nationale (mathématiques) Olivier BONNETON, Sciences - U (mathématiques) Cahier d'activités Activité 1 : L'HORIZON TERRESTRE ET SPATIAL Activité 2 : DENOMBREMENT D'ETOILES DANS LE CIEL ET L'UNIVERS Activité 3 : D'HIPPARCOS A BENFORD Activité 4 : OBSERVATION STATISTIQUE DES CRATERES LUNAIRES Activité 5 : DIAMETRE DES CRATERES D'IMPACT Activité 6 : LOI DE TITIUS-BODE Activité 7 : MODELISER UNE CONSTELLATION EN 3D Crédits photo : NASA / CNES L'HORIZON TERRESTRE ET SPATIAL (3 ème / 2 nde ) __________________________________________________ OBJECTIF : Détermination de la ligne d'horizon à une altitude donnée. COMPETENCES : ● Utilisation du théorème de Pythagore ● Utilisation de Google Earth pour évaluer des distances à vol d'oiseau ● Recherche personnelle de données REALISATION : Il s'agit ici de mettre en application le théorème de Pythagore mais avec une vision terrestre dans un premier temps suite à un questionnement de l'élève puis dans un second temps de réutiliser la même démarche dans le cadre spatial de la visibilité d'un satellite. Fiche élève ____________________________________________________________________________ 1. Victor Hugo a écrit dans Les Châtiments : "Les horizons aux horizons succèdent […] : on avance toujours, on n’arrive jamais ". Face à la mer, vous voyez l'horizon à perte de vue. Mais "est-ce loin, l'horizon ?". D'après toi, jusqu'à quelle distance peux-tu voir si le temps est clair ? Réponse 1 : " Sans instrument, je peux voir jusqu'à .................. km " Réponse 2 : " Avec une paire de jumelles, je peux voir jusqu'à ............... km " 2. Nous allons maintenant calculer à l'aide du théorème de Pythagore la ligne d'horizon pour une hauteur H donnée. -
Insidethisissue
Publications and Products of April / avril 2005 Volume/volume 99 Number/numéro 2 [711] The Royal Astronomical Society of Canada Observer’s Calendar — 2005 The award-winning RASC Observer's Calendar is your annual guide Created by the Royal Astronomical Society of Canada and richly illustrated by photographs from leading amateur astronomers, the calendar pages are packed with detailed information including major lunar and planetary conjunctions, The Journal of the Royal Astronomical Society of Canada Le Journal de la Société royale d’astronomie du Canada meteor showers, eclipses, lunar phases, and daily Moonrise and Moonset times. Canadian and US holidays are highlighted. Perfect for home, office, or observatory. Individual Order Prices: $16.95 Cdn/ $13.95 US RASC members receive a $3.00 discount Shipping and handling not included. The Beginner’s Observing Guide Extensively revised and now in its fifth edition, The Beginner’s Observing Guide is for a variety of observers, from the beginner with no experience to the intermediate who would appreciate the clear, helpful guidance here available on an expanded variety of topics: constellations, bright stars, the motions of the heavens, lunar features, the aurora, and the zodiacal light. New sections include: lunar and planetary data through 2010, variable-star observing, telescope information, beginning astrophotography, a non-technical glossary of astronomical terms, and directions for building a properly scaled model of the solar system. Written by astronomy author and educator, Leo Enright; 200 pages, 6 colour star maps, 16 photographs, otabinding. Price: $19.95 plus shipping & handling. Skyways: Astronomy Handbook for Teachers Teaching Astronomy? Skyways Makes it Easy! Written by a Canadian for Canadian teachers and astronomy educators, Skyways is Canadian curriculum-specific; pre-tested by Canadian teachers; hands-on; interactive; geared for upper elementary, middle school, and junior-high grades; fun and easy to use; cost-effective. -
Durham E-Theses
Durham E-Theses First visibility of the lunar crescent and other problems in historical astronomy. Fatoohi, Louay J. How to cite: Fatoohi, Louay J. (1998) First visibility of the lunar crescent and other problems in historical astronomy., Durham theses, Durham University. Available at Durham E-Theses Online: http://etheses.dur.ac.uk/996/ Use policy The full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that: • a full bibliographic reference is made to the original source • a link is made to the metadata record in Durham E-Theses • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders. Please consult the full Durham E-Theses policy for further details. Academic Support Oce, Durham University, University Oce, Old Elvet, Durham DH1 3HP e-mail: [email protected] Tel: +44 0191 334 6107 http://etheses.dur.ac.uk me91 In the name of Allah, the Gracious, the Merciful >° 9 43'' 0' eji e' e e> igo4 U61 J CO J: lic 6..ý v Lo ý , ý.,, "ý J ýs ýºý. ur ý,r11 Lýi is' ý9r ZU LZJE rju No disaster can befall on the earth or in your souls but it is in a book before We bring it into being; that is easy for Allah. In order that you may not grieve for what has escaped you, nor be exultant at what He has given you; and Allah does not love any prideful boaster. -
Sky Highlights for 2021
JANUARY 2021 OBSERVING Celestial Calendar by Bob King Sky Highlights for 2021 Courtesy of Sky & Telescope Sky Highlights for 2021 A full year of observing enjoyment awaits. F or our January Celestial Calendar installment, we’ve decided to pres- The limb of the eclipsed ent a “sneak-peek” selection of some of the most interesting celestial Moon pokes out from highlights for 2021. (Each event will be described in greater detail in upcoming issues.) the umbra in this photo The coming year has its share of excitement, with several fi ne eclipses, captured during the the return of a few modestly bright periodic comets, and the usual April 15, 2014, total assortment of meteor showers and eye-catching conjunctions. lunar eclipse. This view January 3: The Quadrantid meteor shower peaks around 6:30 a.m. PST is similar to how the (14:30 UT). The timing of the peak means the display favors skywatchers Moon will appear at on the West Coast and in Alaska. Unfortunately, light from the waning gibbous Moon in Leo will blot out many of the fainter meteors. maximum eclipse during March 4: Vesta, the brightest and second-most massive asteroid, reaches November’s partial lunar opposition 1¼° northeast of 3.3-magnitude Theta Leonis, in the tail of eclipse. Leo. At magnitude 6.0, Vesta is bright enough to be glimpsed by keen- eyed observers without optical aid from a dark sky. Binoculars will make the asteroid an easy catch. KING BOB Page 1 March 5: Mercury and Jupiter are though many other locations will be just 21′ apart, low in the east-southeast able to see at least part of the event. -
The Skyscraper 2009 04.Indd
A Better Galaxy Guide: Early Spring M67: One of the most ancient open clusters known and Craig Cortis is a great novelty in this regard. Located 1.7° due W of mag NGC 2419: 3.25° SE of mag 6.2 66 Aurigae. Hard to find 4.3 Alpha Cancri. and see; at E end of short row of two mag 7.5 stars. Highly NGC 2775: Located 3.7° ENE of mag 3.1 Zeta Hydrae. significant and worth the effort —may be approximately (Look for “Head of Hydra” first.) 300,000 light years distant and qualify as an extragalactic NGC 2903: Easily found at 1.5° due S of mag 4.3 Lambda cluster. Named the Intergalactic Wanderer. Leonis. NGC 2683: Marks NW “crook” of coathanger-type triangle M95: One of three bright galaxies forming a compact with easy double star mag 4.2 Iota Cancri (which is SSW by triangle, along with M96 and M105. All three can be seen 4.8°) and mag 3.1 Alpha Lyncis (at 6° to the ENE). together in a low power, wide field view. M105 is at the NE tip of triangle, midway between stars 52 and 53 Leonis, mag Object Type R.A. Dec. Mag. Size 5.5 and 5.3 respectively —M95 is at W tip. Lynx NGC 3521: Located 0.5° due E of mag 6.0 62 Leonis. M65: One of a pair of bright galaxies that can be seen in NGC 2419 GC 07h 38.1m +38° 53’ 10.3 4.2’ a wide field view along with M66, which lies just E. -
Apparent and Absolute Magnitudes of Stars: a Simple Formula
Available online at www.worldscientificnews.com WSN 96 (2018) 120-133 EISSN 2392-2192 Apparent and Absolute Magnitudes of Stars: A Simple Formula Dulli Chandra Agrawal Department of Farm Engineering, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi - 221005, India E-mail address: [email protected] ABSTRACT An empirical formula for estimating the apparent and absolute magnitudes of stars in terms of the parameters radius, distance and temperature is proposed for the first time for the benefit of the students. This reproduces successfully not only the magnitudes of solo stars having spherical shape and uniform photosphere temperature but the corresponding Hertzsprung-Russell plot demonstrates the main sequence, giants, super-giants and white dwarf classification also. Keywords: Stars, apparent magnitude, absolute magnitude, empirical formula, Hertzsprung-Russell diagram 1. INTRODUCTION The visible brightness of a star is expressed in terms of its apparent magnitude [1] as well as absolute magnitude [2]; the absolute magnitude is in fact the apparent magnitude while it is observed from a distance of . The apparent magnitude of a celestial object having flux in the visible band is expressed as [1, 3, 4] ( ) (1) ( Received 14 March 2018; Accepted 31 March 2018; Date of Publication 01 April 2018 ) World Scientific News 96 (2018) 120-133 Here is the reference luminous flux per unit area in the same band such as that of star Vega having apparent magnitude almost zero. Here the flux is the magnitude of starlight the Earth intercepts in a direction normal to the incidence over an area of one square meter. The condition that the Earth intercepts in the direction normal to the incidence is normally fulfilled for stars which are far away from the Earth. -
The SONG Prototype: Efficiency of a Robotic Telescope
To appear in “RevMexAA (Serie de Conferencias), 00, 14 (2015)” RevMexAA(SC) THE SONG PROTOTYPE: EFFICIENCY OF A ROBOTIC TELESCOPE M. F. Andersen,1 F. Grundahl,1 A. H. Beck,1 and P. Pall´e2 RESUMEN El telescopio prototipo del Grupo de la Red de Observaciones Estelares (SONG) ha operado en modo cient`ıfico desde marzo de 2014. El primer a˜no de observaciones se ha dedicado por completo al espectr`ografo. Varios objetos de inter`es astros`ısmico se han observado para verificaci`on cient`ıfica y t`ecnica. Algunas estrellas subgi- gantes brillantes y una gigante roja fueron elegidas para prueba ya que las oscilaciones en estas estrellas tienen grandes amplitudes y los periodos son lo suficientemente largos para ser detectados. Estos objetos ser`an usados para evaluar los instrumentos ya que las observaciones a largo plazo de los objetos de estudio podr`ıan presentar algunos problemas. En este art`ıculo describimos como opera el primero de los telescopios de la Red SONG para ilustrar la eficiencia y las capacidades de un telescopio robtico. ABSTRACT The Stellar Observations Network Group prototype telescope at the Teide Observatory has been operating in scientific mode since March 2014. The first year of observations has entirely been carried out using the high resolution echelle spectrograph. Several asteroseismic targets were selected for scientific and technical verification. A few bright subgiants and one red giant were chosen since the oscillations in these stars have large amplitudes and the periods long enough to easily be detected. These targets would also be used for evaluation of the instruments since long term observations of single targets would reveal potential problems. -
Science Behind the Art Andrea Ojeda Course: Earth Science 101
Science behind the Art Andrea Ojeda Course: Earth Science 101 Instructor: Mr. Bruce Sherman Assignment: Comparative Essay Is there a relation between science and art? The two worlds are so far apart, and yet, can one exist without the other? Although many broad topics in science and art seem to be interrelated, research and history proves that the two go hand-in-hand on a more specific basis. The genius of artists such as Brunelleschi and DaVinci can be compared to scientists like Galileo and Einstein. All four men seemed to be ahead of the curve in thought and creativity. Filippo Brunelleschi “used systems of proportion that were based on the sixteenth century writings of mathematician Pythagoras” (Hartt 167). In the same manner, the scientist Galileo unlocked many of the secrets of astronomy and natural motion. While Leonardo DaVinci painted the famed Mona Lisa, he also made discoveries in meteorology, learned the effect of the moon on the tides, and foreshadowed modern conceptions of continent formation. Although these comparisons are quite vague, there are more meticulous comparisons of art and science. Meteorology and astronomy play an epic role in the natural works of artist Charles E. Burchfield and the effects of the climate on artist Aert van der Neer during the Maunder Minimum. Many artists have used the night sky and its stars to enhance the feeling of their compositions. Van Gogh used radiant swirls to portray the light and feeling the stars conveyed in his Starry Night. Nonetheless, being that these celestial objects are so tiny and seemingly insignificant to the finished piece, most artists do not choose to emulate in depth the actual stars and their real location in the sky. -
FIXED STARS a SOLAR WRITER REPORT for Churchill Winston WRITTEN by DIANA K ROSENBERG Page 2
FIXED STARS A SOLAR WRITER REPORT for Churchill Winston WRITTEN BY DIANA K ROSENBERG Page 2 Prepared by Cafe Astrology cafeastrology.com Page 23 Churchill Winston Natal Chart Nov 30 1874 1:30 am GMT +0:00 Blenhein Castle 51°N48' 001°W22' 29°‚ 53' Tropical ƒ Placidus 02' 23° „ Ý 06° 46' Á ¿ 21° 15° Ý 06' „ 25' 23° 13' Œ À ¶29° Œ 28° … „ Ü É Ü 06° 36' 26' 25° 43' Œ 51'Ü áá Œ 29° ’ 29° “ àà … ‘ à ‹ – 55' á á 55' á †32' 16° 34' ¼ † 23° 51'Œ 23° ½ † 06' 25° “ ’ † Ê ’ ‹ 43' 35' 35' 06° ‡ Š 17° 43' Œ 09° º ˆ 01' 01' 07° ˆ ‰ ¾ 23° 22° 08° 02' ‡ ¸ Š 46' » Ï 06° 29°ˆ 53' ‰ Page 234 Astrological Summary Chart Point Positions: Churchill Winston Planet Sign Position House Comment The Moon Leo 29°Le36' 11th The Sun Sagittarius 7°Sg43' 3rd Mercury Scorpio 17°Sc35' 2nd Venus Sagittarius 22°Sg01' 3rd Mars Libra 16°Li32' 1st Jupiter Libra 23°Li34' 1st Saturn Aquarius 9°Aq35' 5th Uranus Leo 15°Le13' 11th Neptune Aries 28°Ar26' 8th Pluto Taurus 21°Ta25' 8th The North Node Aries 25°Ar51' 8th The South Node Libra 25°Li51' 2nd The Ascendant Virgo 29°Vi55' 1st The Midheaven Gemini 29°Ge53' 10th The Part of Fortune Capricorn 8°Cp01' 4th Chart Point Aspects Planet Aspect Planet Orb App/Sep The Moon Semisquare Mars 1°56' Applying The Moon Trine Neptune 1°10' Separating The Moon Trine The North Node 3°45' Separating The Moon Sextile The Midheaven 0°17' Applying The Sun Semisquare Jupiter 0°50' Applying The Sun Sextile Saturn 1°52' Applying The Sun Trine Uranus 7°30' Applying Mercury Square Uranus 2°21' Separating Mercury Opposition Pluto 3°49' Applying Venus Sextile -
1 Name 2 Zeus in Myth
Zeus For other uses, see Zeus (disambiguation). Zeus (English pronunciation: /ˈzjuːs/[3] ZEWS); Ancient Greek Ζεύς Zeús, pronounced [zdeǔ̯s] in Classical Attic; Modern Greek: Δίας Días pronounced [ˈði.as]) is the god of sky and thunder and the ruler of the Olympians of Mount Olympus. The name Zeus is cognate with the first element of Roman Jupiter, and Zeus and Jupiter became closely identified with each other. Zeus is the child of Cronus and Rhea, and the youngest of his siblings. In most traditions he is married to Hera, although, at the oracle of Dodona, his consort The Chariot of Zeus, from an 1879 Stories from the Greek is Dione: according to the Iliad, he is the father of Tragedians by Alfred Church. Aphrodite by Dione.[4] He is known for his erotic es- capades. These resulted in many godly and heroic offspring, including Athena, Apollo, Artemis, Hermes, the Proto-Indo-European god of the daytime sky, also [10][11] Persephone (by Demeter), Dionysus, Perseus, Heracles, called *Dyeus ph2tēr (“Sky Father”). The god is Helen of Troy, Minos, and the Muses (by Mnemosyne); known under this name in the Rigveda (Vedic San- by Hera, he is usually said to have fathered Ares, Hebe skrit Dyaus/Dyaus Pita), Latin (compare Jupiter, from and Hephaestus.[5] Iuppiter, deriving from the Proto-Indo-European voca- [12] tive *dyeu-ph2tēr), deriving from the root *dyeu- As Walter Burkert points out in his book, Greek Religion, (“to shine”, and in its many derivatives, “sky, heaven, “Even the gods who are not his natural children address [10] [6] god”). -
April 14 2018 7:00Pm at the April 2018 Herrett Center for Arts & Science College of Southern Idaho
Snake River Skies The Newsletter of the Magic Valley Astronomical Society www.mvastro.org Membership Meeting President’s Message Tim Frazier Saturday, April 14th 2018 April 2018 7:00pm at the Herrett Center for Arts & Science College of Southern Idaho. It really is beginning to feel like spring. The weather is more moderate and there will be, hopefully, clearer skies. (I write this with some trepidation as I don’t want to jinx Public Star Party Follows at the it in a manner similar to buying new equipment will ensure at least two weeks of Centennial Observatory cloudy weather.) Along with the season comes some great spring viewing. Leo is high overhead in the early evening with its compliment of galaxies as is Coma Club Officers Berenices and Virgo with that dense cluster of extragalactic objects. Tim Frazier, President One of my first forays into the Coma-Virgo cluster was in the early 1960’s with my [email protected] new 4 ¼ inch f/10 reflector and my first star chart, the epoch 1960 version of Norton’s Star Atlas. I figured from the maps I couldn’t miss seeing something since Robert Mayer, Vice President there were so many so closely packed. That became the real problem as they all [email protected] appeared as fuzzy spots and the maps were not detailed enough to distinguish one galaxy from another. I still have that atlas as it was a precious Christmas gift from Gary Leavitt, Secretary my grandparents but now I use better maps, larger scopes and GOTO to make sure [email protected] it is M84 or M86. -
The Fixed Stars Report Frederic Chopin
The Fixed Stars Report by Tara Cochrane for Frederic Chopin March 1, 1810 6:00 PM Warsaw, Poland Calculated for: Local Mean Time, Time Zone 0 hours West Latitude: 52 N 15 Longitude: 21 E 00 Your Company Name 1234 N. Your Address City, State 123456 Phone: 1-555-555-5555 [email protected] Introduction Report and Text Copyright 2009 Cosmic Patterns Software, Inc. The contents of this report are protected by Copyright law. By purchasing this report you agree to comply with this Copyright. This report interprets conjunctions of nearly every fixed star that has been given an astrological name to the planets, Asc, MC, 7th house cusp, and 4th cusp. Each interpretation given in this report is based on extensive research on the historical astrological meanings and myths associated with the fixed stars. A list of notable people who have the same conjunction aspect as you do is also given. This comprehensive analysis of the influence of the fixed stars combined with a list of notable people who also have this aspect provides you with extensive information, and hopefully astrologers who use this report can use this information to develop an even more refined and clearer understanding of the meaning of every fixed stars. Interpretations of the Fixed Stars Moon conjunct Dheneb, Orb: 0 deg 55 min Bold, willful, courageous, combative, astute, focused and unyielding characteristics may be indicated. Ascension to a position of leadership and renown is possible. There may be a great deal of personal charisma and emotional intensity, as well as an inclination towards obsession.